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Chapter 4 Parallel/Series Operation
Settings (Master-Slave Parallel Operation)
Setting the Master Unit, the Slave Units, and the Number of Units
in Parallel Operation (Including the Master Unit)
Turn the output off, and then configure the master unit (CF01: 2 to 4) and the slave units (CF01:
SLAV) in master-slave parallel operation. On the master unit, set the number of units in
master-slave parallel operation (CF01: 2 to 4). By factory default, the RMX programmable
power supply is set to independent operation (CF01: 1).
Turn the POWER switch off and on to enable the setting. Be sure to set the number of units in
master-slave parallel operation (CF01) to the actual number of units that are connected. If this
parameter is incorrect, settings such as those for the current and the overcurrent protection
(OCP) cannot be set correctly, and the measured current will not be displayed correctly.
Setting the Voltage and Current
Use the master unit to set the voltage and current. The current that is output is the sum of the
currents of the master unit and the slave units. When you set the number of units in master-slave
parallel operation (CF01), the maximum output current (105% of the rated output current of a
single unit × the number of units in parallel) is set. If you switch to the setting display (when the
SET key is lit), this value is displayed. The last voltage that was set on the master unit is used.
When you press OUTPUT, the set voltage and current are output. You can set the voltage and
current to any values.
Setting the Overvoltage Protection (OVP) and Overcurrent
Protection (OCP) of the Master Unit
When you are performing master-slave parallel operation, set the overvoltage protection (OVP)
and overcurrent protection (OCP) of the master unit. When you set the number of units in
master-slave parallel operation (CF01), the maximum overcurrent protection value (112% of the
rated output current of a single unit × the number of units in parallel) is set. If you switch to the
OVP/OCP setting display (when the OCP•OVP key is lit), this value is displayed. The last
overvoltage protection value that was set on the master unit is used.
Table 4-1. CONFIG Parameters for Master Units
Parameter Description
CF00 Resets the panel settings
CF02 Power-on status parameter
CF04 Memory content display parameter
CF05 CC control using an Vext or Rext
CF06 CV control using an Vext or Rext
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