Mitsubishi Electric FR-F820-00046 Instruction Manual page 361

Use this function to stop a motor with a mechanical brake at turn-OFF of the start signal.
Pr. Name
250
Stop selection
G106
 2-wire type (STF signal, STR signal)
• The following figure shows the 2-wire type connection.
• As an initial setting, the forward/reverse rotation signals (STF/STR) acts as both start and stop signals. Either one turned
ON will be enabled, and the operation will follow that signal. The motor will decelerate to a stop when both are turned OFF
(or both are turned ON) during the operation.
• The frequency can be set by inputting 0 to 10 VDC between the speed setting input terminals 2 and 5, or with Pr.4 to Pr.6
Multi-speed setting (high speed, middle speed, and low speed). (For the multi-speed operation, refer to
• By setting Pr.250 = "1000 to 1100, 8888", the STF signal input becomes the start command and the STR signal input
becomes the forward/reverse command.
Forward
rotation start
Reverse
rotation start
STF
STR
2-wire type connection example (Pr.250 = "9999")
NOTE
• By setting Pr.250 = "0 to 100, 1000 to 1100", the motor will coast to a stop when the start command is turned OFF. (Refer to
page 538.)
• The STF and STR signals are assigned to the STF and STR terminals in the initial status. The STF signal can be assigned to
terminal STF only using Pr.178 STF terminal function selection, and the STR signal can be assigned to terminal STR only
using Pr.179 STR terminal function selection.
 3-wire type (STF signal, STR signal, STP (STOP) signal)
• The following figure shows the 3-wire type connection.
• The self-holding function is enabled when the STP (STOP) signal is turned ON. In such case, the forward/reverse signal
is simply used as a start signal.
• Even if a start signal (STF or STR) is turned ON and then OFF, the start command remains valid and the motor operation
continues. To change the rotation direction, turn the STR (STF) signal ON once and then OFF.
360
5. PARAMETERS
5.9 (T) Multi-function input terminal parameters
Initial value Setting range
0 to 100 s
1000 to 1100 s
9999
9999
8888
STF
Inverter
STR
SD
10
2
5
ON
ON
Start signal (STF/STR)
STF signal: Forward rotation start
STR signal: Reverse rotation start
STF signal: Start signal
STR signal: Forward/reverse
rotation signal
STF signal: Forward rotation start
STR signal: Reverse rotation start
STF signal: Start signal
STR signal: Forward/reverse
rotation signal
Start signal
Forward/
reverse
signal
Time
STF
STR
2-wire type connection example (Pr.250 = "8888")
Description
Stop operation (Refer to
The motor coasts to a stop after a lapse
of the setting time when the start signal
is turned OFF.
When set to 1000 to 1100 s, the motor
will coast to stop after (Pr.250 - 1000) s.
The motor is decelerated to a stop
when the start signal is turned OFF.
STF
Inverter
STR
SD
10
2
5
ON
ON
page 538.)
page 249.)
Time