The BX-IM4 can be connected to the SecuriLine eXtended ring
circuit of the SecuriFire fire detection systems.
The BX-IM4 has four primary inputs for polling potential-free
contacts. These inputs monitor the lines for creeping wire
breakage and short-circuit.
The “monitored” or “not monitored” operation mode is separately
planned for each input; further, each input can also be programmed inverted.
Addressing and assigning BX-IM4 parameters are performed
with PC software via the fire alarm control panel.
The BX-IM4 includes a short-circuit isolator. In the event of wire
breakage or short-circuit, this functionality ensures that the fault
is localized and that operation of the ring circuit remains fully
functional.
Type: BX-IM4
Operating voltage: 12 to 30 VDC
Current consumption: 0.45 mA
Signal transmission: Serial data transmission, 2-conductor technology
Protection type: 66 with housing IP
Ambient temperature: -20 to +60 °C
Dimensions (H x W x D): 67 x 67 x 20 mm
Connection: Plug-in screw terminals, max. 1.5 mm2
VdS approval: G 210131
EU certificate of conformity (EN 54-17/18): 0786-CPD-21009
Monitored / unmonitored inputs
Connection: potential-free contacts
Termination resistance
for monitored input: 180 Ω
for unmonitored input: not applicable
Alarm resistance
for monitored input: 180 Ω
for unmonitored input: < 1 Ω
Polling voltage: 3–6 V
Line resistance: max.30 Ω
Line length: max. 30 m