6 Programming Features
105
2. For a multi-step speed reference, the setting unit is Hz (absolute
value), and so the motor rotates at the commanded value regardless
of the motor selection status.
If a multi-step speed reference exceeding the selected maximum out-
put frequency multiplied by the Frequency Reference Upper Limit
(n033) is mistakenly input, upper limit operation will be performed
at the selected maximum output frequency multiplied by the Fre-
quency Reference Upper Limit (n033).
Example: If n011 = 60 Hz, n140 = 50 Hz, and n033 = 100%, opera-
tion will be at 50 Hz when a multi-step speed reference of 60 Hz is
mistakenly input when motor 2 is selected.
3. Multi-step Speed Reference (n024 to n032) Upper Limit (Setting
Range Upper Limit)
The upper limit is Maximum Output Frequency (n011) for motor 1
or the Motor 2 Maximum Output Frequency (n140), whichever is
greater, multiplied by the Frequency Reference Upper Limit (n033).
4. The setting values of the Acceleration and Deceleration Times (n019
to n022) are the times required to reach the selected maximum out-
put frequency.
Example: If n011 = 60 Hz, n140 = 50 Hz, and acceleration (deceler-
ation) time = 10 s, motor 1 will accelerate (decelerate) for 5 s and
motor 2 will accelerate (decelerate) for 6 s to reach 30 Hz starting at
0 Hz (or to reach 0 Hz starting at 30 Hz).
Motor 2 Switching Time Chart
Example of Switching Operation from Motor 1 to Motor 2
OFF
OFF
OFF
OFF
ON
OFF
ON
ON
ON
Motor Switching Command
M1 operation
M2 operation
Contact for
motor
switching
Motor Selection Monitor
FWD (REV) Run Command
50 ms max.
FWD (REV) Run Command is turned ON after checking
the status of M1, M2, and the Motor Selction Monitor.
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