WARNING

lIf the retry mode is selected, do not approach the inverter unnecessarily. It will be restarted suddenly after it trips/stops. (Design the inverter so that the safety can be assured even in such a restart.) Otherwise, bodily injury will result.

NOTE: Since the retry mode is selected, the equipment restarts for trips of overcurrent, overvoltage, or undervoltage. For undervoltage, 16 retries (17th trip) are executed. For overcurrent or overvoltage, 3 retries (fourth trip) are executed.

Do not use this function for a case that a fallen substance should be held by the machine brake when the motor is in the free-run mode.

In the following cases, the equipment may start at the lowest frequency (called 0 start).

1)When the reclosing standby time (function mode F-22, IPS WAIT) after the instantaneous power failure is recovered is set to 3 seconds or more

2)When the output frequency is more than 60 Hz

3)When the base frequency is 60 Hz: Driven at 30 Hz or less

When the base frequency is 50 Hz: Driven at 25 Hz or less

4)When the induced voltage of the motor attenuates earlier (for example, a pump or high- speed gear which causes the motor to decelerate for several seconds or less)

NOTE: The inverter control power holding time may be slightly different depending on the inverter rating, the load status, remote operator (copy unit) connection status, and input voltage.

<Time chart for retry mode>

 

 

t0

 

 

 

 

 

t0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

t0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Power supply

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

t1

 

 

 

 

 

 

 

 

 

Inverter control

 

 

t1

 

 

 

 

 

 

 

 

t1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

power supply

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

t2

 

 

 

 

 

 

 

 

 

 

 

Allowable

t2

 

 

 

t2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

instantaneous

 

 

 

 

 

 

 

 

 

 

power failure time

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

F-22

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(data set value)

 

 

 

 

 

 

 

 

 

 

 

 

 

F-22 (IPS WAIT set value)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

About1second

Inverter output

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Alarm

 

 

 

 

 

The operation restarts because t2>=t0. The running restarts when a running

An instantaneous power failure trip

 

 

(Inst.p-f) occurs because t2>t0.

 

 

 

 

 

 

 

command is issued because t2>t1.

t0: Instantaneous power failure time t1: Control power holding time

t2: F-22 (IPS TIME set value)

 

 

 

 

when power is turned OFF

 

 

 

 

 

A-16

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Image 128
Hitachi J300U Series instruction manual Time chart for retry mode, Alarm