Bus Connection; Input Connection; Technical Characteristics - urmet domus 1067 Quick Start Manual

BUS CONNECTION

Expansion can be connected on bus in a cascade, star or mixed way. Expansion position along bus is not
important. The overall length of all bus sections must not exceed 400 metres.
Connect expansion to bus using pins +, +D, D and ─.
For wiring, use 4 lead screened cable (2 leads for power supply and 2 leads for data connection). In
counting out overall system absorption, also consider max consumption in expansion and expansion-
connected devices.

INPUT CONNECTION

Connect sensors and detectors to inputs IN1 ÷ IN8. Inputs can be programmed one by one as NC, NO,
Balanced and Double-balanced.
Each input can manage fast signals from seismic detectors or rolling shutters.
To implement connections with balancing, use provided 2.7 kΩ resistances with 1% tolerance.
NOTE: The SAB input is always treaded as double balanced.
WARNING: "Double balance" is the only EN50131 compliant connection mode. Refer to the manuals of the
control units for further, more detailed information.

TECHNICAL CHARACTERISTICS

Nominal power voltage (taken from control panel by Bus)............................................................... 13.8 Vdc
Expansion operating voltage ................................................................................................. 9 Vdc ÷ 15 Vdc
Current draw at 12 Vdc:
stand-by (with energised relay, default condition). ........................................................................... 30 mA
with relay de-energised .................................................................................................................... 18 mA
Max. current deliverable from terminal +V1 ....................................................................................... 500 mA
Max. total current deliverable from terminals +V2 ............................................................................. 500 mA
Dimensions (WxHxD) ......................................................................................................... 89 x 75 x 14 mm
DS1067-005B
EN50131
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