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The contacts of external output in the VS Series PLC are for the purpose of to drive external loads. By transmitting the

operation results through its external output points, the PLC drives various loads, such as motors, electromagnetic

valves, electromagnetic conductors, etc. and virtually perform control motions.

For various loading needs, the VS Series PLCs have different output types, such as relay, NPN transistor and PNP

transistor. Every relay has a coil and contact that uses magnetically coupled to separate the PLC internal circuit from

the external, but a transistor output uses a photocoupler to prevent noise interference.

Relay outputs have approximately 10ms of output delay, while transistor outputs have approx. 1ms. These delays

result that certain applications cannot be fully met. Therefore, the 4 output points of Y0~Y3 are designated to be

multi-function output points.

Except for the common output function, the other functions mentioned above can only available be used at a

transistor output main unit.

For the descriptions of each item, please refer to the page listed at the “Ref. Page No.” above.

At a time, each Y0~Y3 output point allows to execute one instruction of special function only. Also, cannot intermix

different functional groups mentioned above.

The frequency of the Y0~Y3 output at the VS1, VS2, VSM or VS3 series is different, the list below is the capability:

External output point

Y1 Y2

Common Output

Paulse output

PWM Output

Positioning Control

The output type is selectable, that includes the relay, NPN transistor or PNP transistor.

Use the PLSY or PLSR instruction to generate a pulse string to the driver of stepper or servo motor

Use the PWM instruction to generate PWM signal

Use the Positioning Control instruction to generate positioning pulses directly to the driver of the

step motor or servo motor, by the method to execute the accurate positioning control

VS1

VS2

VSM

VS3

Y1 Y2

50KHz

200KHz 200KHz 200KHz 200KHz

50KHz

200KHz 200KHz 200KHz 200KHz

187

189

423

1MHz

VSM-28ML

1MHz 1MHz 1MHz

2-2-2 External Output (Y)

Ref.

Page

No.

Function

Series

External output point

Brand	Vigor
Model	VS Series
Category	Controller
Language	English

Vigor VS Series User Manual

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Vigor VS Series Specifications