Eaton PROFIBUS-DP EZ204-DP User Manual Page 200

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Wiring with EZ
MN05013003E196
Figure 81: EZ circuit diagram 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 on
(
X, on-delayed, value 5 s).
T3 switch off after a lighting time of 6 min. (
X, on-delayed,
value 6:00 min.).
T4 Switch off after 4 hours continuous lighting (
X, on-
delayed, value 4:00 h).
If you are using an EZ with a time switch, you can define both
the stairwell lighting and the continuous lighting periods via
the time switch.
The EZ circuit diagram for the
functions described above looks
like this:
The enhanced EZ circuit diagram:
after four hours, the continuous
lighting is also switched off.
I1-------TT2
T2-------SM1
I1u------äQ1
T3k
Q1-m1----TT3
q1-------RM1
I1------uTT1
hTT2
T2-------SM1
T1u------äQ1
T3s
T4k
Q1um1----TT3
h------TT4
q1-------RM1
EZ500_700.book Page 196 Tuesday, May 3, 2005 5:15 PM
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