Omron 3G3MX2 User Manual page 224

5-8 Restart Functions
*3.When the Deceleration Hold Level of Ctrl. Decel (b052) < the DC Bus Voltage Trigger Level of Ctrl.
Decel (b051), the Inverter performs this function by increasing the Deceleration Hold Level of Ctrl.
Decel (b052) to the DC Bus Voltage Trigger Level of Ctrl. Decel (b051). (Take note that the set values
are not changed.) If b052 is smaller than the equivalent incoming voltage (equivalent DC voltage after
rectification [incoming voltage ×
when the power supply is cut off during the operation. (The Inverter will accept neither a STOP
command nor frequency reference change until the operation is completed.)Make sure that the b052
setting is higher than the normal incoming voltage or equivalent.
*4.If the Freq. Drop to Start Ctrl. Decel (b054) is too large, an overcurrent trip occurs because of rapid
deceleration. If b054 is too small, or if the Deceleration Time of Ctrl. Decel (b053) is too long, an
undervoltage trip occurs because of insufficient regeneration power.
Controlled Deceleration on Power Loss (b050 = 01)
After the power is shut off during operation, the Inverter decelerates to a stop while keeping
the voltage below the setting of
If the power is shut off during operation and the voltage falls below the DC Bus Voltage Trigger Level
of Ctrl. Decel (b051), the frequency deceleration width decreases to the Freq. Drop to Start Ctrl.
Decel (b054), and then the Inverter decelerates for the Deceleration time of Ctrl. Decel (b053).
If an overvoltage condition occurs (the level of
exceeded) due to regeneration while the Inverter is decelerating, this function does not operate
and the Inverter will not decelerate until the overvoltage condition is reset.
Main circuit PN-PN voltage
5
5-107
√
2
Deceleration
VPN (V)
b052
b051
Undervoltage level
Output frequency
(Hz)
b054
b053
]), this function does not operate and the Inverter cannot decelerate
Hold Level of Ctrl. Decel (b052).
Deceleration
SYSDRIVE MX2 Series USER'S MANUAL (3G3MX2-A@@@@)
Hold Level of Ctrl. Decel (b052) is
Time (sec)
Time (sec)