User Manual

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Start condition 1
Command B
Start condition 2
Command A
locking time locking time
Functio
n diagram
8.3.6 Load ( )
The load signal ( ) 0...100 % allows for controlling a modulating aggregate. The
signal is sent to the terminals Y(x) via a modulating output block.
Example
CD
C D
X
N.Y1 N.Y2
A B
Rotary
step switch 1
Modul. output Modul. output
8.3.7 Precommand output ( )
Use a precommand output to first start an aggregate (e.g. a pump must be
switched on before the refrigeration machine can switch on).
This command can be simultaneous or delayed by "Precommand runup time"
using the precommand. After switching off the command, the precommand also
switches off after an adjustable "Precommand rundown time" (see 2
nd
example in
Section 8.3.8).
Main menu > Commissioning > Settings > .... or
Setting values
Main menu > Settings > Aggregates > Rotary step switch > Rotary step switch 1...2 >
Operating line Range Factory setting
Precommand runup time
00.00...59.59 m.s
00.00 m.s
Precommand rundown
time
00.00...59.59 m.s
00.00 m.s
 Use the precommand output
together with command .
Notes
 "Precommand runup time" and rundown time apply to all aggregates (A…D).
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Siemens Switching and monitoring device RMS705B CE1P3124en
Building Technologies Aggregates 01.04.2010