User manual

ANALOG CONTROL
135
External Operation and Status Monitoring
Background
The MIL 26 pin connector can also be used to
monitor the status operation and alarm status
of the instrument.
The pins are isolated from the power supply
internal circuitry by photo couplers. Status
Com (Pin 17) is a photo coupler emitter output,
whilst pins 18~22 are photo coupler collector
outputs.
A maximum of 30V and 8mA can be applied to
each pin.
Name and Pin
Description
STATUS COM
17
Common (photo coupler
emitter) for status signals 18,
19, 20, 21 and 22.
CV STATUS
18
Low when CV mode is active.
CC STATUS
19
Low when CC mode is active.
ALM STATUS
20
Low when any of the protection
modes are tripped (OVP,
OCP). Active low.
OUT ON
STATUS
21
Low when the output is on.
PWR OFF
STATUS
22
Active low.
17
Pins 18, 19, 20, 21, 22