User manual
57
c) Control through a controllable resistance (poti)
The power unit can be remote-controlled with an external poti (5 Kohm) throughout the range for
voltage and current.
Proceed as follows for connection:
Connect the connecting cables of the remote sockets as illustrated.
Voltage setting “V”
• Connection 1 at one end of the
resistance.
• Connection 2 at the centre sliding contact
of the resistance.
• Connection 4 at the second end of the
resistance.
Current setting “I“:
• Connection 1 at one end of the
resistance.
• Connection 3 at the centre sliding
contact of the resistance.
• Connection 4 at the second end of the
resitance.
Connections 1 and 4 must not be short-circuited.
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. Switch on the power unit.
3. Put the selection switch MODE (8) on the rear into the Remote Ctrl
position. The control indicator REAR CONTROL (2) is lit.
4. The desired output values can now be set through the external poti.
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.