Basic Documentation

115/332
Siemens Universal controllers RMU710B, RMU720B, RMU730B CE1P3150en
Building Technologies Aggregates 03.10.2011
10.2.7 Overload signal (
AB
)
Here, e.g. overload supervision of a motor protection switch can be connected.
Main menu > Commissioning > Extra configuration > Aggregates > Pumps > Pump 1...4 >
Operating line Adjustable values / remarks
[Pump A] overload ---, N.X1, N.X2, ... (digital inputs only)
[Pump B] overload ---, N.X1, N.X2, ... (digital inputs only)
The overload message [Pump A] overload" is sent for 1-speed pumps.
For the overload signal, fault acknowledgement can be set.
Main menu > Commissioning > Settings > .... or
Main menu > Settings > Aggregates > Pump 1...4 >
Operating line Range Factory setting
Fault
acknowledgement
None, Acknowledge,
Acknowledge and reset
Acknowledge
If the pump is switched on via the operating mode ("Operating mode-dependent
ON" set to "Yes") and a fault status message is sent, the pump along with entire
plant is switched off (message with plant stop). If setting value "Operating mode-
dependent ON" is set to "No", only the pump is switched off.
No. Text Effect while on factory setting
1211 [Pump 1] overload Urgent message; must be acknowledged
1221 [Pump 2] overload Urgent message; must be acknowledged
1231 [Pump 3] overload Urgent message; must be acknowledged
1241 [Pump 4] overload Urgent message; must be acknowledged
If only one pump is faulty during twin pump operation, run priority changes to the
non-faulty pump output. The fault acknowledgement setting has no effect on the
changeover. The respective overload signal is issued. If both pumps are faulty, a
fault message appears as per section 10.2.4 "Twin pump".
No.
Text Effect while on factory setting
1214 [Pump 1A] overload Non-urgent message; must be acknowledged
1215 [Pump 1B] overload Non-urgent message; must be acknowledged
1224 [Pump 2A] overload Non-urgent message; must be acknowledged
1225 [Pump 2B] overload Non-urgent message; must be acknowledged
1234 [Pump 3A] overload Non-urgent message; must be acknowledged
1235 [Pump 3B] overload Non-urgent message; must be acknowledged
1244 [Pump 4A] overload Non-urgent message; must be acknowledged
1245 [Pump 4B] overload Non-urgent message; must be acknowledged
Configuration
Overload signal
Single pump
Overload signals
Twin pumps