MBS UBR-01 | Mk II
Installation
16 von 46
Warning
Electric shock injury hazard and damage to device!
Connecting the device to deviating, excessively high supply
voltages may lead to serious injuries or death.
The device is operated exclusively with Protective Extra-Low
Voltage. No supply voltages that deviate from the connection
values specified in the
Specifications and connected
loads may
be used.
The device is supplied with a reverse polarity protected plug that is
already pre-assembled in the [PWR] socket. To connect the supply lines,
it is recommended to remove the plug. The cable cores are connected
and screwed according to the marking [+24 / GND].
RS485 Bias voltage
The bias voltage for the RS485 interface is switched with the DIP
switches
S1
and
S2
. The bias voltage is active when they are
both
set
to the ON position. The default setting for all DIP switches is OFF.
Notice
Switches
S1
and
S2
must always be switched
together
to avoid
transmission interference on the MS/TP bus.
RS485 Bias termination
S3
provides a switchable 120 Ohm terminating resistor that terminates
the end of a segment in an MS/TP network. Termination may only be
done when the device is at the end of such a network segment.
