GW Instek PPH-1503 - Manual (Page 56)

PPH-1503 User Manual
56
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.