5.3 Description of Function Codes 5.3.5 H codes (High performance functions)
Preset startup count for maintenance (M1)
Related function code: H44 Startup count for motor 1
Related function codes: H81 Warning selection 1
H79 specifies the number of inverter startup times to determine the next maintenance timing, e.g., for replacement
of a belt.
The maximum of 65,535 times can be set.
• Data setting range: 0 (Disable), 1 to 65,535
Maintenance timer “MNT” (Function code E20 to E24, E27, data = 84)
When the startup counter for motor 1 (H44) reaches the number specified by H79 (Preset startup count for
maintenance (M1)), the inverter outputs the maintenance timer signal “MNT” (if assigned to any digital terminal with
any to E20 to E24 and E27) to inform the user of the need of the maintenance of the machinery. Furthermore, by
assigning warnings with H81, CnT appears on the keypad when the set number of times is reached, and warning
“L-ALM” is output to notify the user.
< Maintenance every 1,000 times of startups >
If the startup counter reaches the specified value, set a new value for the next maintenance in H79 and
press the key to reset the output signal and restart counting.
This function is exclusively applied to the 1st motor.
Current vibration damping gain 1 to 4
The inverter output current driving the motor may fluctuate due to the motor characteristics and/or backlash in the
machinery (load). Modifying the H80 data adjusts the controls in order to suppress such fluctuation. However, as
incorrect setting of this gain may cause larger current fluctuation, do not modify the default setting unless it is
necessary.
• Data setting range: 0.00 to 1.00
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