4 PD05M-PCR-LE/PD05S-PCR-LE
Turning the Power On
Power ON
Turn on the POWER switches on the master unit and all slave units
within 10 seconds. Alternatively, turn the POWER switches of all
PCR-LEs ON simultaneously.
The firmware version is displayed for a few seconds.
If there are no errors, the master unit displays the home position (the
basic screen), and the slave units display "SLAVE-x" (where x is the
slave unit number).
Master-slave parallel operation is controlled from the master unit.
You cannot use the panel of the slave unit.
Power OFF
Turn off all POWER switches.
For emergency situations, we recommend that you insert a circuit
breaker that separates the entire system from the switchboard.
Synchronizing the POWER Switches
You can configure the system so that when you turn on MASTER
unit, all SLAVE units also turn on.
Power ON
1
Check that the POWER switches of PCR-LEs series
are off.
2
Set the POWER SELECTOR switch of the PCR-LE
master unit to MASTER.
The POWER SELECTOR switch is on the front panel.
3
Set the POWER SELECTOR switches of the other
PCR-LEs to SLAVE.
4
Turn ON the POWER switch of the PCR-LE slave
units.
Even when you turn ON the POWER switches, the PCR-LEs
do not turn on.
5
Turn ON the POWER switch of the PCR-LE master
unit.
The PCR-LE slave units will also turn on.
- Note -
The power signal travels from the J2 connector to the J1 connec-
tor. Operating the POWER switch of the PCR-LE master unit will
cause the other PCR-LEs to respond in sync.
POWER ON
Synchronized POWER ON
PCR–LE
Power OFF
When you turn off the POWER switch on the master unit, all slave
units power off in sync.
Power OFF in an Emergency
In an emergency, turn OFF all POWER switches.
To Stop Synchronization
Set the POWER SELECTOR switches of all PCR-LEs to “MASTER”.
Operation Check
Check the operation of the PCR-LE series before you connect the
load. Check the following items with no load connected. For detail
of settings, see the PCR-LE series operation manual.
POWER switch ON
Voltage setting
OUTPUT ON/OFF
Voltage-range switching
If a trouble is occurring on even one unit, you will not be able to
perform parallel operation.
Performing zero adjustment
When you perform master-slave parallel operation for the first time,
current measurement offsets may appear in the current, power,
power factor, and apparent power displays and the harmonic cur-
rent analysis values (minute values are displayed under no-load
conditions). To perform accurate measurements, perform zero ad-
justment.
To perform even more accurate measurements, with no load con-
nected, wait 30 minutes after you turn the POWER switch on, and
then perform zero adjustment.
1
Turn on the POWER switches on all PCR-LEs.
2
Configure the master unit as follows:
Output voltage mode: AC
Output voltage range: The desired range
AC voltage: 0 V
3
Turn on the output.
4
Press CONFIG (SHIFT+OPR MODE), 1/2 (F6), and
then CURR ADJ (F5). Press the START (F1) key.
Zero adjustment starts.
When the zero adjustment is complete, "Measure Current
ZERO Adjustment Finished" appears.
5
Press the OK (F4) key to end zero adjustment.
To adjust a different output voltage range, turn off the out-
put, change the output voltage range, and then repeat
steps 3 to 5.
Once a zero adjustment is performed, as long as you do not
change the connection, the PCR-LE remembers the calibration val-
ues for the master-slave parallel operation even when you turn off
the POWER switch. If the ambient temperature changes, perform
zero adjustment.
