M-system 20VS10D Instruction Manual

INSTRUCTION MANUAL
ISOLATION AMPLIFIER
(top adjustment, for current output, output isolation)

BEFORE USE ....

Thank you for choosing M-System. Before use, please check
contents of the package you received as outlined below.
If you have any problems or questions with the product,
please contact M-System's Sales Office or representatives.
■ PACKAGE INCLUDES:
Amplifier ....................................................................... (1)
■ MODEL NO.
Confirm Model No. marking on the product to be exactly
what you ordered.
■ INSTRUCTION MANUAL
This manual describes necessary points of caution when
you use this product, including installation, connection and
basic maintenance procedures.

POINTS OF CAUTION

■ POWER INPUT RATING & OPERATIONAL RANGE
• Locate the power input rating marked on the product and
confirm its operational range as indicated below:
15V DC ±2%, approx. 35mA with 20mA output
• When there is spike noises in the power, make a filter with
an appropriate capacitor and inductor to cut it off.
■ ENVIRONMENT
• Indoor use
• When heavy dust or metal particles are present in the air,
install the unit inside proper housing with sufficient ven-
tilation.
• Do not install the unit where it is subjected to continuous
vibration. Do not subject the unit to physical impact.
• Environmental temperature must be within 0 to 60°C (32
to 140°F) with relative humidity within 10 to 95% RH in
order to ensure adequate life span and operation.
■ WIRING
• Do not install cables (power supply, input and output)
close to noise sources (relay drive cable, high frequency
line, etc.).
• Do not bind these cables together with those in which
noises are present. Do not install them in the same duct.
• Mounting multiple isolator modules on single printed
wiring board could cause beat. In such case, use the way
shown as below to make the power supply oscillation fre-
quency of each module to a same one for prevention.
20VS1D
20VS1D
17 17
18 18
20VS1D
22k 22k
17
18
MODEL

■ INSTALLING THE MODULE

When it is installed on the printed wiring board, land diam-
eter ø1.5 and through-hole ø0.9 are recommended.
■ AND ....
• The unit is designed to function as soon as power is sup-
plied, however, a warm up for 10 minutes is required for
satisfying complete performance described in the data
sheet.
• With voltage output, do not leave the output terminals
shortcircuited for a long time. The unit is designed to en-
dure it without breakdown, however, it may shorten ap-
propriate life duration.

TERMINAL CONNECTIONS

■ EXTERNAL DIMENSIONS mm (inch)

18 (.71)
0.3 (.01) 0.5 (.02)
2.54 (.10)

■ TERMINAL ASSIGNMENTS

20
+
INPUT
19
–
15
+
POWER SUPPLY
–
16
3
5
*To be used in the printed wiring board on which the unit is mounted.
20VS1D
20VS1D
19.25 (.76)
SPAN
ZERO
49 (1.93)
20.32 (.80) 13.97 (.55) 7.62 (.30)
1.27 (.05)
1 2 3 4 5 6 7 8 9 15161718
36353433 22212019
1
+
OUTPUT
2
–
7
+16V
9
COM (0V) EXCITATION*
8
–16V
EM-4431
1
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