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141
PARAMETERS
5
I/O signal control
5.11 I/O signal control
5.11.1 Operation of start signals (STF, STR signal)
The forward/reverse rotation signals (STF/STR) are used as start and stop signals. Turn ON either of the forward and
reverse rotation signals to start the motor in the corresponding direction. Switch both OFF (or both ON) of the start signals
during operation to decelerate the inverter to a stop.
The speed setting signal may either be given by Pr. 4 to Pr. 6 Multi-speed setting (high, middle, low speeds), etc.
Purpose Parameter that should be Set Refer to Page
Operation of start signals (STF, STR
signal)
—
141
Reset cancellation and inverter run
detection
—
142
Second function selection signal
(RT signal)
—
143
Setting MRS signal (output shutoff)
to NC contact specification
MRS input selection Pr. 17
143
Detection of output frequency
Up-to-frequency
sensitivity
Output frequency
detection
Pr. 41 to Pr. 43
144
Detection of output current
Output current detection
Zero current detection
Pr. 150 to Pr. 153
145
REMARKS
When Pr. 250 is set to any of "0 to 100", turning OFF the start command coasts the inverter to a stop. (Refer to page 138)
Parameters referred to
Pr. 4 to Pr. 6 (multi-speed setting) Refer to page 111
Pr. 250 Stop selection Refer to page 138
Reverse rotation start (STR)
Forward rotation start (STF)
ON
Time
Output frequency
ON
Forward
rotation
Reverse
rotation