Emergency operation
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Building Technologies 001260_k_en_--.doc
Fire Safety & Security Products 02.2005
4.5 General requirements
At least one control console per system must comply with standard EN54, i.e.
must have Emergency operation capability and Emergency power supply.
Emergency power supply
z This consists of a second supply circuit to stations located elsewhere
z For this purpose the AlgoPilot control console has 2 de-coupled supply inputs
4.6 Wiring principle
Supply circuit 2
(Emergency supply)
Supply circuit 1
C-Bus return line, Note 1
Emergency operation circuit
C-Bus
K5
Terminal block X16
A1/B1
K7 K6
A2/B2
A1/B1A2/B2
K5 K5
AlgoPilot B3Q... AlgoPilot B3Q... Al
oPilot B3Q...
K7 K6 A1/B1A2/B2 K7 K6 A1/B1A2/B2
E3X10. (CPU)
Note 1 C-Bus loop line = max. 1000 m (at G51 Ø0.6mm) incl. return line or, max. 1400 m at G51 Ø0.8 mm
Two requirements must be met for control consoles located elsewhere. At least
one control console must comply with standard EN54 (i.e. have emergency opera-
tion capability and emergency supply).
EN54 requirements:
– Communication as loop line (=C-Bus designed as loop line)
– Operation also in emergency mode (=3 additional wires for emergency
operation between CPU and control consoles)
– second de-coupled 24 V supply (=3 additional wires if there is no
autonomous power supply)
The number of wires in the connection cable depends on the application:
a) Are control consoles supplied from the control unit or autonomously with 24V?
b) Is an emergency power supply also provided according to EN54?
c) Is the emergency operation circuit also provided?
Application C-Bus 24 V supply Emergency
supply
Emergency op-
eration circuit
Number of wires
24V supply from control unit
Complies with EN54
X (2 wires) X (3 wires) X (2 wires) X (3 wires) 10
24V supply from control unit
without emergency operation / emer-
gency power supply
X (2 wires) X (3 wires) – – 5
autonomous power supply
Complies with EN54
X (2 wires) – – X (3 wires) 5
autonomous power supply
without emergency operation / emer-
gency power supply
X (2 wires) – – – 2
Note:
– Emergency operation circuit also required between other CPUs or to a separate Gateway
– Emergency operation circuit and the emergency power supply are not laid out as a loop line
– Route emergency power supply in a separate cable or in the C-Bus cable feedback
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