Hitachi SJ Series, User Manual

Page: 357 / 786

12-16-8
Chapter 12 Inverter Function
Alarm output when instantaneous power
failure/under-voltage occurs during stopping
•
Use this function to specify whether to output [AL]
Alarm signal (error output) (output terminal
function 028) when an instantaneous power
failure or under-voltage occurs according to
[bb-27] Selection of instantaneous power
failure/under-voltage trip during stopping.
•
Examples 1 to 6 show cases with no retry.
•
Examples of supplying the power to R0 and T0
from R, S, and T
•
When the power to control power supply terminals
R0 and T0 is supplied from main power supply
terminals R, S, and T, and if the control power
supply terminals continue to be shut off for 80 ms
or more, it is considered as power failure. After the
power supply is recovered, the inverter performs
power-on operation.
• Depending on the load conditions of the motor driven
by the inverter, an under-voltage error [E009], instead of
an instantaneous power failure error [E016], may occur.
•
The inverter outputs the alarm while the power to
control power supply terminals R0 and T0 remains.
(Ex. 1) [bb-27]=00 Inverter is stopped Inverter is running (at rated load)
Power supply Power supply
Operation command [FW] Operation command [FW]
Inverter output Inverter output
Output terminal [AL] Output terminal [AL]
Output terminal [IP] Output terminal [IP]
Output terminal [UV] Output terminal [UV]
(Ex. 2) [bb-27]=01 Inverter is stopped Inverter is running (at rated load)
Power supply Power supply
Operation command [FW] Operation command [FW]
Inverter output Inverter output
Output terminal [AL] Output terminal [AL]
Output terminal [IP] Output terminal [IP]
Output terminal [UV] Output terminal [UV]
(Ex. 3) [bb-27]=02 Inverter is stopped
Inverter is running (during
deceleration stop)
Power supply Power supply
Operation command [FW] Operation command [FW]
Inverter output Inverter output
Output terminal [AL] Output terminal [AL]
Output terminal [IP] Output terminal [IP]
Output terminal [UV] Output terminal [UV]
A
!
ON
OFF
OFF
ON
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
OFF
ON
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
OFF
ON
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
OFF
ON
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
OFF
ON
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
OFF
ON
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Power supply is
recovered
Power supply is
recovered
Power supply
is recovered
No occurrence
No occurrence
No output