Load connection applies the following pattern:
Load connection
3101D20
Q
1
/
16
1
/
16
2
/
16
4
/
16
2
/
16
2
/
16
4
/
16
2
/
16
8
/
16
Q
100 %0 %
2
/
16
4
/
16
8
/
16
Y+Q
Y+Q
0 % 100 %
AO
STEP 1
AO
STEP 2
STEP 3
STEP 4
Example with 2 digital outputs:
Switching interval
3101D21
0 %
aaaa
0Y + 2Q
0 %
aaaa
1Y + 2Q
Y+Q
Q
S2-ON
S2-OFF
S1-ON
S1-OFF
MAX POS
MIN POS
Q
¼ a
Y+Q
100 %100 %
AO
STEP 1
STEP 2
Additionally, you can enter a common locking time for the relay outputs. This
ensures that a step that has just switched off remains off for at least the set period
of time.
Locking time
(OFFTIME)
If a relay output is locked, all relays with less power will be energized for the
duration if required by the sequence controller in order to prevent a total power
drop off.
Application example: Control of refrigeration machine
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Siemens Universal Controllers RLU2… CE1P3101en
Building Technologies Aggregates 29.08.2008