Connections
● Connecting terminal for relay output
“Pre-alarm”
; max.: 30 V /
0.5 A / ohmic load
1)
● Connecting terminal for relay output
“Fire alarm”
; max.: 30 V /
0.5 A / ohmic load
1)
● Connecting terminal for relay output
“Extinguishing”
; max.:
30 V / 0.5 A / ohmic load
1)
● Connecting terminal for relay output
“Common failure”
; max.:
30 V / 0.5 A / ohmic load
1)
● Plug (RJ12) for door contact switch connection
● Door contact plug 2
● 3
×
(RJ12) connection plugs to Rittal CMC I/O Unit (failure, main
alarm, pre-alarm)
● 2
×
CAN connection for networking
● External alarm equipment, maximum 500 mA
● Connection of external fill level monitoring and triggering of
external tank (only EFD III), max. 500 mA
● Manual call point plug
● Power supply (UB), max. 500 mA
● USB port (type B)
● CAN bus for networking to the various Rittal monitoring systems
1)
Chapter 6.3.1 “Potential-free contacts” on page 52
Displays
● 1 display with plain text display of state messages
● 1 green “Operation” LED
● 1 yellow “Shutdown” LED
● 1 red “Extinguishing system triggered” LED
● 1 red “Extinguishing system released” LED
● 1 yellow “Blocked” LED
● 1 yellow “Failure” LED
Sensor system
(2 different scattered
light sensors for 2 alarm
thresholds)
● Optical fire detector LS
(sensitivity: approx. 2.73 %/m light obscuration)
● Optical fire detector HS (HS = highly sensitive)
(sensitivity: approx. 0.34 %/m light obscuration)
Suction pipe
Adhesive-free connector system, black (outer diameter: 22 mm,
inner diameter: 18 mm)
Suction bores
Chapter 6.2.5.1 “Establishing the suction bores” on page 44
Air flow monitoring
Approx. +/-10 % of the total air flow current
Protection volume
Maximum 2.8 m
3
(98.9 ft
3
)
the protection volume must not exhibit any recognizable openings
Technical data
Operating Instructions / DET-AC III Master / 916005 / 11-2022 / en_US
121
