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8 PARAMETER FUNCTIONS
8-61
8
8.7.3 Detection of running speed
Initial value
Pr. 41 "up-to-speed sensitivity" 10
Setting Range Unit
0.0 to 100.0 %
Once the motor speed in response to the speed command has fallen within the range set in Pr. 41
can be exported from the control circuit output terminal where the SU signal has been assigned.
Refer to: 8.7.2 Selection of the control circuit output terminal functions
When the motor speed reaches the command value, it can be used as the operation start signal of
the related equipment.
A
B
a
b
c
Pr. 41
Pr. 41
ON ON
(RM)
(RH)
ON
ON
ON
<Setting example>
When Pr. 41=10
a=0.9 A, b=1.1 B, c=0.9 C.
(Example) High speed (RH ON) ... Ar/min, speed 6 (RH, RM ON) ... Br/min
Running speed
STF signal
RH signal
RM signal
SU signal
Time
MEMO
When using the analog signal or the operation panel's key to vary the speed,
the SU signal may alternate between "ON" and "OFF". In this case, change the
acceleration/deceleration time setting [Section 8.5.2] to "0".