MSA SUPREMA Touch, Инструкция по установке и обслуживанию, Страница: 271 / 309

SUPREMA 270
SUPREMA Sensor Data Sheets
MSA
US
15.6 SUPREMA Sensor Data Sheet Explosion-proof
Push-Button Detector with Barrier Z 787
Fig. 185
The cable screen is only connected to the SUPREMA.
*1 Connect push-button detector according to manufacturer’s specification; MEDC NG16 6JF
Type BGI
WIRING DIAGRAM BGE/I/W + PBE/IW
Contact type: NORMALLY OPEN (terminal 2–3 inside the detector)
Carry out installation according to NFPA 72
With resistor 2.2 KOhms / 0.5 W in series with the contact; max. 10 Pieces
With zener diode 10 V / 1.3 W in series with the contact; max. 20 Pieces
Check polarity
*2 End of Line Resistor 2K2 / 0.5 W to be mounted in the last mounting support of the detection
zone circuit or in the portable detector according to the documents specified under *1.
*3 Indication of leakage current. In the case of failure, the „OPEN COLLECTOR“ transistor is
conducting to terminal 5
Connection module: MFI (Fire Input Module)
Configuration: Internal power supply, without Zener barrier.
(Switch position S101: 1 + 2 = OFF, 3 + 4 = ON)
Set potentiometer P101 to left position
Connection
data:
Maximum nominal current 42 mA
Maximum nominal voltage 22 V
Power consumption
≤
1.5 W (including cable length)
Cable type 2-core, 80 % screened
Maximum loop resistance 50 ohms (cable resistance)
Maximum cable length 2000 m (1.5 mm
2
cross section per wire)
Cross section per wire allowed 0.5 ... 2.5 mm
2