Additional Information
When using vector control without speed sensor, do not use restarting from the pull-in frequen-
cy (Starting Frequency Selection at Frequency Pull-in Restart (301FHex-35Hex)). If you select
starting from pull-in frequency, normal start may not be performed, or the device may be
damaged.
Use the retry function to recover from overvoltage or overcurrent.
(3008Hex-05Hex: Retry Count at Trip, 3008Hex-06Hex: Retry Standby T
ime at Trip)
As for the starting method, the settings in E139 is applied.
Pull-in*
*Example of the set frequency (301FHex-35Hex = 2)
Output frequency
(motor rotation speed)
Overvoltage/overcurrent detection
Restart from
starting frequency
3008Hex-06Hex
Auto search
Auto-resetting
“TRY”
8-4-4
Unattended Start Protection (USP Terminal)
• Use this function to have the inverter trip if the power supply is turned ON with the RUN command
ON in the inverter.
• When the RUN command is ON and multifunction input “USP” is ON when the power is ON, a run
operation error (alarm code: 24, sub code: 30) is generated
• When the run operation error is reset with the RUN command still ON, operation is started regard-
less of the ON/OFF setting of “USP.” (Example 1)
• If the RUN command turns ON after the power supply is turned ON, the inverter operates normally.
(Example 2)
• Allocate “186: USP (Unattended start protection)” to Input Terminal [DI1] to [DI7] Function Selection
(3005Hex-02Hex to 3005Hex-06Hex, 3005Hex-63Hex, 3005Hex-64Hex).
• Power recovery restart prevention based on USP input is enabled only for a RUN command from
the terminal block.
Parameter No. Function name Data
Default da-
ta
Unit
3005Hex-02Hex to
3005Hex-06Hex,
3005Hex-63Hex,
3005Hex-64Hex
Input Terminal [DI1] to [DI7]
Function Selection
186: USP (Unattended
start protection)
- -
The operation of the unattended start protection is shown below.
8 Other Functions
8-51
M1 Series EtherCAT Type User’s Manual (I670)
8-4 Restart Functions
8
8-4-4 Unattended Start Protection (USP Terminal)
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