Siemens Synco 700 RMZ785 - Page 90

Application examples
Output configuration Modulating load input with
switching command outputs
Load input,
start condition
A B C D
Number of
stages or
aggregates
4
1
Start
Run priority
changeover
(Example 1) A+B+C+D a d d d d No
Description:
- Several recirdulated air heaters with different capacities are controlled to room temperature.
- Rated outputs for the 4 aggregates controlled digitally by the flexible step switch: Aggregate A = 1
kW, Aggregate B = 1 kW, Aggregate C = 2 kW, Aggregate D = 3 kW.
- The total output at X
P
= 100 % is 7 kW.
Plant diagram Function diagram
4
3
2
AI
DI
AO
DO
3123S59
1
1 KW
1 KW
2 KW
3 KW
T
Configuration diagram
CD
C D
X
Rotary
step switch 1
0 % 100 %
X
P
B
A
C
D
X
P
100 %
0 %
B
C
D
B
C
B
A
3123D33
Main menu > Commissioning > Extra configuration > Aggregates > Rotary step switch >
Rotary step switch 1…2 >
Configuration
Operating line Setting
Type Flexible
Main menu > Commissioning > Settings > .... or
Main menu > Settings > Aggregates > Rotary step switch > Rotary step switch 1…2 >
Operating line Range Setting
Output A 0.1…999.9 1.0
Output B 0.1…999.9 1.0
Output C 0.1…999.9 2.0
Output D 0.1…999.9 3.0
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Siemens Switching and monitoring device RMS705B CE1P3124en
Building Technologies Aggregates 01.04.2010