Electrical connections LOCON 24, 48, 64
Deutschmann Automation GmbH & Co. KG
22
Instruction manual LOCON 24, 48, 64 , LTC, TERM 24 and TERM 6 V. 8.8
24.7.12
Free-wheeling diodes must be provided directly on the inductors if switch-
ing inductors (coils and valves) (see chapter 'EMC Directives').
3.5.4
Connection of the serial RS232 interface
The RS232 interface is connected via the connectors X5 or X7.
When connecting, please ensure that the TxD and RxD signals of LOCON and the connected
unit are reversed (e.g.: Connect TxD LOCON to RxD PC) and that the "GND" reference poten-
tials of both units are connected.
3.5.4.1
Interface-switch
The interface-switch is located under the sticker with the print RS232/RS485. In the state of
delivery the position of the switch is indicated by the mark on the sticker. The position of the
requested interface can be seen from the sticker at the back of the device.
For switching please use a suitable tool and carefully shift the microswitch to the left or the right.
Attach a new sticker with the corresponding mark.
3.5.5
Connection of the DICNET bus interface
The DICNET bus (see chapter "DICNET") is connected via the connectors X or X7.
All "" signals are interconnected and all "DICNET-" signals are interconnected on the
bus. The signals are not reversed.
However, it must be ensured that the potential differences between the DICNET users do not
exceed 7 V.
Please always follow the information in chapter DICNET!
3.5.6
Connection of the floating fault alarm contact
Signals "RunOn", "RunOff" and "RunCommon" are the three changeover contacts of a relay,
whereby "RunCommon" is the common connection, "RunOn" is the make contact and "RunOff"
is the break contact.
If LOCON is operating correctly, the make contact "RunOn" is connected to "RunCommon". In
the event of a serious error (errors 1..19, 31, 100..199), the relay drops out and there is no con-
nection between "RunOff" and "RunCommon".
Thus, using a relay provides a floating contact for monitoring the LOCON which may thus also be
connected in series with other units.
After power-up, the optional relay remains in "RunOff" state until the
LOCON has completed its self-test and is ready for operation.
