Connection Lines Between Control Panel And External Operating Units; Voltage Supply (24 V) - Siemens AlgoRex CS1140 Planning

17.3 Connection lines between control panel and external operating
units
Control
terminal
AlgoPilot
B3Q...
2..11 leads
Application
24 V supply as of control panel EN54
satisfied
24 V supply as of control panel without
degraded mode and emergency supply
Autonomous power supply EN54 satis-
fied
Autonomous power supply without de-
graded mode and emergency supply
17.4

Voltage supply (24 V)

Building Technologies
Fire Safety & Security Products
Options:
B3Q321 (Fire department control terminal)
B3R051 (Parallel indicators)
E3I040 (LON interface)
Printer, PSA/Pager
max. 1000m per Loop with
max. 1400m per Loop with
Control unit CC11/CI11
When planning a system, the following condition must be observed:
At least one operating unit must satisfy the EN54 standard, i.e. be equipped with
degraded mode and emergency supply.
EN54 requirements:
Communication as loop line

Operation even during degraded mode –>

operation
Second disconnected 24 V supply

The number of wires in the connection cable depends on usage and the distances
between the stations:
Is the operating unit supplied with 24 V by the control panel or autonomously?

Is an emergency supply according to EN54 also managed?

Is the degraded mode path (emergency operation) also managed?

C bus 24 V supply
●
(2 wires) (3 wires)
●
(2 wires) (3 wires)
●
(2 wires)
●
(2 wires)
Notes:
Degraded mode path also needed between CPUs or to a remote gateway
–
Degraded mode path and emergency supply are not designed as loop line
–
Emergency supply via separate cable or C bus return
–
The AlgoPilot B3Q... operating units are designed for the 20..30 V DC voltage

range
The maximum current at 24 V is 400 mA

Max. lengths of line (approximate values):

With cable of ø 0.8 mm
–
With cable cross-section of 1 mm
–
The power requirement for the options (fire brigade operating unit, parallel dis-

play, printer, PSA/pager, LON plug-in unit) must also be taken into account
Loop C-Bus
ø 0,6mm G51 (incl. return line)
ø 0,8mm G51 (incl. return line)
–> design C bus as loop line
–> 3 extra wires or autonomous
supply
Emergency
power supply
● ●
(3 wires)
●
–> 180 m
2
–> 360 m
AlgoPilot B3Q... operating terminal
Control
terminal
AlgoPilot
B3Q...
3 extra wires for emergency
Degraded mode Number of wires
path
●
(3 wires)
●
(3 wires)
008725_h_en_--
11
5
5
2
53
06.2011