GW Instek PEL-3000 Series User Manual - Manual (Page 151)

EXTERNAL CONTROL
149
Alarm Status
Description Pins 16 and 17 of the J1 connector are used to
monitor whether the alarm is on or off.
Pin out The Alarm Status pin
is a photo-coupled
open-collector
output.
17
16
Photocoupler input: 30V max, 8mA, max.
Short Control
Description The Short Signal Out pins (19 and 20) are
30VDC 1A relay contact outputs. These outputs
can be used to drive an external relay to
physically short the terminal outputs.
Pin Inputs The Short Signal Out pins are normally open
until the short function is activated.
PEL-3000
External
relay driver
20
19
NO
J1
connector
Input
Terminals
NO
Note
The external relay driver is not a standard
accessory. Please provide your own external relay
and driver circuit.