User manual

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Wiring with EZ
MN05013003E184
S2 breaks the connection to the control voltage in order to
switch off the machine. This ensures that the machine can be
switched off, even in the event of a wire break. I2 is always
closed when not actuated.
A self-latching circuit with wire break monitoring can
alternatively be wired using the Set and Reset coil functions.
If I1 is activated, coil Q1 latches. I2 executes the break contact
signal from S2 and does not switch until S2 is actuated. In this
way, the machine is switched off if or when a wire breaks.
Make sure that both coils are wired up in the correct order in
the EZ circuit diagram: first wire the S coil and then the R coil.
This will ensure that the machine will be switched off when I2
is actuated, even if I1 is switched on.
Impulse relay
An impulse relay is often used for controlling lighting such as
for stairwell lighting.
Table 23: Impulse relay
Cycle pulse on rising edge
You can create a cycle pulse on a rising edge if you use the
appropriate coil function.
This is very useful for count pulses, jump pulses.
I1-------SQ1
i2-------RQ1
S1 make contact at I1
S2 break contact at I2
I1-------äQ1
S1 make contact at I1
I1 Status of Q1
Q1
00 0
01
1
10 1
11
0
I1-------ÈQ1
S1 make contact at I1
EZ500_700.book Page 184 Tuesday, May 3, 2005 5:15 PM