M-system 43DV1-S Manuel utilisateur
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
HI
LO AMP.
±5V±5V
SCALING
ZERO-OFFSET
CHANGEOVER
–5V
+5V
ISOLATION
ISOLATION
+
–
FG
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
1
2
3
4
5
6
7
8
9
D. GND
HOLD
DP COM
DP1
0V
10 24V
DP2
NC
FG NC
1
2
3
4
5
6
7
8
9
Hi
Lo
NC
NC
NC 10NC
NC
NC
A. GND
CN2 CN1
10
3
10
2
10
1
DP3
(LED ON) DP1
10
0
DP2
L
HOLD
twisted-pair
cable
(a) 5V-CMOS, LSTTL
H
(b) TRANSISTOR
L
HOLD
twisted-pair
cable
(c) PHOTO-COUPLER
H
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).
1
2
3
4
5
6
7
8
9
10
NC
DPCOM
D.GND
HOLD
DP1
DP2
DP3
FG
0V
+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)
1
2
3
4
5
6
7
8
9
10
Hi
Lo
NC
NC
A.GND
NC
NC
NC
NC
NC
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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