Mitsubishi Electric 800 Series Instruction Manual page 552

NOTE
• Stop selection is disabled when following functions are operating.
Power failure stop function (Pr.261)
PU stop (Pr.75)
Deceleration stop due to communication error (Pr.502)
Offline auto tuning (with motor rotation)
• When Pr.250 ≠ "9999 or 8888", acceleration/deceleration is performed in accordance to the frequency command until the
output is shutoff by turning OFF the start signal.
• When the restart signal is turned ON during the motor coasting, the operation is resumed from Pr.13 Starting frequency.
 Start signal operation selection
 2-wire type (STF, STR signal)
• The following figure shows the connection in 2-wire type.
• As an initial setting, 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 perform a deceleration stop when both are turned
OFF (or both are turned ON) during the operation.
• There are methods such as inputting 0 to 10 VDC between the speed setting input terminals 2 and 5, or Pr.4 to Pr.6 multi-
speed setting (fast, medium, slow) for the frequency setting signal. (For multi-speed operation, refer to
• By setting Pr.250 = "1000 to 1100, 8888", STF signal becomes start command and STF signal becomes forward/reverse
command.
Forward
rotation start
Reverse
rotation start
ON
STF
STR
2-wire type connection example (Pr.250 = "9999")
NOTE
• By setting Pr.250 = "0 to 100, 1000 to 1100", it will perform coast to stop when the start command is turned OFF.
• The STF and STR signals are assigned to the terminals STF and STR in the initial status. STF signal can be assigned to
a terminal by Pr.178 STF terminal function selection, and STR signal can be assigned to a terminal by Pr.179 STR
terminal function selection.
STF
Inverter
STR
SD
10
2
5
Time
ON
STF
Start signal
STR
Forward/
reverse
SD
signal
10
2
5
ON
STF
STR
2-wire type connection example (Pr.250 = "8888")
page 226.)
Inverter
Time
ON
5. PARAMETERS
5.13 (G) Control parameters
3
4
5
5
5
6
7
8
9
10
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