NOHMI BOSAI FRRU004-GSCU Gas Suppression Control Unit

Manufacturer: NOHMI BOSAI
Model: FRRU004-GSCU

Features of FRRU004-GSCU

The FRRU004-GSCU module functions as a control unit for gas suppression systems. The gas can be discharged either automatically or manually. The FRRU004-GSCU monitors the manual release switch, abort switch status, counts down to gas discharge, controls output devices, and displays the gas discharge status.Additionally, the FRRU004-GSCU has a changeover switch that allows you to select between “Auto & Manual” or “Manual Only” modes. The system continuously supervises the wiring connected to terminals NAC1, NAC2, and DI for open or short circuits, while also ensuring the presence of 24VDC power.

No.	Item	Specification
1	Rated voltage range of SLC input power (S+, S-)	22.0 to 24.0 V
2	Maximum SLC 24 VDC standby current (S+, S-)	250 µA
3	Maximum SLC 24 VDC alarm current (S+, S-)	250 µA
4	Operating voltage of external power supply line (24+,24-)	24 VDC
5	Rating for NAC1 and NAC2	1.5 A per circuit
6	Rating for DI	1.0 A
7	Rating for total of NAC1, NAC2, and DI	3.0 A for three circuits
8	Rating for contact output	2.0 A
9	Contact output style	Typical Form C
10	Consumption current of the board at standby	80 mA
11	Consumption current of the board at alarm	150 mA
12	Wiring style for NAC1, NAC2 and DI	NFPA Class B
13	End-of-line resistor for NAC1, NAC2, and DI	5.1kΩ, 1/2W
14	Maximum wiring resistance of output circuit wiring	Refer to Wiring diagram
15	Maximum wiring capacitance of NAC1, NAC2 and DI circuit wiring	1 µF
16	Operating temperature range	0 to 49°C (32°F to 120°F)
17	Operating humidity range	0 to 93% (non-condensing)
18	Address per module	2 addresses
19	Maximum number of modules per FACP	14 units
20	Dimensions	145 mm (5.71″) (H) × 200 mm (7.87″) (W) × 57 mm (2.24″) (D)