M-system 43DV1-S Manual de usuario

EM-9421-B Rev.4P. 1 / 3

1. GENERAL DESCRIPTIONS

The M-System’s Model 43DV1 is a small DIN size, 3 1/2 digit DC

panel meter. It utilizes a high quality one-chip LSI of dual slope

A/D conversion, which provides also simple and cost-effective

design.

The 43DV1-S offers standard process signals with zero offset,

such as 4 to 20mA DC or 1 to 5V DC. Zero elevation and span

adjustment are achieved by trimmers within the range of 1999

counts. All of the 43DV1 meters are available with a 7-segment

red LED display with 8 mm (0.31") digit height, and the display

is highly legible in all indoor applications. They utilize a single-

ended input configuration. Display hold is available with an

external control signal.

The housing is DIN standard (W48 ×H24 ×D72 mm) and easily

mountable to the panel surface by the snap-in method utilizing

flexibility of plastic.

3 1/2 DIGIT DC PANEL METER

Instruction Manual

model: 43DV1-S

Process Meter

2. SPECIFICATIONS

2-1) RANGE

MODEL PERMISSIBLE

OVER-LOAD

43DV1-S4 0 – 10V 1MΩ±250V

43DV1-S5 0 – 5V 1MΩ±250V

43DV1-S6 1 – 5V 1MΩ±250V

43DV1-SA 4 – 20mA 20Ω±110mA

43DV1-SB 0 – 20mA 20Ω±110mA

43DV1-SC 0 – 10mA 40Ω±75mA

43DV1-SG 0 – 1mA 400Ω±25mA

43DV1-SJ 0 – 5mA 80Ω±55mA

INPUT IMPEDANCERANGE

2-2) GENERAL SPECIFICATIONS

*under conditions: temperature 23°C ±5°C, humidity 20 to

85% RH

Input configuration: single-ended

A/D conversion: dual-slope integration with automatic zero

correction

NMRR:40 dB, 50/60 Hz, read rate 2.5/s

Accuracy*

Voltage:±(0.15% of ❘reading ❘+ 1 digit)

Current:±(0.2% of ❘reading ❘+ 1 digit)

Temp. coefficient: ±(0.01% of ❘reading ❘+ 0.1 digits)/°C

Read rate:2.5/s

Polarity indication: for negative only

Over-range indication: the most significant digit indicates

"1" (>1999) or "-1" (<-1999) and other digits

blanked

LED:8mm (0.31") 7-segment, red

Scaling factor:analog scaling by trimmers

Zero:0to ±1999 counts

Span:(zero point + 100) to +1999 counts

Decimal point position: 3 positions selectable

Hold input:negative logic; 5V-CMOS, LSTTL compatible

Warm-up:5minutes

Power supply:24V DC ±10%, approx. 60mA at 24V DC

Operating temperature: 0 to 55°C (32 to 131°F)

Relative operating humidity: 20 to 85% RH (non-condensing)

Storage temperature: -20 to +70°C (-4 to +158°F)

Relative storage humidity: 20 to 95% RH (non-condensing)

Insulation resistance: ≥100MΩwith 500V DC

Dielectric strength: 1000V AC @1 minute (input to power)

500V AC @1 minute (power to gnd)

Size: W48×H24×D72 mm (1.89"×0.94"×2.83")

Weight:60 g (0.13 lbs)

Housing material: black plastic

Figure 1. Schematic diagram

INPUT

LO AMP.

±5V±5V

SCALING

ZERO-OFFSET

CHANGEOVER

–5V

+5V

ISOLATION

–

POWER

INPUT

POLARITY &

DECIMAL POINT

HOLD INPUT

SPAN

CHANGEOVER

A / D

EM-9421-B Rev.4P. 2 / 3

3. INSTALLATION

Keep the ambient temperature and relative humidity within

the limit described in Chapter 2. 10 to 35°C (50 to 95°F) and 20

to 70% RH are recommended conditions for higher accuracy

requirements.

Insert the meter in pressing the both sides' retainers.

4-2) ANALOG INPUT

Connect DC input to the pin 1 - 2 of CN1. Typical configuration

is shown in Figure 4.

Figure 4. Typical connection

4-3) DECIMAL POINT POSITION

Connect terminals as shown below.

DP1 (×101) LED ON Connect CN2 pin 4 and pin 3

DP2 (×102) LED ON Connect CN2 pin 5 and pin 3

DP3 (×103) LED ON Connect CN2 pin 6 and pin 3

4-4) DISPLAY HOLD

When HOLD signal is applied, the display is held. With contact

input, connect a relay to the pin 1 - 2 of CN2 as shown in Figure

4. With the contact closed, the display indication is held. For

other interfaces, examples are shown in Figure 5.

48 (1.89)

45 (1.77)

24 (0.94) 4.5

(0.18) 72 (2.83)

51 (2.01)

21.8 (0.86)

Figure 2. External dimensions & panel cutout

DP3

D. GND

HOLD

DP COM

DP1

10 24V

DP2

FG NC

NC 10NC

A. GND

CN2 CN1

DP3

(LED ON) DP1

DP2

HOLD

twisted-pair

cable

(a) 5V-CMOS, LSTTL

(b) TRANSISTOR

HOLD

twisted-pair

cable

photo-

coupler

D.GND

HOLD

D.GND

HOLD

Figure 5. Hold control signal interface

45+0.6 (1.80)

–0 (1.77)

22.2+0.3 (0.89)

–0 (0.87)

PANEL CUTOUT

Panel thickness: 0.5 to 4 mm

(0.02" to 0.16")

4-1) POWER & FRAME GROUND

Supply DC voltage (rating ±10%) to the pin 9 - 10 of CN2. Use

the pin 8 (FG) of CN2 for grounding when necessary. This FG

pin is connected to power (0V) through a capacitor (1000PF).

DPCOM

D.GND

HOLD

DP1

DP2

DP3

+24V

DECIMAL

POINT

POWER

SOURCE

KEY

*Pin No.2 (Lo) – 5 (A.GND) of CN1 and No.1 (D.GND) of

CN2 are connected internally.

They are isolated from No.9 (0V) of CN2.

**The connectors are removable.

CN2

(lower)

A.GND

INPUT

KEY

CN1

(upper)

ISOLATION

4. TERMINAL CONNECTIONS & ADJ.

Figure 3. Connector pin assignment

EM-9421-B Rev.4P. 3 / 3

4-5) SCALING

The display range is factory calibrated to 0 to +1000 counts with

the zero coarse switch at its center position (0 ±1000 counts).

The range is user-adjustable throughout the full-scale for the

process input range with utilizing the adjustment trimmers

(Figures 6 & 7) following a procedure described below:

A) Set the zero coarse switch to the appropriate position:

[+] (left) position: 0 to +1999 counts

center position: 0 ±1000 counts

[–] (right) position: -1999 to 0 counts

B) Set the span coarse switch to the appropriate position:

left position: +100 to 2000 counts

right position: +2000 to 3998 counts

C) Input 0% signal and turn the ZERO adjustment trimmer so

to get the desired display count.

D) Input 100% signal and turn the SPAN adjustments so to get

the desired display count.

E) Input again 0% signal and check the desired display count

is indicated. If the zero point is moved, go through the

procedure C) & D) until the indication is stabilized.

P.C. BOARD

HOUSING

LATCHING HOLE

for DISPLAY BOARD

STOPPER

Push up and shift forward the stopper

with your finger or a screwdriver.

Push from the rear and pull out the

display board (PCB).

Figure 7. Front panel

Figure 6. How to remove housing

SPAN COARSE SWITCH

SPAN ADJ.

TRIMMER

ZERO ADJ.

TRIMMERZERO COARSE SWITCH

left front

right

M-SYSTEM WARRANTY

M-System warrants such new M-System product which it manufactures to be free from defects in materials and workmanship during the 36-month period following the date that such

product was originally purchased if such product has been used under normal operating conditions and properly maintained, M-System's sole liability, and purchaser's exclusive

remedies, under this warranty are, at M-System's option, the repair, replacement or refund of the purchase price of any M-System product which is defective under the terms of this

warranty. To submit a claim under this warranty, the purchaser must return, at its expense, the defective M-System product to the below address together with a copy of its original

sales invoice.

THIS IS THE ONLY WARRANTY APPLICABLE TO M-SYSTEM PRODUCT AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING ANY IMPLIED

WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. M-SYSTEM SHALL HAVE NO LIABILITY FOR CONSEQUENTIAL, INCIDENTAL OR

SPECIAL DAMAGES OF ANY KIND WHATSOEVER.

M-System Co., Ltd., 5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN, Phone: (06) 6659-8201, Fax: (06) 6659-8510, E-mail: [email protected]

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