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4.2.4 Low-speed and speed-reach signal outputs [ LF. r[H. rr[H. Fr[H ]
When an output frequency reaches either a pre-designated low· speed or a pre-designated
frequency, a reach signal is output.
1)
Low-speed signal output
A low-speed signal output frequency
[L F ]
can be set within a range of from 0 to
maximum frequency (Hz).
2)
Speed-reach signal output
Th~
speed-reach condition [
r [H ]
can be set as follows:
j
Setting
on
r[H
Function
o
Outputs when acceleration or deceleration is completed
1
Outputs when a specified frequency is reached
[F
r [H ] .
The range of speed-reach detection can be set within a range of from OHz to maximum
frequency.
I
The frequency for speed-reach specification
[F
j
[H ]
can be set within a range of from 0 to
maximum frequency (Hz).
• For details of the procedure for setting speed-reach detection via the operating panel, refer to
Section 3.1.2 (page
23). Select function number 3 for the selection of limits.
3)
Example operation with low-speed and speed-reach signals (Figure 4.5).
Output frequency
dbF
1
1
1
1
I
I
I
I
1
I
•
- - - - - 1..- __ 1 __ - - - - - - -1- - - - -
I
I
1
1
1
LOW
L.....--fi---;:-----I---,------...J....---fl--Time
1
Across ST -CC
Across F-CC
Output signal across LOW-P24
1
1
Output signal across RCH-P24
~~----~~-------
Figure 4.5 Example operation with low-speed and speed-reach signals
• The speed-reach signal is output when one of the speeds of a multispeed-run operation.
• When DC dissipation braking is applied during a decelerating stop period, the low-speed signal
is turned off.
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