20VS1D
P. 1 / 2
EM-4431
ISOLATION AMPLIFIER
(top adjustment, for current output, output isolation)
MODEL
20VS1D
INSTRUCTION MANUAL
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.
22kΩ
22kΩ
17
18
20VS1D
17
18
20VS1D
17
18
20VS1D
■
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.
18 (.71)
49 (1.93)
1 2 3 4 5 6 7 8 9
15161718
22212019
36353433
0.5 (.02) 0.3 (.01)
0.5 (.02)
14 (.55)
14 (.55)
5.5 (.22)
20.32 (.80)
13.97 (.55) 7.62 (.30)
2.54 (.10)
1.27 (.05)
19.25 (.76)
SPAN
ZERO
TERMINAL CONNECTIONS
■
EXTERNAL DIMENSIONS mm (inch)
■
TERMINAL ASSIGNMENTS
+
–
+
–
OUTPUT
+16V
COM (0V)
–16V
9
8
15
16
7
1
2
3
5
20
19
+
–
EXCITATION
*
1
INPUT
POWER SUPPLY
*
To be used in the printed wiring board on which the unit is mounted.
