Rinstrum R427 Manual de usuario
Reference Manual Rev 1.13
004R-646-113 Page 1
Table of Contents
1.INTRODUCTION ...................................................................................................................... 6
1.1.Overview ....................................................................................................................... 6
1.2.The Manuals Set ........................................................................................................... 7
1.3.Document Conventions ................................................................................................. 7
1.4.Software Comparison K404, K405 and K422 ............................................................... 7
2.SPECIFICATIONS .................................................................................................................... 8
3.INSTALLATION ....................................................................................................................... 9
3.1.Introduction ................................................................................................................... 9
3.2.General Warnings ......................................................................................................... 9
3.3.Electrical Safety ............................................................................................................ 9
3.4.Cleaning ........................................................................................................................ 9
3.5.Panel Mount Template .................................................................................................. 9
3.6.Cable Connections ........................................................................................................ 9
3.7.DC Power (DC PWR + , DC PWR –) .......................................................................... 10
3.8.Load Cell Connection .................................................................................................. 10
3.8.1.Load Cell Signals and Scale Build .............................................................. 10
3.8.2.4-Wire Connection ...................................................................................... 10
3.8.3.6-Wire Connection ...................................................................................... 11
3.9.Auxiliary Connections .................................................................................................. 11
3.9.1.RS-232 Serial .............................................................................................. 12
3.9.2.RS-485 Serial .............................................................................................. 14
3.10.Optical Communications ............................................................................................. 14
3.11.Connecting Shields ..................................................................................................... 15
3.11.1.Cable Shield Connection and Earthing ....................................................... 16
3.12.Regulatory Sealing Requirements .............................................................................. 16
3.13.Accessory Module connection .................................................................................... 17
4.SETUP MENUS ...................................................................................................................... 18
4.1.Accessing Setup Menus .............................................................................................. 18
4.1.1.Setup Display Prompts ............................................................................... 19
4.2.Exiting Full or Safe Setup ............................................................................................ 19
4.3.Menu Navigation ......................................................................................................... 19
4.4.Changing Data ............................................................................................................ 20
4.5.Numeric Entry ............................................................................................................. 20
4.6.Selections and Options ............................................................................................... 21
4.7.Strings ......................................................................................................................... 21
4.7.1.Normal String Editing .................................................................................. 21
4.7.2.Numerical String Editing ............................................................................. 22
4.7.3.ASCII String Editing .................................................................................... 22
4.8.IP Addresses ............................................................................................................... 22
5.BASIC OPERATION .............................................................................................................. 23
5.1.User Interface Display and Controls ........................................................................... 23
5.1.1.Overview ..................................................................................................... 23
5.1.2.Display ........................................................................................................ 24
5.1.3.Primary Annunciators .................................................................................. 24
5.1.4.Keypad ........................................................................................................ 25
5.2.Operation Keys ........................................................................................................... 26
5.2.1.Turn Instrument ON - Short press <Power> ............................................... 26
5.2.2.Turn Instrument OFF - Long press <Power> ..............................................
26
5.2.3.Additional Power Information ...................................................................... 26
5.3.Zero Key ...................................................................................................................... 26
5.4.Tare Key ...................................................................................................................... 27
5.4.1.Setting Preset Tare on a Permanent Truck ID ............................................ 27
5.4.2.Setting Preset Tare on a Temporary Truck ID ............................................ 27
5.4.3.Gross/Net Key ............................................................................................. 28
5.5.Truck Key .................................................................................................................... 28
5.5.1.Truck Key to enter an ID ............................................................................. 28
5.5.2.Truck Key to select a Truck ID .................................................................... 28
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5.6.Print Key ...................................................................................................................... 29
5.6.1.PRINT (K404) ............................................................................................. 29
5.6.2.PRINT (K405 and K422) ............................................................................. 29
5.7.Function Key 3 - Programmable ................................................................................. 29
5.8.Clock ........................................................................................................................... 31
5.9.Report ......................................................................................................................... 31
5.10.Total ............................................................................................................................ 32
5.11.User ID ........................................................................................................................ 32
5.12.Target .......................................................................................................................... 33
5.13.Lock ............................................................................................................................. 33
5.14.Alibi ............................................................................................................................. 34
5.14.1.Switching to Alibi Mode ............................................................................... 34
5.14.2.Returning from Alibi Mode .......................................................................... 34
5.14.3.Viewing DSD records in Alibi mode ............................................................ 34
5.15.Acc .............................................................................................................................. 35
5.16.Stability Considerations ............................................................................................... 35
6.SELECT/ADD/DELETE TRUCK IDS ..................................................................................... 36
6.1.1.Select a Truck ID - Short Press of Up and Down keys ............................... 36
6.1.2.Add a Permanent Truck ID - Long Press of the Up Key (Add) ................... 36
6.1.3.Add a Temporary Truck ID – Truck Key ..................................................... 36
6.1.4.Delete a Truck ID - Long Press of the Down Key (Del) .............................. 37
6.1.5.Edit a Truck ID - Long Press of the OK Key (Edit) ...................................... 37
7.SPECIAL FUNCTIONS AND EXTERNAL KEYS .................................................................. 38
7.1.Overview ..................................................................................................................... 38
7.2.NONE .......................................................................................................................... 38
7.3.SINGLE ....................................................................................................................... 38
7.4.TEST ........................................................................................................................... 38
7.5.UNITS ......................................................................................................................... 39
7.6.HOLD .......................................................................................................................... 40
7.7.HI.RES ........................................................................................................................ 40
7.8.SC.EXIT ......................................................................................................................
41
8.TRUCK WEIGHING OPERATION-STATIC (K404) ............................................................... 42
8.1.Static Truck Weighing Summary ................................................................................. 42
8.1.1.Weighing in ................................................................................................. 42
8.1.2.Weighing out with preset tare ..................................................................... 42
8.1.3.Weighing out with first weight ..................................................................... 42
8.2.Print Current Weight of Truck ...................................................................................... 43
8.3.Single Pass - Permanent Truck ID with Preset Tare ................................................... 43
8.4.Single Pass - Temporary ID (Operator Entered) with a Preset Tare ........................... 44
8.5.Single Pass – Automatic Temporary ID Allocated with a Preset Tare ........................ 44
8.6.Two Pass .................................................................................................................... 45
8.7.Two Pass – Automatic Temporary ID Allocated .......................................................... 45
9.TRUCK WEIGHING OPERATION-STATIC AXLE (K405) ..................................................... 46
9.1.Print Current Weight of Truck ...................................................................................... 46
9.2.Single Pass - Permanent Truck ID with Preset Tare ................................................... 46
9.3.Single Pass - Temporary ID (Operator Entered) with a Preset Tare ........................... 47
9.4.Single Pass – Automatic Temporary ID Allocated with a Preset Tare ........................ 47
9.5.Two Pass .................................................................................................................... 48
9.6.Two Pass – Automatic Temporary ID Allocated .......................................................... 48
10.TRUCK WEIGHING OPERATION-DYNAMIC AXLE (K422) ................................................. 49
10.1.Print Current Weight of Truck ...................................................................................... 49
10.2.Single Pass - Permanent Truck ID with Preset Tare ................................................... 49
10.3.Single Pass - Temporary ID (Operator Entered) with a Preset Tare ........................... 50
10.4.Single Pass – Automatic Temporary ID Allocated with a Preset Tare ........................ 50
10.5.Two Pass .................................................................................................................... 51
10.6.Two Pass – Automatic Temporary ID Allocated .......................................................... 51
11.CONFIGURATION ................................................................................................................. 52
11.1.General Setup Information .......................................................................................... 52
11.2.Correct Loadcell Selection .......................................................................................... 52
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004R-646-113 Page 3
11.3.Filtering Techniques .................................................................................................... 52
11.4.Industrial vs Trade Modes ........................................................................................... 53
11.5.Calibration Counter ..................................................................................................... 53
11.6.Passcodes ................................................................................................................... 53
11.6.1.Full Setup Passcode ................................................................................... 54
11.6.2.Safe Setup Passcode ................................................................................. 54
11.6.3.Operator Passcode ..................................................................................... 54
11.6.4.Setup Lock-Out ........................................................................................... 54
12.SETUP MENUS ...................................................................................................................... 55
12.1.GEN.OPT (General options) ....................................................................................... 55
12.1.1.LANG (Operator language) ......................................................................... 55
12.1.2.DATE.F (Date format) ................................................................................. 55
12.1.3.PCODE (Security passcodes) ..................................................................... 55
12.1.4.KEY.LOC (Key Function Access Control) ................................................... 56
12.1.5.DISP (Display options) ................................................................................ 56
12.1.6.ID.NAME (User Defined Strings) ................................................................ 57
12.1.7.POWER (Power options) ............................................................................ 57
12.1.8.STR.EDT (String Edit Mode) ....................................................................... 57
12.1.9.USR.DEF (Set all non-calibration settings to defaults) ............................... 57
12.2.H.WARE (Hardware Configuration & Test) ................................................................. 59
12.2.1.LC.HW ........................................................................................................ 59
12.2.2.SER1.HW, SER2.HW ................................................................................. 60
12.2.3.ETH.HW ...................................................................................................... 61
12.2.4.ETH.DEF (Set the M4221 Ethernet module to defaults) ............................. 61
12.2.5.IO.HW ......................................................................................................... 62
12.2.6.DSD.HW ..................................................................................................... 62
12.3.SCALE (Loadcell options and calibration) ................................................................... 63
12.3.1.BUILD (Scale parameters) .......................................................................... 63
12.3.2.OPTION (Scale options) ............................................................................. 64
12.3.3.CAL (Scale calibration) ............................................................................... 65
12.3.4.QA (QA alarm) ............................................................................................ 65
12.4.FUNC (Special functions) ............................................................................................ 66
12.4.1.NUM (Number of special functions) ............................................................
66
12.4.2.SFn: TYPE (Function Types) ...................................................................... 66
12.4.3.SFn: KEY (Function Key / Remote Input) ................................................... 67
12.4.4.SFn: PRINT (Printing Functions) ................................................................ 67
12.4.5.SFn: SINGLE (Single Serial Output Functions) .......................................... 68
12.4.6.SFn: BLANK (Blanking Functions) .............................................................. 68
12.4.7.SFn: UNITS (Unit Switching Functions) ...................................................... 69
12.4.8.SFn: HOLD ................................................................................................. 69
12.4.9.SFn: REM.KEY (Remote Key Functions) ................................................... 70
12.4.10.SFn: REPORT (Report Printing Functions) ................................................ 70
12.4.11.SFn: HI.RES (High Resolution) ................................................................... 70
12.4.12.SFn: SC.EXIT (Scale Exit) .......................................................................... 71
12.4.13.SFn: TRUCK (Truck selection) ................................................................... 71
12.5.SER.NET ..................................................................................................................... 72
12.6.SER.AUT (Automatic transmit) ................................................................................... 73
12.6.1.NUM (Number of Automatic Transmissions) .............................................. 73
12.6.2.AUTO.n (Automatic Output Configuration) ................................................. 73
12.7.PRINT (Printouts) ........................................................................................................ 74
12.7.1.NUM (Number of printouts) ......................................................................... 74
12.7.2.HEADER (Print header) .............................................................................. 74
12.7.3.FOOTER (Print footer) ................................................................................ 74
12.7.4.PAGE (Print page options ........................................................................... 74
12.7.5.SPACE (Print blank space options) ............................................................ 75
12.7.6.PRINT.n … (Printout options) ..................................................................... 75
12.8.SETP (Setpoints) ........................................................................................................ 77
12.8.1.NUM (Number of setpoints) ........................................................................ 77
12.8.2.SETP1 … SETP8(K422 only)/SETP16(K404 and K405) (Setpoint options) ............... 77
12.9.AXLE (K405) ............................................................................................................... 80
12.9.1.MIN.WGT (Minimum weight) ....................................................................... 80
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12.9.2.IDLE (Idle time) ........................................................................................... 80
12.9.3.MODE (Capture mode) ............................................................................... 80
12.10.AXLE (K422) ............................................................................................................... 81
12.10.1.MIN.WGT (Minimum weight) ....................................................................... 81
12.10.2.HYS (Hysteresis) ........................................................................................ 81
12.10.3.WINDOW (Window size) ............................................................................. 81
12.10.4.MIN.TIM (Minimum time) ............................................................................ 81
12.10.5.IDLE (Idle time) ........................................................................................... 81
12.10.6.OFFSET (Window offset) ............................................................................ 81
12.10.7.ED (Dynamic reading count-by) .................................................................. 82
12.10.8.MODE (Capture mode) ............................................................................... 82
12.10.9.IN.STRT (Capture start input) ..................................................................... 82
12.10.10.IN.MID (Mid capture input) .......................................................................... 82
12.10.11.IN.END (End capture input) ........................................................................ 82
12.10.12.GROUP (Axle group time) .......................................................................... 82
12.10.13.DYN.SCL (Dynamic reading scaling factor) ................................................ 83
12.10.14.I/LOCK (Truck weighing interlock) ..............................................................
83
12.10.15.IL.TIME (Truck weighing interlock time) ...................................................... 83
12.10.16.USE IO ........................................................................................................ 83
12.11.End (Save and exit) ..................................................................................................... 83
13.CALIBRATION ....................................................................................................................... 84
13.1.Performing a Digital Calibration with Test Weights ..................................................... 84
13.1.1.ZERO (Zero Calibration Routine) ................................................................ 85
13.1.2.SPAN (Span Calibration Routine) ............................................................... 86
13.2.Performing a Calibration with Direct mV/V Entry ........................................................ 86
13.2.1.DIR.ZER (Direct Zero Calibration Entry) ..................................................... 86
13.2.2.DIR.SPN (Direct Span Calibration Entry) .................................................... 86
13.3.Using Linearisation ...................................................................................................... 88
13.3.1.ED.LIN (Edit Linearisation Points) .............................................................. 89
13.3.2.CLR.LIN (Clear Linearisation) ..................................................................... 89
13.4.Calibration Errors ........................................................................................................ 90
14.NETWORK COMMUNICATIONS ........................................................................................... 91
14.1.Introduction ................................................................................................................. 91
14.2.Network Protocol RINCMD ......................................................................................... 91
14.2.1.Basic Message Format ............................................................................... 91
14.2.2.Termination ................................................................................................. 92
14.2.3.Error Handling ............................................................................................. 93
14.2.4.Ring Network Enhancement ....................................................................... 93
14.2.5.Calibrating an instrument over a network ................................................... 93
14.3.Network Protocol SIMPLE ........................................................................................... 94
14.4.Network Protocol BARCODE (K404 and K405 only) .................................................. 95
14.5.Network Protocol LUA BUFFER (K422 only) .............................................................. 95
14.6.rinCMD Examples ....................................................................................................... 96
15.AUTOMATIC WEIGHT OUTPUT ........................................................................................... 98
15.1.Overview ..................................................................................................................... 98
15.2.Auto Weight Format String .......................................................................................... 98
16.PRINTING ............................................................................................................................. 100
16.1.Overview ................................................................................................................... 100
16.2.Print ID ......................................................................................................................
100
16.3.Docket printouts ........................................................................................................ 100
16.3.1.Docket Formats ......................................................................................... 100
16.3.2.Custom Docket Events ............................................................................. 103
16.4.Report printouts ......................................................................................................... 104
16.5.Custom Printing ......................................................................................................... 104
16.5.1.Page Tokens ............................................................................................. 106
17.SETPOINTS ......................................................................................................................... 107
17.1.Overview ................................................................................................................... 107
17.2.Outputs ...................................................................................................................... 107
17.3.Common Settings ...................................................................................................... 107
17.4.Weigh in (OVER) Setpoints and Weigh Out (UNDER) Setpoints ............................. 108
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17.4.1.Additional Settings .................................................................................... 109
17.5.Status Based Setpoint Types .................................................................................... 109
17.6.Logic Setpoint Types ................................................................................................. 109
17.7.Scale Entry/Exit Setpoint Types ................................................................................ 112
18.APPENDIX 1: DIMENSIONS ............................................................................................... 113
18.1.Trade Label ............................................................................................................... 115
18.2.Lead Seals ................................................................................................................ 115
18.2.1.Destructible Sticker Seals ......................................................................... 115
18.2.2.Electronic Seal .......................................................................................... 115
19.APPENDIX 2: PRINT AND AUTOMATIC TRANSMISSION TOKENS ................................ 116
19.1.ASCII codes .............................................................................................................. 116
19.2.Use of Characters in the Extended ASCII table ........................................................ 116
19.3.Tokens ...................................................................................................................... 117
19.3.1.Non-paged generic tokens ........................................................................ 117
19.3.2.Page tokens .............................................................................................. 117
19.3.3.Page 0, 1, 2, 3, 7 tokens: Weight Information .......................................... 118
19.3.4.Page 4, 5, 6 tokens: Product Information: .................................................
118
19.3.5.Page 8 tokens: Miscellaneous weight data ............................................... 119
19.3.6.Page 10 tokens: Default print strings: ...................................................... 120
19.3.7.Format tokens ........................................................................................... 121
20.APPENDIX 3: COMMUNICATIONS REGISTERS ............................................................... 123
21.APPENDIX 4: SETUP MENU QUICK REFERENCE ........................................................... 132
22.APPENDIX 5: ERROR MESSAGES .................................................................................... 135
22.1.Overview ................................................................................................................... 135
22.2.Weighing Errors ........................................................................................................ 135
22.3.Axle Weighing Errors (K405 and K422) .................................................................... 135
22.4.Setup Errors .............................................................................................................. 136
22.5.Diagnostic Errors ....................................................................................................... 136
23.APPENDIX 6: M4221 ETHERNET MODULE ...................................................................... 138
23.1.Overview ................................................................................................................... 138
23.2.Network Configuration ............................................................................................... 138
23.3.Viewing the Current Configuration ............................................................................ 138
23.4.Services .................................................................................................................... 138
23.4.1.TCP Sockets ............................................................................................. 138
23.4.2.Web Interface ............................................................................................ 138
24.APPENDIX 7: M4501 DSD MODULE .................................................................................. 139
24.1.Overview ................................................................................................................... 139
24.2.Writing records .......................................................................................................... 139
24.3.Reading records ........................................................................................................ 139
25.GLOSSARY .......................................................................................................................... 140
25.1.Glossary of Terms ..................................................................................................... 140
25.2.List of Figures ............................................................................................................ 141
25.3.List of Tables ............................................................................................................. 141
26.INDEX ................................................................................................................................... 142
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1. Introduction
1.1. Overview
This precision digital indicator uses the latest Sigma-Delta A/D technology to ensure
fast and accurate weight readings. The setup and calibration of the instrument are
digital, with a non-volatile security store for all setup parameters.
It may be operated from either a DC power source (12VDC to 24VDC) or AC power
(optional 110 – 240 VAC). There is a soft power on/off function that retains memory
of its state. Once an instrument is turned on it will automatically start up again if the
external power is interrupted.
Optical communications is fitted standard and allows for a temporary isolated
communications link to be established with a PC. Software upgrades, the use of
computerised setup and calibration can then be done using a PC. Refer to Optical
Communications page 14 for more information.
Figure 1: Weight Indicator
The instrument provides zero, tare, gross/net, truck and print on the fixed function
keys and supports special functions (eg. printing, unit switching, etc.), via user
definable function key and external inputs. Operator functions (clock, report etc)
and editing functions are provided on the alpha/numeric key pad. It is equipped with
an NVRAM store to ensure day-to-day operating settings (eg. ZERO, TARE,
CLOCK, etc.) are retained when power is removed.
The RS-232 communications port can be used for printer driving, connection to a
remote display or PC. The transmit only RS-485 communications port can be used
for remote displays. There is a built-in clock for date-stamping printed outputs.
The instrument can support different software applications depending on the
functionality required.
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004R-646-113 Page 7
1.2. The Manuals Set
This manual is part of a set of manuals covering the setup and operation of the
instrument. The set includes the following:
Reference Manual - Contains detailed information on calibration and setup. This
manual is intended for use by Scale Technicians who are installing the instrument.
Operator Manual - Aimed at the operator of the instrument, and covers the day-to-
day operation of the instrument.
Quick Start Manual - Intended for Scale Technicians who are familiar with the
instrument and simply need a quick reference to menu options and connection
diagrams, etc.
1.3. Document Conventions
The following document conventions (typographical) are used throughout this
Reference Manual.
Bold Text Bold text denotes words and phrases to note.
<Key> <Key> denotes a Keypad key.
Note: In the Specifications section the < symbol means less than
and the > symbol means greater than.
^ This symbol denotes one space when describing serial output
formats.
Items marked with indicate that the setting is available only in Full
Setup and is trade critical. When trade critical settings are changed
the calibration counter is incremented.
Table 1: Document Conventions
1.4. Software Comparison K404, K405 and K422
The table below only lists the features that vary between each version of the K404,
K405, and K422 software.
Feature K404 K405 K422
Static Axle weighing
Dynamic Axle weighing
Print key Print the
weight
Use print key to skip
the idle time
Use print key to
skip the idle time
Automatic print event Drive over stopping
for each axle –
reading will print on
no motion
Drive completely
over scale
Table 2: Software comparison
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2. Specifications
Performance
Resolution Up to 100,000 divisions, minimum of 0.25V/division
Zero Cancellation +/- 2.0mV/V
Span Adjustment 0.1mV/V to 3.0mV/V
Stability/Drift Zero: < 0.1V/C (+ 8ppm of deadload max)
Span < 8 ppm/C, Linearity < 20ppm, Noise < 0.2Vp-p
Excitation 7.4 volts for up to 16 x 350 or 32 x 700 ohm load cells (4-wire or
6-wire plus shield)
Maximum total load cell resistance: 1,000 ohms
A/D Type 24bit Sigma Delta with ±8,388,608 internal counts
Operating
Environment Temperature: –10 to +50C ambient
Humidity: <90% non-condensing
Storage: –20 to +50C ambient
ABS - IP65 when panel mounted or with rear boot
Stainless Steel – IP66 when panel mounted or with rear boot
Digital
Display LCD with 4 alpha-numeric displays and LED backlighting:
Primary display: 6 x 28.4mm high digits with units and
annunciators
2
nd display: 9 x 17.6 mm digits with units
3
rd display: 8 x 6. 1mm digits
4
th display: 4 x 7.6 mm digits
Setup and
Calibration
Full digital with visual prompting in plain messages
Digital Filter Sliding window average from 0.1 to 30.0 seconds
Zero Range Adjustable from +/- 2% to +/- 20% of full capacity
Power Input
Standard Power
Input
12 to 24VDC (15 VA max) - ON/OFF key with memory feature
Variants AC
M4101
Input: 110/240VAC 50/60Hz
Output: 12VDC 15VA
Features
Optical Data
Communications
Magnetically coupled optical communications support. Optional
conversion cable connects directly to a standard RS-232 port.
Correction 10 point linearity correction
Serial Outputs RS-232 serial port for remote display, network or printer supports.
RS-485 transmit only for remote display
Transmission rate: 1200, 2400, 4800, 9600, 19200 or 57600 baud
Assignable function
key
Printing, unit switching, manual hold, and totalising
Battery Backed
Clock Calendar
Battery life 10 years minimum
Approvals FCC, CE, C-tick
Check trade approvals
Table 3: Instrument specifications
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004R-646-113 Page 9
3. Installation
3.1. Introduction
The following steps are required to set up the indicator.
Inspect indicator to ensure good condition.
Use connection diagrams to wire up load cell, power and auxiliary cables as
required.
Insert any accessory modules that are being used.
Use the drill hole template provided for hole locations.
Connect Power to indicator and press <POWER> key to turn the instrument On.
Refer to the Setup Menus section on page 55 for information on configuring the
instrument.
To turn instrument OFF press and hold <POWER> key for three seconds (until
display blanks).
3.2. General Warnings
Indicator not to be subject to shock, excessive vibration or extremes of temperature
(before or after installation).
Inputs are protected against electrical interference, but excessive levels of electro-
magnetic radiation and RFI may affect the accuracy and stability.
The instrument should be installed away from any sources of excessive electrical
noise.
The load cell cable is particularly sensitive to electrical noise and should be located
well away from any power or switching circuits.
For full EMC or for RFI immunity, termination of cable shields and correct earthing
of the instrument is essential.
3.3. Electrical Safety
For your protection all mains electrical hardware must be rated for environmental
conditions of use.
Pluggable equipment must be installed near an easily accessible power socket
outlet.
To avoid the possibility of electric shock or damage to the instrument, always switch
off or isolate the instrument from the power supply before maintenance is carried
out.
3.4. Cleaning
To maintain the instrument, never use harsh abrasive cleaners or solvents. Wipe
the instrument with a soft cloth slightly dampened with warm soapy water.
3.5. Panel Mount Template
The panel mount template is supplied with the instrument. It shows the location of
the rectangular cut-out and the four mounting screws.
3.6. Cable Connections
All cable connections are made to the rear of the instrument using pluggable screw
terminals. It is not necessary to tin the ends of the wires with solder or to add crimp
ferrules to the wires, however, these techniques are compatible with the terminals.
Reference Manual Rev 1.13
Page 10 004R-646-113
Figure 2: Cable Connections
3.7. DC Power (DC PWR + , DC PWR –)
The DC supply need not be regulated, provided that it is free of excessive electrical
noise and sudden transients. The instrument can be operated from a high quality
plug-pack as long as there is sufficient capacity to drive both it and the load cells.
3.8. Load Cell Connection
3.8.1. Load Cell Signals and Scale Build
Very low output scale bases may be used but may induce some instability in the
weight readings when used with higher resolutions. Generally speaking, the higher
the output, or the lower the number of divisions, the greater the display stability and
accuracy.
The instrument can display the milli-Volt-per-Volt reading which can be used to
check scale base signal output levels. For more information, refer to Scale Test
Display page 59.
The instrument may be connected for either 4-wire or 6–wire operation. Use 4-wire
when external SENSE connections are not available.
3.8.2. 4-Wire Connection
The minimum connectivity requirements are the connection of four wires (i.e. ±
Excitation and ± Signal). Internally the instrument has a precision analog switch
that can be used to connect the Sense+ and Sense– lines directly to the
Excitation+ and Excitation– lines.
Any addition to the load cell manufacturer's cable length using 4-wire connection is
only recommended for short cable runs. Where long additions to cable lengths are
needed, a 6-wire extension is required.
The BUILD: CABLE option must be set to 4-WIRE to allow for 4-wire connection.
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