PWR-01 103
Parallel/ Series Operation ｜ Master-Slave Parallel Operation
External monitoring
• External monitoring of the output voltage (VMON) (p.98)
This can be monitored from the master unit.
• External monitoring of the output current (IMON) (p.98)
You can monitor the output current of the master unit and each slave unit. Use the master
unit to monitor the total output current.
• Status monitors (p.99)
You can monitor the status of the following items from the master unit and from the slave
unit: constant-voltage mode (CV STATUS), constant-current mode (CC STATUS), output
on, POWER switch on, and alarms. However, slave units always output the status of con-
stant-current mode.
Remote sensing
This is only available on the master unit (p.30).
Alarms
If an alarm is detected, the units behave as follows:
• Alarm detected on the master unit
The output of each slave unit is turned off, and then the output of the entire system is
turned off.
• Alarm detected on a slave unit
The master unit detects the alarm on the slave unit and then turns off the output of the
entire system.
Clearing alarms
Press ALM CLR (SHIFT+SET) or apply a LOW level signal (0 V to 0.5 V) to or short pin 6 of
the J1 connector to clear the alarm state (p.46), and eliminate the cause of the alarm.
If a shutdown (SD) or parallel alarm (PRL ARM) is activated, turn off the slave units first and
then the master unit. Eliminate the cause of the alarm, and then turn on the master unit first
and then the slave units (p.107).
During parallel operation, do not connect the monitor common cable of the master unit to the
monitor common cables of the slave units. If the cables connected to the load are discon-
nected, the common cables will be damaged.
If an error occurs in a slave unit, the master-slave parallel operation protection (PRL ALM)
turns off the output of the entire system. During master-slave parallel operation, connect pin
14 of the J1 connectors of the master unit and slave units.
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