ABB CL Series Applications Manual page 196

1SVC 440 795 M0100
The CL circuit diagram for the
above functions is as follows:
I1-------TT2
T2-------SM1
I1u------äQ1
T3k
Q1-m1----TT3
q1-------RM1
Figure 80: CL circuit diagram for stairwell lighting
Meaning of the contacts and relays used:
• I1: ON/OFF pushbutton
• Q1: Output relay for light ON/OFF
• M1: Marker relay. This is used to block the "switch off
automatically after 6 minutes" function for continuous
lighting.
• T1: Cycle pulse for switching Q1 on and off,
ü
( , single-pulse with value 00.00 s)
• T2: Scan to determine how long the button was pressed.
If pressed longer than 5 s, continuous lighting is switched
X
on ( , on-delayed, value 5 s).
• T3: Switch off after a lighting time of 6 min.
X
( , on-delayed, value 06:00 min).
• T4: Switch off after 4 hours continuous lighting
X
, on-delayed, value 04:00 h).
(
If you are using the logic relay with a time switch, you can
define both the stairwell lighting and the continuous lighting
periods via the time switch.
Circuit examples
The enhanced CL circuit diagram:
after four hours, the continuous
lighting is also switched off.
I1------uTT1
hTT2
T2-------SM1
T1u------äQ1
T3s
T3k
Q1um1----TT3
h------TT4
q1-------RM1
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