20VS5-200

INSTRUCTION MANUALISOLATION AMPLIFIER(ultra-high speed response, input isolation)

BEFORE USE ....
Thank you for choosing us. 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 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.

MODEL 20VS5-200■ 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, power consumption
Operational rating 11.5 – 16.0V DC, 40mA approx. (no load)
Install the filter for the power supply as indicated below.
560µH
+15V
POWER
COM++10µF10µF––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 subject the unit to physical impact.
• 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 frequency
line, 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 ø1.6 and through-hole ø0.8 are recommended.

MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPANEM-4414 Rev.4

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20VS5-200

TERMINAL CONNECTIONS■ EXTERNAL DIMENSIONS mm (inch)
15 (.59)

10.5 (.41)

PIN ASSIGNMENT
17161514REFERENCE VOLTAGE SOURCE (–)
REFERENCE VOLTAGE SOURCE (+)
COM (–)
NON-INVERTING INPUT
INVERTING INPUTFEEDBACK

654321

20.32 (.8)
12.7 (.5)

2.54 (.1).5 (.02)49 (1.93)

2.54 (.1)

7.62(.3)

OUTPUT (+)
OUTPUT (–)
POWER SUPPLY (–)
POWER SUPPLY (+)5(.2)(BOTTOM VIEW)

6.5(.26)■ TERMINAL ASSIGNMENTS

FEEDBACK 117 +INVERTING INPUT 216 –NON-INVERTING INPUT 314 +COM (–) 415 –OUTPUT

INPUT

POWER

+ 5REFERENCE VOLTAGE SOURCE– 6Note. The reference voltage source is common to the COM (–), terminal 4.

MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPANEM-4414 Rev.4

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20VS5-200

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 combined input resistance of the amplifier must be 20kΩ in maximum.
■ Non-inverting amplifier circuit: Basic example of G = 1

The output is proportional to the input. Thegain is 1.
E.g. ±5V DC for ±5V DC input.

1–+2–3++17 +OUTPUT ±5V DC

INPUT ±5V DC–416 –+ 514 +– 615 –POWER 15 V DC

REFERENCE VOLTAGE SOURCE

Non-inverting circuit G = 1■ Inverting amplifier circuit: Basic example of G = -1 (output inverted to the input)

R1

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

R1+1–2–3++INPUT ±5V DC–17 +OUTPUT ±5V DC416 –+ 514 +– 615 –POWER 15 V DC

REFERENCE VOLTAGE SOURCE

Inverting circuit G = -1

■ Non-inverting amplifier circuit: Example of G = 1 + R1 / R2R2R11–+2–3+17 ++OUTPUT Vo

For a non-inverting amplification the outputis following.
VO = (1 + R1 / R2) × VINWhen R1 = 10kΩ, R2 = 10kΩ, then the output
is following. The gain is 2.
VO = 2 × VIN

INPUT VIN–416 –+514 +–615 –POWER 15 V DC

REFERENCE VOLTAGE SOURCE

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

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

R2R1+1–2–3+

INPUT VIN–+17 +OUTPUT Vo

416 –+ 514 +– 615 –For an inverting amplification the output isfollowing.
VO = -(R1 / R2) × VINWhen R1 = 20kΩ, R2 = 10kΩ, then the outputis following. The gain is -2.
VO = -(20kΩ / 10kΩ) × VIN = -2 × VIN

POWER 15 V DC

REFERENCE VOLTAGE SOURCEInverting amplifier circuit G = -R1 / R2

MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPANEM-4414 Rev.4

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20VS5-200■ Non-inverting amplifier circuit with external adjustments: Example of G = 2
10kΩ(SPAN)
10kΩ

9kΩ

12kΩ

–+INPUT ±2.5V DC

50kΩ(ZERO)

200Ω

–30kΩ

2–

3++17 +OUTPUT ±5V DC

416 –

5 + REFERENCE

14 +VOLTAGE
6 – SOURCE

15 –POWER 15 V DC

For a non-inverting amplification withexternal adjustments, when the combined resistance of the span adjustment and 9kΩ is 10kΩ, the gain is (1 +10kΩ / R1) × VIN. With the span adjustment (2kΩ), the output is configurable.
The zero is adjustable with a reference
voltage source of ±14V DC and the attenuation of 200Ω and 30kΩ.

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)
10kΩ

9kΩ

+12kΩ

–
2–

3+INPUT ±5V DC–

100kΩ(ZERO)

200Ω
30kΩ+17 +OUTPUT ±5V DC

416 –

5 + REFERENCE

14 +VOLTAGE
6 – SOURCE

15 –For an inverting amplification withexternal adjustments, when the combined resistance of the span adjustment and 9kΩ is 10kΩ, the gain is-(10kΩ / R2) × VIN. With the span adjustment (2kΩ), the output is configurable. The zero is adjustable with a reference voltage source of ±14V DC andthe attenuation of 200Ω and 30kΩ.

POWER 15 V DC

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-4414 Rev.4

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