5.11 I/O Signal Control; Operation Of Start Signals (Stf, Str Signal) - Mitsubishi Electric 700 Series Instruction Manual

5.11 I/O signal control

Purpose
Operation of start signals (STF, STR
signal)
Reset cancellation and inverter run
detection
Second function selection signal
(RT signal)
Setting MRS signal (output shutoff)
to NC contact specification
Detection of output frequency
Detection of output current

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.
Forward
rotation
Reverse
rotation
Forward rotation start (STF)
Reverse rotation start (STR)
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)
Pr. 250 Stop selection
Parameter that should be Set
MRS input selection
Up-to-frequency
sensitivity
Output frequency
detection
Output current detection
Zero current detection
ON
ON
Refer to page 111
Refer to page 138
I/O signal control
—
—
—
Pr. 17
Pr. 41 to Pr. 43
Pr. 150 to Pr. 153
Time
Refer to Page
141
142
143
143
144
145
5
141