User manual
56
b) Control through external voltage source
The power unit can be remote-controlled with an external voltage source from 0 to 5 V/DC throughout
the range for voltage and current.
Proceed as follows for connection:
Connect the connecting cables of the remote sockets as illustrated:
V
Voltage setting “V”
• Connection 2 to the plus pole (+) of the
external control voltage.
• Connection 4 to the minus pole (-) of the
external control voltage.
Current setting “I“:
• Connection 3 to the plus pole (+) of the
external control volltage.
• Connection 4 to the minus pole (-) of
the external control volltage
The voltage on the remote control connection must not exceed 5 V.
The connections must not be shorted.
1. Switch off the power unit and then connect the remote socket to the
remote control terminal Remote Control. Screw on the external
fastening ring.
2. Turn the voltage of the external voltage source to 0 V.
3. Switch on the power unit.
4. Put the selection switch MODE (8) on the rear into the Remote Ctrl
position. The control indicator REAR CONTROL (2) is lit.
5. The desired output value can now be set through the external voltage
source. Control the complete adjustment area for correct function. The
output voltage can be monitored in the display.
Short-circuit the rear terminals MAIN OUTPUT (7) with a sufciently thick cable for checking
the current control (at least 8 mm
2
). Check the entire setting for proper operation.
If this remote control function is no longer required, put the selection switch MODE (8) to the Normal
position.