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ABB i-bus® KNX
Inputs

Binary Inputs, 10 – 230 V AC/DC, MDRC
Detects AC/DC signals in the voltage range from 12...230 V. The state of the input is
displayed via yellow LEDs. The binary inputs enable detection of independent input signals.
The devices feature a manual operation pushbutton for each channel. The devices are pow-
ered via the ABB i-bus® and do not require an additional power supply.

Description Mod. Order details Price Weight Pack
BE/S 8.230.2.1 width 1 piece 1 piece unit
Type code Order code kg pc.
4-fold 2 BE/S 4.230.2.1 2CDG110091R0011 0.12 1
8-fold 4 BE/S 8.230.2.1 2CDG110093R0011 0.23 1

Binary Inputs, Contact Scanning, MDRC
Scans floating contacts with internally generated scanning voltage. The state of the input is
displayed via yellow LEDs. The binary inputs enable detection of independent input signals.
The devices feature a manual operation pushbutton for each channel. The devices are
powered via the ABB i-bus® and do not require an additional power supply.

Description Mod. Order details Price Weight Pack
width 1 piece 1 piece unit
BE/S 4.20.2.1 Type code Order code kg pc.
4-fold 2 BE/S 4.20.2.1 2CDG110090R0011 0.12 1
8-fold 4 BE/S 8.20.2.1 2CDG110092R0011 0.23 1

Universal Interface, FM
The universal interface has 2, 4 or 12 channels which can be parametrised as inputs or out-
puts with the ETS software. Conventional push-buttons, auxiliary contacts, LEDs and the
electronic relay ER/U can be connected. The connecting cables can be extended up to 10 m.
The contact scanning voltage and the supply voltage for the LEDs are made available by 14
the device, the series resistors for the LEDs are integrated.

Description Mod. Order details Price Weight Pack
width 1 piece 1 piece unit
Type code Order code kg pc.
US/U 4.2
2-fold – US/U 2.2 GHQ6310074R0111 0.06 1
4-fold – US/U 4.2 GHQ6310070R0111 0.06 1
12-fold – US/U 12.2 2CDG110065R0011 0.06 1