CM2N3205E / 05.2001
Siemens Building Technologies
16/18
Landis & Staefa Division
Fire/
smoke
Flow/
faults
Overloaded
circulation pump
Overloaded
air heater
A
B
B
A
Chiller
Water
Water
A
B
Electr.
B
Electr.
A
A
B
A
B
A
B
A
B
A
B
A
B
Overloaded
fan
A
B
A
B
AUX 1
A
B
A
B
AUX 2
A
B
Frost protection
unit
Dark
Off/interlocked
Lit
Flashing
Off/interlocked (switch-off delayed)
On/delocked
On/delocked when Y10
≥
0 %
Off/interlocked when Y10
≥
0 %
Dark (Y10
≥
0 %)
I/O
Explanation
Q13
Q14
Q23
Q24
Y10
Y20
Y30
Q20
F91
F92
Green
LED
E1
E2
E3
E4
E5
E7
E8
B9
3205Z18E
Water
Water
Eletrc.
Electr.
Water
Water
Electr.
Electr.
Red
LED
Water
Water
Electr.
Electr.
Water
Water
Electr.
Electr.
Water
Water
Electr.
Electr.
Water
Water
Electr.
Electr.
Water
Water
Fault
reaction
Heating
source
Function flow
diagrams for fault
status signals
Incoming fault status
signals