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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 rear
remote connection. Screw on the external fastening ring.
2. Switch on the power unit.
3. Put the MODE switch (8) on the rear into the “Remote Ctrl” position. The
“REAR CONTROL” display 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 main output (7) with a sufficiently 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 MODE switch (8) to the “Normal”
position.
