Kikusui OT01-PCR12000LA/2, Operation Manual

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5-2 Single-phase Parallel Operation OT01-PCR-LA/2
5.1 Basic Operations
This section describes the operation method for the PCR-LA power supplies, which
differs from the method of operating a PCR-LA AC power supply singly. For infor-
mation not provided here, see the PCR-LA AC Power Supply Operation Manual.
Basic Operation for Parallel Operation
■
Controlling all PCR-LA power supplies from the master unit
In parallel operations, all PCR-LA power supplies are controlled from the master
unit. Thus, the master power supply’s control panel is operated.
• When parallel operation is started, all PCR-LA power supplies are started up
under the conditions (voltage, frequency, etc.) that have been set in the master
unit.
■
Alarm occurrence
If an alarm occurs in one of the PCR-LA power supplies during parallel operation,
the outputs of all PCR-LA power supplies are turned OFF.
■
Output current value
For the output current, the total value of the output currents of the master and slave
units is displayed on the master PCR-LA power supply’s control panel.
■
Slave-unit display
A parallel operation address (1-digit fi gure) appears in the frequency display area on
the slave PCR-LA power supplies’ control panels.
5.2 Setting Limit Values
Limit values are set from the master PCR-LA power supply. In particular, the cur-
rent limit should be set with the current value in parallel operation taken into
account.
When the PCR-LA power supplies perform parallel operation for the
fi rst time, the
current limit value that has been set to the master unit applies to all power supplies.
The voltage limits and frequency limits are also set to the values that have been set
for the master unit.
For the setting procedure, see the PCR-LA AC Power Supply Operation Manual.
NOTE