40
EN
Instruction Manual
PS 8000 DT Series
Date: 03-05-2016
Operating the device
Output off
Pin „REM-SB“ is always operative and does not depend on the
remote control mode. It can be used to switch off the output
without extra means, except in LOCAL mode which only allows
manual control for the device. Switching the output off is done by
connecting the pin to ground (DGND) via a low-resistive contact
like a switch, open collector transistor or relay.
Note
A digital output of, for example, a PLC may not be able to do
this correctly, because it might not be low-resistive enough.
Always check the technical specifications of your external
control application.
+
Remote control of current and voltage
Two potentiometers between VREF and ground, sliders at the
inputs VSEL and CSEL. The power supply can be controlled
as with the rotary knobs on the front and can either operate as
current or voltage source. In compliance with the max. 3 mA
for the VREF output, potentiometers with at least 10 kOhm
have to be used.
The power set value is here, for models with power regulation
feature, tied to VREF and thus 100%.
or
Remote control with power
Similar to the example above, but with adjustable power limit
(only applicable for models with power adjustment).
10.2 Application examples
Pin overview
Attention!
Never connect grounds of the analogue interface to mi-
nus (negative) output of an external control application
(PLC, for example), if that control application is otherwise
connected to the negative power supply output (ground
loop). Load current may flow over the control leads and
damage the device!
Figure 6
Figure 7