User Manual

Run priority changeover can be automatic, manual, or in the case of fault.
Run p
riority changeover
Main menu > Commissioning > Settings > .... or
Main menu > Settings > Aggregates > Motor > Motor 1...6 >
Setting value
Operating line Range Factory setting
Run priority Motor A
Motor B
Automatic
Automatic
If the selection in operating line "Run priority" is "Automatic", the run priority
automatically changes weekly. Changeover occurs at the time set for motor kick.
Cha
ngeover by time
Assig
n the run priority to a pump by selecting the required pump in operating line
"Run priority" if changeover by time is not what you want.
If a motor is faulty, the run priority is changed over to the other motor. After the fault
is acknowledged and reset, the same run priority as prior to the fault is resumed.
Cha
ngeover in case of
fault
For testin
g, you can manually change over the run priority. To do this, select the
desired motor in operating line "Run priority". When returning the run priority to
"Automatic", the run priority remains active at the current motor until the next
changeover by time.
Manual cha
ngeover
8.4.5 Delay times
You can set a "Switch-on delay", "Switch-off delay", "On time minimum" and "Off
time minimum" for motors.
Main menu > Commissioning > Settings > .... or
Main menu > Settings > Aggregates > Motor > Motor 1...6 >
Setting values
Operating line Range Factory setting
Switch-on delay
00.00...59.59 m.s
00.00 m.s
Switch-off delay
00.00...59.59 m.s
00.00 m.s
On time minimum 1
00.00...59.59 m.s
00.00 m.s
On time minimum 2*
00.00...59.59 m.s
00.00 m.s
Off time minimum
00.00...59.59 m.s
00.00 m.s
* Adjustable only for 2-speed motors.
 "Switch-off delay" and "Off time minimum" always act during the switch-off
command for motors switched off via stop command or via removal of the start
condition.
 "Switch-on delay" and "On time minimum" always act during the switch-on
command for motors switched on via start condition.
 The above times are not effective during switch-off command by motor kick or
while a fault is present.
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Siemens Switching and monitoring device RMS705B CE1P3124en
Building Technologies Aggregates 01.04.2010