4 Wiring with
4.5 Counter
Operating instructions 05/10 MN05013003Z-EN www.eaton.com 97
Example
The maximum cycle time is t
c
= 4000 μs (4 ms).
4.5.1 Function of the counter function relay
:
Figure 54: Signal diagram
1: Count pulses at the count coil CC…
2: Count direction, direction coil DC…
3: Reset signal at the reset coil RC…
4: Counter setpoint (the setpoint in the figure = 6)
5: actual value of the counter
6: contact of the counter, C
• Range A: The relay contact of counter
C with setpoint value 6 switches when the actual value is 6.
• Range B: If the counting direction is reversed B, the contact is reset when the actual value is 5.
• Range C: Without count pulses the current actual value is retained.
• Range D: The reset coil resets the counter to 0.
4.5.1.1 Example: counters, counting unit quantities, manual counter value reset
The input I6 contains the necessary counter information and controls the
count coil CC1 of counter 1. Q4 is activated if the setpoint is reached. Q4 is
activated if the setpoint is reached. Q4 remains switched on until I7 resets
counter C1 to zero with the RC1 coil.
f
c
=
1
x 0.8 = 100 Hz
2 x 4 ms
on
on
1
2
on
3
on
6
BACD
4
0
1
2
3
4
5
6
7
8
5
Circuit diagram display Parameter settings of the counter C1
I6-------CC1
C1-------ÄQ4
I7-Q4----RC1
To Next Page
Loading...
