Parameter No. Function name Data Default data Unit
301FHex-35Hex
Starting Frequency Selection
at Frequency Pull-in Restart
0: Frequency at which the
power failure occurred
1: Maximum output frequency
2: Frequency reference
3: Starting frequency
3 -
3052Hex-29Hex
Free Run Stop Restart Allow-
able T
ime
0.0 to 30.0 30.0
s
3005Hex-02Hex to
3005Hex-06Hex,
3005Hex-63Hex,
3005Hex-64Hex
Input Terminal [DI1] to [DI7]
Function Selection
7: FRS (Free-run stop)
26: STM (Enable auto search
for idling motor speed at start-
ing)
- -
Auto Search Restart (3052Hex-2AHex = 1)
• Auto search restart causes the inverter to anticipate the frequency from the voltage between the mo-
tor terminals in a free-run state and restart matched to that frequency. If the anticipated frequency is
not suf
ficient, the inverter restarts from 1st Starting Frequency (3004Hex-18Hex)/2nd Starting Fre-
quency (3009Hex-0DHex).
• With the RUN command ON, when the free-run state is canceled after the Auto Search Delay Time
2 for Starting Mode (3008Hex-2FHex) has elapsed since the free-run state, the auto search restart
is started.
• The restart is performed at the starting frequency when Free Run Stop Restart Allowable Time
(3052Hex-29Hex) is set shorter than Auto Search Delay Time 2 for Starting Mode
(3008Hex-2FHex).
• The examples below assume that the FRS terminal is used.
• When the anticipated frequency exceeds the Maximum Output Frequency (3004Hex-04Hex/
3009Hex-02Hex) or the Frequency Upper Limit (3004Hex-10Hex/301FHex-12Hex), auto search re-
start is not performed, and the restart is performed using the maximum frequency or the Frequency
Upper Limit (3004Hex-10Hex/301FHex-12Hex), whichever is lower.
Auto Search
Delay Time 2 for
Starting Mode
(3008Hex-2FHex)
Free Run Stop Restart
Allowable Time
(3052Hex-29Hex)
FW
FRS terminal
Output frequency
(Motor rotation speed)
8 Other Functions
8-53
M1 Series EtherCAT Type User’s Manual (I670)
8-4 Restart Functions
8
8-4-5 Free Run Restart
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