Eaton easy500, easy700 Operating Instructions Manual page 106

4 Wiring  with
4.6 High-speed counters, -DA, -DC
4.6.1.5 Value range
4.6.1.6 Retention
4.6.1.7 Function of the frequency counter
102
The counter relay counts between 4 and 1000 [Hz].
Parameter display in RUN mode:
C15 F +
Current setpoint, constant (0246)
S 00246
# C:00153
#
â
Actual value (00153)
Setting retention on the frequency counter serves no purpose since the
frequency is continuously remeasured.
1
2
3
4
5
t t
g g
Figure 56: Signal diagram of frequency counter
1: counter input I3 or I4
2: upper setpoint
3: enable coil CC...
4: reset coil RC...
5: contact (N/O contact) C... upper setpoint value reached.
: gate time for the frequency measurement
tg
• Range A: the counter is enabled. After a frequency above the setpoint was measured for the first time,
contact C15 (C16) switches.
• Range B: If the actual value falls below the setpoint, the contact is reset. The removal of the enable
signal resets the actual value to zero.
Operating instructions 05/10 MN05013003Z-EN www.eaton.com
Contact has not switched.
Contact has switched.
B
A
t t t
g g g
D
C
t t t
g g g
t
g