Siemens FC700A Hardware Description page 18

Emergency operation
18
Siemens Building Technologies
Fire & Security Products
The number of wires in the connection cable depends on the application:
a) Are control consoles supplied from the control unit with 24V?
b) Is an emergency power supply also provided according to EN54?
c) Is the emergency operation circuit also provided?
Application
24V supply from control unit
Complies with EN54
24V supply from control unit
without emergency opera-
tion / emergency power
supply
Note:
– Emergency operation circuit also required between other CPUs
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
–
C-Bus 24V supply
X (2 wires) X (3 wires)
X (2 wires) X (3 wires)
Emergency Emergency
supply operation
circuit
X (2 wires) X (3 wires)
- -
007831_a_en_--.doc
Number of
wires
10
5
03.2004