Appendix
Operating instructions RLD 117
ELTROPLAN
-
REVCON
Elektrotechnische Anlagen GmbH
s
4.
Overvoltage-suppressor
If the power feedback unit (as well as a controller) is connected to ungrounded mains sup-
ply, it only may be run, either if it is connected via an isolating transformer or if the plant
is protected by overvoltage suppressors. But also with grounded mains supply it may be
useful to install overvoltage suppressors, if it is possible, that voltage peaks occur. For
choosing the best overvoltage suppressor for your specific application, please get in con-
tact with one of our technicians.
5.
RFI-filter
For technical data concerning the RFI-filter refer to chapter 3.3.4 (type overview), 4.2.2
(dimensions) and 4.6.2 (connection).
6.
External operating an signalling panel
When mounting the device inside a cabinet it is possible to mount an operator panel in the
door of the cabinet by using the external operating and signalling panel. The external oper-
ating and signalling panel contains the complete display (LED’s) of all running and failure
messages of the power feedback unit and also the ON / RESET push button switch.
The connection to the power feedback unit has to be done with a (shielded) flat cable to the
socket X4 of the control board (refer to figure 4.4.4.1).
Note!
The connection of the external operating and signalling panel to the power feedback unit has no
influence on the operating and error messages of the LED’s placed on the control board. In this
case both displays are active on the same time.
In case of simultaneous usage of the external operating and signalling panel and the ON/OFF
function via the control terminal X2 the switch off signal always has priority, independent of the
ON-RESET push button switch.
Stop!
Don’t put an external voltage to the socket X4 of the control board or to the external operating
and signalling panel. This may damage the device.
STOP
