Basic Documentation

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Siemens Universal controllers RMU710B, RMU720B, RMU730B CE1P3150en
Building Technologies Aggregates 03.10.2011
10.2.13 Behavior in case of pump fault at low outside
temperatures
If the plant is to be switched off at pump fault and simultaneously low outside
temperatures, but continue to run at higher outside temperatures although the
related pump is at out of service due to fault, setting parameter "(Fault) plant stop
OT <" allows to do just that.
Main menu > Commissioning > Settings > .... or
Main menu > Settings > Aggregates > Pump 1...4
Operating line Range Factory setting
(Fault) plant stop OT < ----, -50...+250 °C ----
This setting is only valid with the pump setting "Load-dependent ON".
10.2.14 Pump kick
To prevent the pumps from seizing during longer off periods (e.g. heating group in
summer), a periodic pump kick can be activated for each pump block. When pump
kick is active, the pumps are switched on for 30 seconds once a week regardless
of any other functions and settings. The pump kick is activated by setting "Pump
kick" to "Yes". If the setting is "No", there is no pump kick. In addition, a kick day
and time can be set. With the pump kick, the precommand output with its settable
times is activated prior to the actual pump start. All other delay times are inactive.
With twin pumps, both motors are switched on alternately.
Main menu > Commissioning > Settings > .... or
Main menu > Settings > Aggregates > Pump 1...4 >
Operating line Range Factory setting
Pump kick Yes, No No
Kick day Monday, Tuesday,
Wednesday, Thursday,
Friday, Saturday, Sunday
Monday
Kick time 00:00...23:59 h.m 10:00 h.m
10.2.15 Function check / wiring test
The current state of the pump is displayed on the operator unit.
Main menu > Aggregates > Pump 1…4
Operating line Comments
Precommand
Pump APump B
Display of present state:
Off, On
Precommand
Pump A
Pump B
Display of present state:
Off, On
Precommand
Pump A
Pump B
Display of present state:
Off, On
Precommand
Pump A
Pump B
Display of present state:
Off, On
Setting values
Note
Setting values
Display values