Eaton easy500, easy700, Operating Instructions Manual

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4 Wiring  with
4.5 Counter
96
Operating instructions 05/10 MN05013003Z-EN www.eaton.com
4.5.0.5 Value range
The counter relay counts between 0 and 32000.
4.5.0.6 Behavior when value range is reached
The easy control relay is in RUN mode.
If the value of 32000 is reached, this value will be retained until the count
direction is changed. If the value of 00000 is reached, this value will be
retained until the count direction is changed.
Parameter display in RUN mode:
4.5.0.7 Retention
Counter relays can be operated with retentive actual values. You can select
the retentive counter relays in the SYSTEM…
→ RETENTION… menu. C5 to
C7, C8 and C13 to C16 can be selected.
If a counter relay is retentive, the actual value is retained when the operating
mode changes from RUN to STOP as well as when the supply voltage is
switched off.
When easy is restarted in RUN mode, the counter relay continues with the
retentively stored actual value.
4.5.0.8 Determining Counter Frequency
The maximum counter frequency depends on the length of the circuit
diagram in easy. The number of contacts, coils and rungs used determines
the run time (cycle time) required to process the easy circuit diagram.
Example: When using EASY512-DC-TC with only three rungs for counting,
resetting and outputting the result via the output, the counter frequency may
be 100 Hz.
The maximum counter frequency depends on the maximum cycle time.
The following formula is used to determine the maximum counter frequency:
f
c
= maximum counter frequency
t
c
= maximum cycle time
0.8 = Correction factor
Current setpoint, constant (0309)
#
Contact has not switched.
â
Contact has switched.
Actual value (00042)
C1 N +
S 00309
#
C:00042
f
c
=
1
x 0.8
2 x t
c