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Siemens Switzerland Ltd
User manual RVS61.843 CE1U2355en_02
HVAC Products 6 The settings in detail 23. November 2007
• Example of room temperature 10V
Tr [°C]
U
2
=10VU1=0V
F
1
=0
0.15V
F
2
=100
Hx [V]
Tr Room temperature
Hx Voltage value at Hx
U1 Voltage value 1
F1 Function value 1
U2 Voltage value 2
F2 Function value 2
If the measured value is below 0.15 V, it is regarded invalid and an error message is
delivered.
Input EX1, EX2, EX3, EX4, EX5, EX6, EX7
This operating line is used to define the function of inputs Ex (230 V).
Line no. Operating line
5980
5982
5984
5986
5988
5990
5992
Function input EX1, EX2, EX3, EX4, EX5, EX6, EX7
None
Electrical utility lock E6
Low tariff E5
Compressor 2 overload E11
Source overload E14
Pressure switch source E26
Flow switch source E15
Flow switch consumer E24
Manual defrost E17
Common fault HP
Fault soft starter
3-phase current (only with Ex 5 ... Ex7)
None
Activation of input Ex has no impact.
Electrical utility lock
Accepts an external locking signal (e.g. from the electrical utiliy) for the heat pump and
locks it. If, in the case of air-to-water heat pumps, locking occurs during defrost, the
controller completes the defrost process before locking the heat pump.
Low tariff
The low tariff signal delivered by the electrical utility can be routed via an Ex input. As
soon as the input is activated, forced charging of the storage tanks is triggered.
The point in time for forced storage tank charging can also be set as a fixed time on
operating lines 4711 and 4712.
Overload compressor 2
Takes the overload message from compressor 2 and shuts it down.
If overload protection responds several times within the preset “Duration error
repetition”, the heat pump initiates lockout and must be manually reset to resume
operation.
When the compressor is started, no consideration is given to overload protection for 3
seconds.
Function input EX1,
EX2, EX3, EX4, EX5,
EX6, EX7
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