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Function assignment of external terminal and control
(2) Three-wire type (STF, STR, STOP signal)
The three-wire connection is shown below.
Turning the STOP signal ON makes start self-holding function valid. In this case, the forward/reverse rotation signal
functions only as a start signal.
If the start signal (STF or STR) is turned ON and then OFF, the start signal is held and makes a start. When changing the
direction of rotation, turn STR (STF) ON once and then OFF.
To stop the inverter, turning OFF the STOP signal once decelerates it to a stop.
When using the STOP signal, set "25" in any of Pr.178 to Pr.182 to assign function.
(3) Start signal selection
3-wire connection example (Pr. 250 = "9999")
3-wire connection example (Pr. 250 = "8888")
REMARKS
When the JOG signal is turned ON to enable Jog operation, the STOP signal becomes invalid.
If the MRS signal is turned ON to stop the output, the self-holding function is not canceled.
STF STR
Pr. 250 Setting Inverter Status
0 to 100s, 9999 1000s to 1100s 8888
OFF OFF Stop
Stop
OFF ON Reverse rotation
ON OFF Forward rotation Forward rotation
ON ON Stop Reverse rotation
Parameters referred to
Pr. 4 to Pr. 6 (multi-speed setting) Refer to page 89
Pr. 178 to Pr. 182 (input terminal function selection) Refer to page 113
STOP
ON
OFF OFF
Stop
Forward
rotation start
Reverse
rotation start
STF
STR
SD
STOP
Inverter
Time
STF
STR
ON
Output frequency
ON
Forward
rotation
Reverse
rotation
Time
STOP
Stop
Forward rotation
/reverse rotation
Start
STF
STR
ON
STOP
ON
STF
STR
SD
Inverter
Output frequency
ON
ON
OFF OFF
Forward
rotation
Reverse
rotation