User Manual

OPERATION
83
Status Signals (CV, CC & ALARM)
Introduction
 Constant-Voltage (CV) Status Signal
This status signal goes low when the PSB-2000
series power supply unit enters the constant-
voltage (CV) status.
 Constant-Current (CC) Status Signal
This status signal goes low when the PSB-2000
series power supply unit enters the constant-
current (CC) status.
 Alarm Status Signal
This status signal goes low when the PSB-2000
series power supply unit enters the alarm
status.
Status Signal Characteristics
(SHARP PC3H7 photocoupler)
Item
Symbol
Max. rating
Unit
Output
Collector-emitter voltage
VCEO
66
V
Emitter-collector voltage
VECO
6
V
Collector current
IC
50
mA
Collector loss
PC
150
mW
Total allowable loss
PT
170
mW
Isolation voltage
BVS
2500
Vrms
CH1: Constant-voltage (CV)status: Pins 23 and 26 (COM)
Constant-current (CC)status: Pins 24 and 26 (COM)
Alarm status: Pins 25 and 26 (COM)
CH2: Constant-voltage (CV) status: Pins 4 and 1 (COM)
Constant-current (CC) status: Pins 3 and 1 (COM)
Alarm status: Pins 2 and 1 (COM)