20VS5-G200

INSTRUCTION MANUALISOLATION AMPLIFIERMODEL 20VS5-G200(high-accuracy, input isolation)

BEFORE USE ....
Thank you for choosing us. Before use, check the contents ofthe package you received as outlined below.
If you have any problems or questions with the product,
please contact our sales office or representatives.
■ PACKAGE INCLUDES:
Amplifier........................................................................ (1)■ MODEL NO.
Confirm that the model number described on the product isexactly what you ordered.
■ INSTRUCTION MANUALThis manual describes necessary points of caution when
you use this product, including installation, connection andbasic maintenance procedures.

■ AND ....
• The unit is designed to function as soon as power is supplied, however, a warm up for 10 minutes is required forsatisfying complete performance described in the datasheet.
• 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.

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% ofthe full-scale.
4) Output: Check that the load resistance meets the described specifications.

POINTS OF CAUTION■ POWER INPUT RATING & OPERATIONAL RANGE• Power Supply
Operational voltage range: 15 V DC ±10%Power consumption: Approx. 7 mA DC (no load)
Install the filter for the power supply as indicated below.
560µH
+15V
POWER
COM++10µF

10µF––1415■ 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 continuousvibration. Do not apply physical impact to the unit.
• Environmental temperature must be within -10 to +70°C(14 to 158°F) with relative humidity within 30 to 90% 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 frequencyline, etc.).
• Do not bind these cables together with those in which
noises are present. Do not install them in the same duct.
■ INSTALLING THE MODULE
When it is installed on the printed wiring board, land diameter ø1.5 and through-hole ø0.9 are recommended.

MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPANEM-4442 Rev.1

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20VS5-G200

TERMINAL CONNECTIONS■ EXTERNAL DIMENSIONS mm (inch)

10.7 (.42)

7.75 MAX. 16 (0.63)(.31)

MAX. 47.5 (1.87)

161417

2.54 (.1)
12.7 (.5)

20.32 (.8)

20.32 (.8)

7.62(.3)

0.5 (.02) 0.25(.01)

PIN ASSIGNMENT
1FEEDBACK

2INVERTING INPUT

3NON-INVERTING INPUT

4COM (–)

5REFERENCE VOLTAGE SOURCE (+)

6REFERENCE VOLTAGE SOURCE (–)

14POWER SUPPLY (+)

15POWER SUPPLY (–)

16

OUTPUT (–)

17OUTPUT (+)

2.55 (.1)■ TERMINAL ASSIGNMENTS

INPUT

FEEDBACK 1

17 +INVERTING INPUT 216 –NON-INVERTING INPUT 314 +COM (–) 415 –OUTPUT

POWER+ 5REFERENCE VOLTAGE SOURCE*– 6Note. The reference voltage source is common to the COM (–), terminal 4.
*To be used in the printing wiring board on which the unit is mounted.

MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPANEM-4442 Rev.1

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20VS5-G200

APPLICATION EXAMPLES
The primary amplifier in this unit is high accurate. Installing external resistors to the inverting input (pin 2) and the feedback (pin 1), this unit can be used as a non-inverting or inverting amplifier.
The series resistance of the amplifier, R2 + R2 must be less than 200kΩ.
■ Non-inverting amplifier circuit: Basic example of G = 0.98

The output is proportional to the input.
The gain is 0.98.
E.g. ±4.9 V DC for ±5 V DC input.

1+INPUT ±5V DC

2–3+–17 ++OUTPUT ±4.9V DC

416 –+ 5REFERENCE

14 +– 615 ––VOLTAGE SOURCE

POWER 15V DC

Non-inverting circuit G = 0.98

■ Inverting amplifier circuit: Basic example of G = -1 (output inverted to the input) (R1 ≈ R2)
R2+

R1

The output is inverted to the input. The
gain is -1.
E.g. +5 V DC for -5 V DC input and -5 V
DC for +5 V DC input.

1INPUT ±5V DC‒2‒3+‒+17 +OUTPUT ±5V DC

416 ‒+ 514 +REFERENCE
VOLTAGE SOURCE ‒15 ‒

6POWER 15V DC

Inverting circuit G = -1

■ Non-inverting amplifier circuit: Example of G = 1 + R1 / R2
R2

R11+–2–

3++17 +OUTPUT VO

INPUT VIN

–416 –+ 514 +REFERENCE
VOLTAGE SOURCE –For a non-inverting amplification the output is following.
VO = (1 + R2 / R2) × VINWhen R2 = 10 kΩ, R2 = 10 kΩ, then theoutput is following. The gain is 2.
VO = 2 × VIN

POWER 15V DC

15 –6Non-inverting amplifier circuit G = 1 + R1 / R2

■ Inverting amplifier circuit: Example of G = -R1 / R2 (output inverted to the input)
R2

R1+1––

2–

3+

INPUT VIN+17 +OUTPUT VO

416 –+ 514 +REFERENCE
VOLTAGE SOURCE –For an inverting amplification the outputis following.
VO = -(R2 / R2) × VINWhen R2 = 20 kΩ, R2 = 10 kΩ, then theoutput is following. The gain is -2.
VO = -(20 kΩ / 10 kΩ) × VIN = -2 × VIN

POWER 15V DC

15 –6Inverting amplifier circuit G = -R1 / R2

MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPANEM-4442 Rev.1

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20VS5-G200■ Non-inverting amplifier's circuit with external adjustments: Example of G = 210kΩ
(SPAN)
9kΩ

10kΩ

2kΩ

+
INPUT ±2.5V DC–50kΩ
(ZERO)

200Ω

12–3+–+OUTPUT ±5V DC

16 –45 + REFERENCE

14 +6 – SOURCE15 –VOLTAGE30kΩ

17 +POWER 15V DC

For a non-inverting amplification
with external adjustments, when
the combined resistance of thespan adjustment and 9 kΩ is 10kΩ, the gain is (1 + 10 kΩ / R2)
× VIN. With the span adjustment(2 kΩ), the output is configurable.
The zero is adjustable with a reference voltage source of ±7 V DC
and the attenuation of 200 Ω and30 kΩ.

Non-inverting amplifier circuit zero/span adjustments (input ±2.5V, output ±5V)

■ Inverting amplifier's circuit with external adjustments: Example of G = -1 (output inverted to the input)
10kΩ
(SPAN)
9kΩ

10kΩ

+2kΩ

INPUT ±5V DC–100kΩ
(ZERO)

200Ω

12–3+–+OUTPUT ±5V DC

416 –

5 + REFERENCE

14 +6 – SOURCE

15 –VOLTAGE

30kΩ

17 +

POWER 15V DC

For an inverting amplification
with external adjustments, when
the combined resistance of thespan adjustment and 9 kΩ is 10kΩ, the gain is -(10 kΩ / R2) × VIN.
With the span adjustment (2 kΩ),the output is configurable. The
zero is adjustable with a reference voltage source of ±7 V DCand the attenuation of 200 Ω and30 kΩ.

Inverting amplifier circuit zero/span adjustments (input ±5V, output ±5V)

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.

MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPANEM-4442 Rev.1

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