Kikusui PWX750ML, User Manual

Page: 71 / 110

PWX
71
Master-Slave Parallel Operation
Parallel
/Series Operation
4
External monitoring
p.67
• External monitoring of the output voltage (V MON)
This can be monitored from the master unit.
• External monitoring of the output current (I MON)
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
You can monitor the status of the following items from the master unit and from each 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
p.20
This is only available on the master unit.
Alarm
If an alarm is detected, the units behave as follows:
• Master unit
If an alarm is detected on the master unit, output of each slave unit is turned off, and then
the output of the entire system is turned off.
• Slave unit
The slave unit independently enters the alarm state and turns its output off.
The output does not turn off on the master and other slave units.
p.31
You can use the CONFIG settings to specify what happens when the output is turned off
because an alarm is detected. You can select to turn the output on automatically when the
problem that caused the alarm is fixed (CF03: Auto) or to leave the output turned off when the
problem is fixed (CF03: SAFE). (This parameter only applies to the OHP, FAN, and AC-FAIL
errors.)

Clearing alarms
p.31, p.75
To clear alarms, (1) press ALM CLR (SHIFT+SET); (2) set pin 5 of the J1 connector to LOW
(0 V to 0.5 V) or shorted; or (3) turn off the slave units, turn off the master unit, fix the problem
that caused the alarm, turn on the slave units, and then turn on the master unit.
CAUTION
During master-slave 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 disconnected, the common cables will be damaged.
See
See
See
See