Basic Documentation

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Siemens Universal controllers RMU710B, RMU720B, RMU730B CE1P3150en
Building Technologies Aggregates 03.10.2011
10.2 Pump
The pump block controls and monitors all pump functions. Single or twin pumps
can be controlled.
730
720
730
For each type of universal controller, the following number of pump blocks is
available:
RMU710B: max. 2 blocks
RMU720B: max. 3 blocks
RMU730B: max. 4 blocks
Inputs Outputs
Precommand checkback signal
(section 10.2.9)
Precommand
(section 10.2.8)
V
Flow signal
(section 10.2.6)
B
Pump A, Pump B – Output
AB
Pump A, Pump B overload signal
(section 10.2.7)
2
1
Start
Start condition 1, Start condition 2
(section 10.2.10)
12
Stop
Stop condition 1, Stop condition 2
(section 10.2.10)
/
On
Operating mode-dependent ON
For optimum control and supervision, the pump block in the RMU7..B offers the
following functions for all pump types:
 Adjustable delay times
 Switching on according to the outside temperature
 Frost-dependent ON
 Selectable pump kick
 Assignable text
 Hours run counter
Explanation of symbols
Control and monitoring
functions