isolation amplifier - M

isolation amplifier - M
20VS1C
INSTRUCTION MANUAL
ISOLATION AMPLIFIER
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.
20VS1C
MODEL
(top adjustment, input isolation)
■ INSTALLING THE MODULE
When it is installed on the printed wiring board, land diameter ø1.5 and through-hole ø0.9 are recommended.
■ AND ....
•The unit is designed to function as soon as power is supplied, 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 endure it without breakdown, however, it may shorten appropriate life duration.
TERMINAL CONNECTIONS
■ EXTERNAL DIMENSIONS mm (inch)
19.25 (.76)
POINTS OF CAUTION
SPAN
■ 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. 10mA without load
•When there is spike noises in the power, make a filter with
an appropriate capacitor and inductor to cut it off.
■ 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 frequency of each module to a same one for prevention.
20VS1C
20VS1C
20VS1C
22kΩ
22kΩ
17
17
17
18
18
18
49 (1.93)
5.5 (.22)
14 (.55)
18 (.71)
0.5 (.02)
0.3 (.01)
0.5 (.02)
20.32 (.80)
13.97 (.55) 7.62 (.30)
1.27 (.05)
1 2 3 4 5 6 7 8 9
15161718
36353433
22212019
14 (.55)
■ ENVIRONMENT
•Indoor use
•When heavy dust or metal particles are present in the air,
install the unit inside proper housing with sufficient ventilation.
•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.
ZERO
2.54 (.10)
■ TERMINAL ASSIGNMENTS
+
1
20 +
COM (–)
2
19 –
+15V 7
15 +
EXCITATION*1 COM (0V) 9
16 –
INPUT
–15V
OUTPUT
POWER SUPPLY
8
*To be used in the printed wiring board on which the unit is mounted.
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20VS1C
■ PIN ASSIGNMENT
NO.
FUNCTION
1
Input (+)
2
Input (-)
3
Input Amplification
4
Phase Compensation
5
NC
6
NC
7
Excitation (+)
8
Excitation (-)
9
Excitation (COM)
15
Power (+)
16
Power (-)
17
Synchronous Input
18
Synchronous Output
19
Output (-)
20
Output (+)
21
NC
22
NC
33
NC
34
NC
35
NC
36
NC
CHECKING
1) Terminal wiring: Check that wiring is correctly connected according to the connection diagram.
2) Power input voltage: Check voltage across the pins.
3) Input: Check that the input signal is within 0 – 100% of
the full-scale.
4)Output: Check that the load resistance meets the described specifications.
APPLICATION EXAMPLE
Zero/span adjustments of the module can be made via top
adjuster. Opening the terminals 3 and 9, the unit works as
0 – 10V input and 0 – 10V output.
The following example shows that output 0 – 10V DC is
made from input 0 – 5V DC. (R = 10kΩ)
As 10kΩ is installed in the internal circuit, if R[kΩ] (R ≥
1.1kΩ) is connected between pin 3 and pin 9, and
input = VIN, output = VOUT, then VOUT = (1+10/R) × VIN
+ 1
INPUT 0-5VDC
–
2
+
–
3
100pF
R
10kΩ
4
9
ADJUSTMENT PROCEDURE
This unit is calibrated at the factory to meet the ordered
specifications, therefore you usually do not need any calibration.
For matching the signal to a receiving instrument or in case
of regular calibration, adjust the output as explained in the
following.
■ HOW TO CALIBRATE THE OUTPUT SIGNAL
Use a signal source and measuring instruments of sufficient
accuracy level. Turn the power supply on and warm up for
more than 10 minutes.
1) ZERO: Apply 0% input and adjust output to 0%.
2) SPAN: Apply 100% input and adjust output to 100%.
3) Check ZERO adjustment again with 0% input.
4) When ZERO value is changed, repeat the above procedure 1) – 3).
MAINTENANCE
Regular calibration procedure is explained below:
■ CALIBRATION
Warm up the unit for at least 10 minutes. Apply 0%, 25%,
50%, 75% and 100% input signal. Check that the output
signal for the respective input signal remains within accuracy described in the data sheet.
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: info@m-system.co.jp
EM-4430
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