Instruction Manual

6.3. PARALLEL OPERATION (MASTER /

SLAVE CONTROL)

Two or more units of the same model can be hooked up in

parallel to give an increase in output current capacity. The total

output current capacity will be the sum of the output currents of

the individual units. In this mode of operation, one supply will

act as the master and all settings are from the master unit

• Note: When connecting the supplies in parallel, be sure that

all the power supplies are turned OFF.

• HOOK-UP PROCEDURES

1. Switch OFF the power of all units.

2. Switch the master/slave switch, FIG.6.3, on all the slave

units from “MASTER” to “SLAVE” position.

3. Hook-up the IN/OUT terminals for MASTER/SLAVE

operation as shown in FIG.6.3.

4. Connect the output terminals of each of the units to the

load as shown in FIG.6.4. For proper performance, use

all cables of same length and thickness.

5. Set the voltage and current adjustment knobs of all the

slave units to the maximum position.

6. Switch “ON” the MASTER unit and SLAVE units.

The output voltage and current then can be

controlled to the desired value via the adjustment

knobs on the MASTER unit.

In the case of output goes to “0” ampere in the

parallel operation mode, output voltage can no

longer be controlled by the master machine.

Be sure to keep a minimum current flowing that is at

least several percent of the rated current at all time.

• CONNECTION OF TERMINAL ON REAR

PANEL

While pressing on the slit portion of the terminal with a

small screw driver, insert the connecting cable into the

round hole. When insertion is completed, release the

screw driver. (FIG.6.5)