PR electronics 2255 Manual de usuario

2255

f/I - f/f converter

No. 2255V102-UK

From ser. no. 980431001

1542

PR electronics A/S tilbyder et bredt program af analoge og digitale

signalbehandlingsmoduler til industriel automation. Programmet

består af Isolatorer, Displays, Ex-barrierer, Temperaturtransmittere,

Universaltransmittere mﬂ. Vi har modulerne, du kan stole på i selv

barske miljøer med elektrisk støj, vibrationer og temperaturudsving,

og alle produkter opfylder de strengeste internationale standarder.

Vores motto »Signals the Best« er indbegrebet af denne ﬁlosoﬁ – og

din garanti for kvalitet.

PR electronics A/S oers a wide range of analog and digital signal

conditioning devices for industrial automation. The product range

includes Isolators, Displays, Ex Interfaces, Temperature Transmitters,

and Multifunctional Devices. You can trust our products in the

most extreme environments with electrical noise, vibrations and

temperature ﬂuctuations, and all products comply with the most

exacting international standards. »Signals the Best« is the epitome

of our philosophy – and your guarantee for quality.

PR electronics A/S ore une large gamme de produits pour le

traitement des signaux analogiques et numériques dans tous

les domaines industriels. La gamme de produits s’étend des

transmetteurs de température aux acheurs, des isolateurs aux

interfaces SI, jusqu’aux modules universels. Vous pouvez compter

sur nos produits même dans les conditions d’utilisation sévères,

p.ex. bruit électrique, vibrations et ﬂuctuations de température.

Tous nos produits sont conformes aux normes internationales les

plus strictes. Notre devise »SIGNALS the BEST« c’est notre ligne

de conduite - et pour vous l’assurance de la meilleure qualité.

PR electronics A/S verfügt über ein breites Produktprogramm

an analogen und digitalen Signalverarbeitungsgeräte für die in-

dustrielle Automatisierung. Dieses Programm umfasst Displays,

Temperaturtransmitter, Ex- und galvanische Signaltrenner, und

Universalgeräte. Sie können unsere Geräte auch unter extremen

Einsatzbedingungen wie elektrisches Rauschen, Erschütterungen

und Temperaturschwingungen vertrauen, und alle Produkte von

PR electronics werden in Übereinstimmung mit den strengsten

internationalen Normen produziert. »Signals the Best« ist Ihre

Garantie für Qualität!

2255V102-UK 1

f/I - f/f CONVERTER

TYPE 2255

CONTENTS

Warning....................................................................................................... 2

Symbol identification ............................................................................ 3

Safety instructions................................................................................. 3

How to dismantle system 2200....................................................... 5

General........................................................................................................ 6

Technical characteristics...................................................................... 6

Input............................................................................................................. 6

Auxiliary supplies ................................................................................... 6

Output(s).................................................................................................... 7

Status indication ..................................................................................... 7

Electrical specifications........................................................................ 8

Order ............................................................................................................ 11

Analogue output programming by way of jumpers.................. 11

Block diagram........................................................................................... 12

Programming / operating the function keys ............................... 13

Routing diagram: f/I converter with analogue and

digital output....................................................................................... 14

Setting of f/i converter with analogue and digital output.... 16

Routing diagram: f/f converter for pulse ...................................... 20

Setting of f/f converter to pulse division / multiplication..... 22

Routing diagram: Frequency generator......................................... 24

Setting of frequency generator........................................................ 26

2 2255V102-UK

WARNING

This device is designed for connection to hazardous electric

voltages. Ignoring this warning can result in severe personal injury

or mechanical damage.

To avoid the risk of electric shock and fire, the safety instructions

of this manual must be observed and the guidelines followed. The

electrical specifications must not be exceeded, and the device

must only be applied as described in the following.

Prior to the commissioning of the device, this manual must be

examined carefully.

Only qualified personnel (technicians) should install this device.

If the equipment is used in a manner not specified by the

manufacturer, the protection provided by the equipment may be

impaired.

WARNING

Until the device is fixed, do not connect hazardous voltages to the

device. The following operations should only be carried out on a

disconnected device and under ESD safe conditions:

Dismantlement of the device for setting of dipswitches

and jumpers.

General mounting, connection and disconnection of wires.

Troubleshooting the device.

Repair of the device and replacement of circuit breakers must

be done by PR electronics A/S only.

WARNING

To keep the safety distances, devices with two built-in relays must

not be connected to both hazardous and non-hazardous voltages

on the same device’s relay contacts.

SYSTEM 2200 must be mounted in socket type S3B Releco (order

no 7023).

HAZARDOUS

VOLTAGE

INSTAL-

LATION

GENERAL

2255V102-UK 3

SYMBOL IDENTIFICATION

Triangle with an exclamation mark: Warning / demand.

Potentially lethal situations.

The CE mark proves the compliance of the device with the requirements

of the directives.

The double insulation symbol shows that the device is protected by double

or reinforced insulation.

SAFETY INSTRUCTIONS

DEFINITIONS

Hazardous voltages have been defined as the ranges 75...1500 Volt DC, and

50...1000 Volt AC.

Technicians are qualified persons educated or trained to mount, operate, and also

troubleshoot technically correct and in accordance with safety regulations.

Operators, being familiar with the contents of this manual, adjust and operate the

knobs or potentiometers during normal operation.

RECEIPT AND UNPACKING

Unpack the device without damaging it. The packing should always follow the

device until this has been permanently mounted. Check at the receipt of the device

whether the type corresponds to the one ordered.

ENVIRONMENT

Avoid direct sunlight, dust, high temperatures, mechanical vibrations and shock, as

well as rain and heavy moisture. If necessary, heating in excess of the stated limits

for ambient temperatures should be avoided by way of ventilation. All devices fall

under Installation Category II, Pollution Degree 1, and Insulation Class II.

MOUNTING

Only technicians who are familiar with the technical terms, warnings, and

instructions in the manual and who are able to follow these should connect the

device.

4 2255V102-UK

Should there be any doubt as to the correct handling of the device, please contact

your local distributor or, alternatively

PR electronics A/S

www.prelectronics.com

Mounting and connection of the device should comply with national legislation for

mounting of electric materials, i.a. wire cross section, protective fuse, and location.

Descriptions of Input / Output and supply connections are shown in the block

diagram and side label.

The following apply to fixed hazardous voltages-connected devices:

The max. size of the protective fuse is 10 A and, together with a power

switch, it should be easily accessible and close to the device. The power

switch should be marked with a label telling it will switch off the voltage

to the device.

CALIBRATION AND ADJUSTMENT

During calibration and adjustment, the measuring and connection of external

voltages must be carried out according to the specifications of this manual.

The technician must use tools and instruments that are safe to use.

NORMAL OPERATION

Operators are only allowed to adjust and operate devices that are safely fixed in

panels, etc., thus avoiding the danger of personal injury and damage. This means

there is no electrical shock hazard, and the device is easily accessible.

CLEANING

When disconnected, the device may be cleaned with a cloth moistened with

distilled water.

LIABILITY

To the extent the instructions in this manual are not strictly observed, the custom-

er cannot advance a demand against PR electronics A/S that would otherwise exist

according to the concluded sales agreement.

2255V102-UK 5

HOW TO DISMANTLE SYSTEM 2200

The back panel of the device is detached from the housing by way of a screw-driver

as shown in picture 1

On a device with knobs, these must be removed before the PCB can be taken out

as shown in picture 2.

After this, the back panel can be pulled out together with the PCB, but please

notice the position of the PCB as there is a number of different positions in the

house. Do not pull the wires unnecessarily, instead pull the PCB, see picture 3.

Switches and jumpers can now be moved. When assembling the back plate and

housing, please make sure no wires are stuck.

Picture 1: Dismantlement of back plate

and housing.

Picture 2: Removal of knobs.

Picture 3: Removal of PCBs ftor adjustment of DIP-switches

and replacement of jumpers.

6 2255V102-UK

f/I - f/f CONVERTER 2255

• Programmable f/I converter

• Programmable decimal divider / decimal multiplier

• Programmable frequency generator

• Relay output as option

• Supply voltage 24 VDC

General

The 2255 f/I - f/f converter is configured to the requested function by means of a

menu-driven dialogue with keys and display in the front. Typical signalling device

may be pulse generators e.g. flow meters, tacho-generators or inductive sensors.

The f/I function is used for frequency to current / voltage conversion within the

frequency range from 0.001 Hz to 20 kHz and for speed control with the digital

output as frequency watch.

The f/f function is used for division or multiplication of pulses and as a buffer for

fast pulse trains.

Max. input frequency 20 kHz.

Max. output frequency 1 kHz.

The frequency generator function is for instance used as a time base or a

clock generator. Max. output frequency 20 kHz. The 2255 can be delivered pre-

configured according to specifications.

Technical characteristics

Input

Programmable input for connexion of standard pulse generator. Input filter may be

selected for pulse width > 0.02 ms/max. 20 kHz, or > 10 ms/max. 50 Hz. By contact

input, the filter for 10 ms/50 Hz should be used.

Auxiliary supplies

(selected by input configuration)

NAMUR supply:

8 VDC ±0.5 V / 8 mA for supply of NAMUR sensors.

2255V102-UK 7

S0 Supply:

15 VDC. Imax. 25 mA. Imin. (800 Ωload) 10 mA.

Special supply:

As option special voltage supplies within the range 5...15 VDC / 30 mA.

Output(s)

Standard current output (pin 3) programmable within the range 0...20 mA.

Min. span 5 mA. Max. span 20 mA.

Max. offset of 50% of the max. value.

Current limit: Max. 26 mA.

Standard voltage output (pin 2) is obtained by leading the current signal through

an internal shunt resistor.

With internal dipswitches a 50 Ωor a 500 Ωshunt resistor is selected, which

results in a voltage output of 0...250 mV and 0 / 0.2...1 V (50 Ω) and 0...2.5 V and

0 / 2...10 V (500 Ω).

With a special internal shunt resistor, units with other output voltages can be

delivered (max. 12 VDC).

Current and voltage signals are referring to the supply gnd. but if both signals are

used simultaneously, only the voltage signal has gnd. as reference.

NPN pulse output (option) for relay, electromechanical counter or equivalent load.

The output is current-limited to 130 mA with a PTC resistor.

The relay output (option) with change-over contact. 300 VA, max. 150 VRMS, 2 A.

Max. DC load at 24 VDC is 1 A.

Status indication

2255 is equipped with 3 status indicators in the front.

f in: Indicates active input (inactive by the NPN input).

Input frequencies > 50 Hz are shown by fixed light.

Dig. out: Indicates active output.

Error: Indicates sensor error by NAMUR input.

8 2255V102-UK

Electrical specifications

Specifications range............................................... -20°C to +60°C

Common specifications:

Supply voltage.......................................................... 19.2...28.8 VDC

Internal consumption ............................................. 2.4 W

Isolation, test / operation..................................... 1400 VAC / 150 VAC

Warm-up time............................................................ 1 min.

Signal / noise ratio .................................................. Min. 60 dB

Signal dynamics, output ....................................... 16 bit

Response time (programmable)......................... 60 ms to 999 s + period time

Calibration temperature ........................................ 20...28°C

Temperature coefficient........................................ < ±0.01% of span / °C

Linearity error ........................................................... ≤±0.1% of span

Effect of supply voltage change....................... < 0.005% of span / VDC

Auxiliary voltages:

NAMUR supply.......................................................... 8 VDC ±0.5 VDC / 8 mA

S0 supply .................................................................... 15 VDC / 25 mA

Special (acc. to order)............................................. 5...15 VDC / 30 mA

Immunity influence................................................. < ±0.5%

Air humidity................................................................ < 95% RH (non-cond.)

Dimensions (HxWxD).............................................. 80.5 x 35.5 x 84.5 mm

Protection degree.................................................... IP50

Weight .......................................................................... 125 g

Input:

General:

Measurement range................................................ 0...20 kHz

Min. measurement range...................................... 0.001 Hz

Low cut off................................................................. 0.001 Hz

Max. offset ................................................................. 90% of selec. max. value

Min. pulse width....................................................... 25 µs

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