MG 20VS5-204 Bedienungsanleitung

20VS5-204

P. 1 / 4EM-4426 Rev.2

MG CO., LTD. www.mgco.jp

5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN

ISOLATION AMPLIFIER

(high-accuracy, input isolation) MODEL

20VS5-204

INSTRUCTION MANUAL

BEFORE USE ....

Thank you for choosing us. Before use, please check con-

tents 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 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

• Power Supply

Operational voltage range: 15V DC

Power consumption: approx. 7mA DC (no load)

Install the ﬁlter for the power supply as indicated below.

■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 -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 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.

CHECKING

1) Terminal wiring: Check that wiring is correctly connect-

ed 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 de-

scribed speciﬁcations.

10µF

–

COM

POWER

560µH

+15V

10µF

–

20VS5-204

P. 2 / 4EM-4426 Rev.2

MG CO., LTD. www.mgco.jp

5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN

TERMINAL CONNECTIONS

■EXTERNAL DIMENSIONS mm (inch)

■TERMINAL ASSIGNMENTS

–

OUTPUT

–

POWER

Note. 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.

REFERENCE VOLTAGE SOURCE*

COM (–)

INPUT NON-INVERTING INPUT

INVERTING INPUT

FEEDBACK

PIN ASSIGNMENT

REFERENCE VOLTAGE SOURCE (–)

REFERENCE VOLTAGE SOURCE (+)

COM (–)

NON-INVERTING INPUT

OUTPUT (+)

OUTPUT (–)

POWER SUPPLY (–)

POWER SUPPLY (+)

INVERTING INPUT

FEEDBACK

161417

12.7 (.5) 20.32 (.8) 7.62

(.3)

0.5 (.02)

2.54 (.1) 0.25

(.01)

20.32 (.8)

MAX. 47.5 (1.87) 10.7 (.42)

MAX. 16 (0.63)7.75

(.31)

2.55 (.1)

20VS5-204

P. 3 / 4EM-4426 Rev.2

MG CO., LTD. www.mgco.jp

5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN

APPLICATION EXAMPLES

The primary ampliﬁer in this unit is high accurate. Installing external resistors to the inverting input (pin 2) and the feed-

back (pin 1), this unit can be used as a non-inverting or inverting ampliﬁer.

The series resistance of the ampliﬁer, R1 + R2 must be between 10kΩ and 200kΩ.

The output is proportional to the input.

The gain is 0.98.

E.g. ±9.8V DC for ±10V DC input.

The output is inverted to the input. The

gain is -1.

E.g. +10V DC for -10V DC input and -10V

DC for +10V DC input.

–

R2R1

–

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

OUTPUT VO

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

INPUT VIN

–

REFERENCE

VOLTAGE SOURCE

–

POWER 15V DC

For a non-inverting ampliﬁcation the out-

put is following.

VO= (1 + R1/ R2) × VIN

When R1= 10kΩ, R2= 10kΩ, then the out-

put is following. The gain is 2.

VO= 2 ×VIN

–

R2R1

–

Inverting amplifier circuit G = -R1/ R2

OUTPUT VO

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

INPUT VIN +

–

REFERENCE

VOLTAGE SOURCE

–

POWER 15V DC

For an inverting ampliﬁcation the output

is following.

VO = -(R1/ R2) × VIN

When R1= 20kΩ, R2= 10kΩ, then the out-

put is following. The gain is -2.

VO= -(20kΩ / 10kΩ) × VIN = -2 × VIN

–

Non-inverting circuit G = 0.98

OUTPUT ±9.8V DC

–

REFERENCE

VOLTAGE SOURCE

Non-inverting amplifier circuit: Basic example of G = 0.98

INPUT ±10V DC

–

POWER 15V DC

‒

R2R1

‒

Inverting circuit G = -1

OUTPUT ±10V DC

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

INPUT ±10V DC +

‒

REFERENCE

VOLTAGE SOURCE

‒

POWER 15V DC

20VS5-204

P. 4 / 4EM-4426 Rev.2

MG CO., LTD. www.mgco.jp

5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN

For a non-inverting ampliﬁca-

tion with external 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 ref-

erence voltage source of ±15V DC

and the attenuation of 200Ω and

30kΩ.

For an inverting ampliﬁcation

with external 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 ref-

erence voltage source of ±15V DC

and the attenuation of 200Ω and

30kΩ.

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 accu-

racy described in the data sheet.

–

Non-inverting amplifier circuit zero/span adjustments (input ±5V, output ±10V)

OUTPUT ±10V DC

■

Non-inverting amplifier's circuit with external adjustments: Example of G = 2

–

+REFERENCE

VOLTAGE

SOURCE

9kΩ

10kΩ

50kΩ

(ZERO)

2kΩ

(SPAN)

INPUT ±5V DC

10kΩ

30kΩ

200Ω

–

POWER 15V DC

–

Inverting amplifier circuit zero/span adjustments (input ±10V, output ±10V)

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

–

+REFERENCE

VOLTAGE

SOURCE

9kΩ

10kΩ

100kΩ

(ZERO)

2kΩ

(SPAN)

INPUT ±10V DC

10kΩ

30kΩ

200Ω

–

OUTPUT ±10V DC

–

POWER 15V DC

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