User Manual

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TiOnMin1
TiRup
TiOffMin
TiOnMin1
0
TiRup
Off
On
Key
TiRup
= Runup time
DlyOn = Switch-on delay
DlyOff = Switch-off delay
TiOnMin1 = On time minimum, speed 1
TiOffMin = Off time minimum
You can set a run-up time for the 1-speed motor. The motor operating state is
indicated after the run-up time expires.
Main menu > Commissioning > Settings > .... or
Main menu > Settings > Aggregates > Motor > Motor 1...6 >
Settings
Operating lin
e Range Factory setting
Runup time 00.00...59.59 m.s 00.10 m.s
8.4.3 2-speed motor
Use the 2-speed motor to control a 2-speed fan.
Purpose
In addition to default functions, RMS705B offers special control functions to
optimally control a 2-speed motor:
Special control functions
 Locking speed 2 at low outside temperatures.
 Speed 2 is released again if the outside temperature exceeds the set value by
2 K.
 Set the corresponding value to "----" if you do not want locking by outside
temperature.
 Speed locking; switch-on for the two speeds is mutually exclusive.
 If speed 2 is selected from the start, speed 1 is first switched on for an
adjustable period of time ("Runup time") before switching to speed 2.
 When switching back from speed 2 to speed 1, speed 2 is switched off and
speed 1 is switched on only after the "Rundown time" is over.
 If outside and exhaust air shutoff dampers (spring return motors) are used, use
"Precommand rundown time" for the precommand to ensure that the dampers
do not close while the fan is still coasting.
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Siemens Switching and monitoring device RMS705B CE1P3124en
Building Technologies Aggregates 01.04.2010