Basic Documentation

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Siemens Universal controllers RMU710B, RMU720B, RMU730B CE1P3150en
Building Technologies Aggregates 03.10.2011
Using the precommand checkback signal is sensible only if combined with the
configured precommand.
PcmdRnup
PcmdRnup
PcmdRndw
PcmdRnupPcmdRndw
PcmdRndw
0
I
0
I
Off
Startcondition
On
Off
On
Precommand
Pump fault
Precommand
checkback
Off
On
Off
On
3150D14en
Fault message
acknowledged
+ reset
Pump
Normal operation Precommand
checkback signal
missing
Precommand
checkback signal
lost during operation
PcmdRnup = Precommand runup time
PcmdRndw = Precommand rundown time
No. Text Effect
1218 [Pump 1] precom
no checkb sign
Urgent message; must be acknowledged and
reset
1228 [Pump 2] precom
no checkb sign
Urgent message; must be acknowledged and
reset
1238 [Pump 3] precom
no checkb sign
Urgent message; must be acknowledged and
reset
1248 [Pump 4] precom
no checkb sign
Urgent message; must be acknowledged and
reset
10.2.10 Start and stop conditions
2
1
Start
12
Stop
Two inputs can be configured as start and stop conditions for each pump block.
The following function e.g. can be implemented: Control switch on the panel, acting
directly on the pumps. A separate control switch can be implemented for each
pump.
If control is to be off while the pump is off, the same input can be used for a
universal fault message, triggering a plant stop (e.g. configuration of fault status
message: Not urgent signal, without acknowledgement; with plant stop, text
manual operation).
Main menu > Commissioning > Extra configuration > Aggregates > Pumps > Pump 1...4 >
Operating line Adjustable values / remarks
Start condition 1 ---, N.X1, N.X2, ... (digital and analog inputs)
Start condition 2 ---, N.X1, N.X2, ... (digital and analog inputs)
Stop condition 1 ---, N.X1, N.X2, ... (digital and analog inputs)
Stop condition 2 ---, N.X1, N.X2, ... (digital and analog inputs)
Stop conditions take priority over start conditions (see section 10.2.16 "Priorities").
Note
Functio
n diagram
based on
single pump
Fault status messages
Configuration
Note