User Manual VS2k-UMB / VS20k-UMB
V 2.3 / 28.01.2020
8
Chapter 6 Connections
6 Connections
6.1 Screw-in connector
There is an 8-pole screw-in connector on the underside of the device. It serves to connect
the power supply and the interfaces using the corresponding connection cable.
1 .... white ..... negative power supply
2 .... brown ... positive power supply
3 .... green .... RS485_A
4 .... yellow ... RS485_B
5 .... grey ...... not assigned
6 .... pink....... not assigned
7 .... blue ...... current output (-)
8 .... red ........ current output (+)
The cable marking is in accordance with DIN 47100
The screening of the connection cable must NOT be laid to earth in the control
cabinet!
If the equipment is not connected correctly
-
It may not function
-
It may be permanently damaged
-
You may risk an electric shock
6.2 Power supply
The VS2k-UMB / VS20k-UMB is powered by 24VDC. The power supply unit must be
approved for operation with equipment of protection class III (SELV).
6.3 RS485 interface
The device has a DC-isolated half-duplex 2-wire RS485 interface with the following settings:
Data bits: ............................ 8
Stop bit: .............................. 1
Parity: ................................. none
Settable baud rates: ........... 1200, 2400, 4800, 9600, 14400, 19200*, 28800, 57600
* = factory setting and baud rate for firmware update
6.4 Current output
The current output is DC-isolated and can be configured as follows:
off ................... the output transmits 0 mA
4 ... 20 mA* .... the output transmits the visibility in accordance with the configuration
20 ... 4 mA ...... inverts the visibility output
In case of a fault on the device the fault current indicated during configuration is transmitted.
The load resistance on the current output must be less than 300 Ohms.
