Gw-instek PPH-1503 User Manual download pdf (Page 56)

PPH-1503 User Manual

External Relay Control

Function

Description

When the Relay control feature is turned on, it is

synced to the current limit of the power suppy.

The external relay control is divided into two

different types, a limit relay and a trip relay.

The limit relay is used in conjuction with CC

mode. When the constant current setting value is

reached, the relay control signal will go high and

will return back to the low level when the current

level goes back below the constant current setting.

The trigger relay is used in conjuction with CC

mode. When the constant current setting value is

reached, the relay control signal will go high and

the output is disabled. When the output goes back

on and the current is less than the current setting

value, the relay control signal will back to the low

level.

Rear Panel

Control Interface

The rear panel control interface

has five terminals, +5V,

IN(software upgrade), OUT

(outputs the control signals) and

GND (connected to the chasis

ground or earth ground),

respectively.

Wiring Method

A thin screwdriver or similar tool will need to be

inserted into the release mechanism (highlighted

in orange in the figure above) to open the

terminals. Insert an exposed wire into the terminal

and release the mechanism to lock the wire into

place.

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Gw-instek PPH-1503 User Manual Page 56