Siemens Building Technologies
CM2N3205E / 05.2001
Landis & Staefa Division
7/18
The RW165.01 can acquire and process nine fault status signals from plant elements
and plant statuses. When the front door is closed, the signals are shown in lines 9 and
10 of the display as follows:
I
E7
E4
E1
E2
E5
B9
E3
∆
p
10
9
A 0 b 0
3205Z07
1 1 0
1
2
3
4
6
5
7
E8
8
9
1
Frost danger supervision (signal input B9),
Display: 0 = normal, A or b = frost alarm.
2
Flow supervision (signal input B9)
Display: 0 = normal, 1 = start phase, A or b = flow fault.
3
Overload of refrigeration machine or chilled water circuit pump (signal input E4)
Display: 0 = Q20 cooling switched off, 1 = Q20 cooling switched on,
A or b = cooling fault.
4
Open usage e.g. for filter supervision (signal input E7)
Display: 0 = normal, 1 = start phase, A or b = fault at E7.
5
Overload/overheating of circulating pump or air heater battery (signal input E3),
Display: 0 = Q13 / Q14 heater switched off, 1 = Q13 / Q14 heater switched on,
A or b = pump or air heater battery fault.
6
Overload fan (signal input E5),
Display: 0 = Q23 fan switched off, 1 = Q23 fan switched on,
A or b = fan fault.
7
Fire/ smoke supervision (signal input E1),
Display: 0 = normal, A or b = fire / smoke alarm.
8
Open usage (signal input E8),
Display: 0 = normal, 1 = start phase, A or b = fault at E8.
9
Heat recovery equipment efficiency supervision (signal input Z3)
Display: no pointer = normal, visible pointer = efficiency is below the set alarm threshold
Depending on priority, fault status signals are indicated by a flashing "A" or "b" in the
display (with efficiency supervision using pointer) and by a flashing red LED located on
the acknowledge button on the unit front. At the same time, it is available as a
centralized alarm at centralized alarm output F91 (priority A) or F 92 (priority b).
Fault status signal priorities (A or b) can be selected for inputs E1 to E5, E7, E8, B9 and
Z3.
Status signal inputs E1 to E8 can be individually adapted to the contact state of the
corresponding status signal element (normally closed or normally open).
Alarm delays to avoid false alarms can be selected for status signal inputs E2 and E7.
Any fault displayed can be acknowledged from the acknowledgment button on the unit
front. When a fault is acknowledged, the priority display changes from flashing to steady
and the centralized fault status signal at centralized alarm output F … is cancelled.
The display of a priority "b" fault status signal goes out when the signal is no longer
present at the fault status signal input. When no other fault status signal is present at
the fault status signal inputs, the display in the acknowledgment button changes from
red to green.
The fault status signal indications (display and acknowledgment button) for a priority "A"
fault can be cancelled by pushing the acknowledgment button again, as long as no
other fault status signals with priority "A" are present.
The function flow diagrams at the end of this data sheet show how the fault status
signals affect the RWI65 outputs.
Fault status signals
and indication
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Legend
Acknowledging the fault
status signal
