IDEC FL1E-H12RCA User Manual page 183

Timing diagram
Functional description
The frequency trigger measures the signals at input Fre. The
pulses are recorded across a configurable time G_T.
Output Q is set and reset in accordance with the set
thresholds. See the calculation rule below.
Calculation rule
If the On threshold  Off threshold, then:
•
Q = 1, if f
Q = 0, if f
• If the On threshold < Off threshold, then:
Q = 1, if On ≦ f
Setting the Par parameter
Note
The system scans the counter limit value once per interval G_T.
View in programming mode (example):
B15
On =0009
Off =0005
Press
B15
G_T=01:00s
IDEC SmartRelay Manual
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Q
G_T
Fre
f = 9 f = 10
a a
f = Input frequency
a
> On
a
≦ Off.
a
< Off.
a
1+
2
IDEC SmartRelay functions
f = 8 f = 5
a a
Parameter protection mode
On threshold
Off threshold
Time interval for pulses
(example)
On = 9
Off = 5
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