SJ700-2 Instruction Manual NT204DX - Hitachi America, Ltd.
SJ700-2 Instruction Manual NT204DX - Hitachi America, Ltd.
SJ700-2 Instruction Manual NT204DX - Hitachi America, Ltd.
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Chapter 4 Explanation of Functions<br />
4.2.27 Retry or trip after instantaneous power failure<br />
(1) Retry (restart) after instantaneous power failure<br />
You can select tripping or retrying (restarting) the motor<br />
operation as the inverter operation to be performed at the<br />
occurrence of instantaneous power failure or undervoltage.<br />
If you specify a retry operation for the selection of restart mode<br />
(b001), the inverter will retry the motor operation for the number<br />
of times set as "b005" after an instantaneous power failure or<br />
the number of times set as "b009" after overvoltage<br />
respectively, and then trip if all retries fail. (The inverter will not<br />
trip if you specify an unlimited number of retries.)<br />
With function "b004" you can select whether to make the inverter trip when an instantaneous power failure<br />
or undervoltage occur while the inverter is in a stopped state.<br />
When selecting a retry operation, also set the retry conditions listed below according to the system to be<br />
driven by the inverter.<br />
Even during a retry operation, the inverter will trip with error code "E09" (undervoltage) displayed if the<br />
undervoltage status continues for 40 seconds.<br />
Item<br />
Function code<br />
Data or range of<br />
data<br />
Description<br />
00 Tripping<br />
01 Restarting the motor with 0 Hz at retry<br />
Starting the motor with a matching frequency at retry<br />
02<br />
(See example 1.) (*3)<br />
Selection of restart mode<br />
b001<br />
(*4) (*6)<br />
Starting the motor with a matching frequency at retry<br />
03<br />
The inverter trips after decelerating and stopping the<br />
motor. (*1) (*3)<br />
04<br />
Restarting the motor with an input frequency at retry<br />
(See example 1.) (*3)<br />
Restarting the motor when the power failure duration does<br />
Allowable under-voltage<br />
not exceed the specified time (See example 1.)<br />
b002 0.3 to 25.0 (s)<br />
power failure time<br />
Tripping when the power failure duration exceeds the<br />
specified time (See example 2.)<br />
Retry wait time before<br />
motor restart<br />
b003 0.3 to 100. (s) Time to wait until restarting the motor<br />
00 Disabling the inverter from tripping<br />
Instantaneous power<br />
01 Enabling the inverter to trip<br />
failure/under-voltage trip<br />
alarm enable (*2) (*4)<br />
b004<br />
02<br />
Disabling the inverter from tripping when the inverter is<br />
stopped or while the motor is being decelerated or<br />
stopped after the operation command has been turned off<br />
Retrying the motor operation up to 16 times after<br />
Number of restarts on<br />
00<br />
instantaneous power failure<br />
power failure/under-voltage b005<br />
trip events<br />
Retrying the motor operation an unlimited number of times<br />
01<br />
after instantaneous power failure<br />
Restarting the motor with 0 Hz if the frequency becomes<br />
Restart frequency threshold b007 0.00 to 400.0 (Hz) less than the frequency set here during motor free-running<br />
(See examples 3 and 4.)<br />
00 Tripping<br />
01 Restarting the motor with 0 Hz at retry<br />
02 Starting the motor with a matching frequency at retry<br />
Trip/retry selection<br />
b008<br />
03<br />
Starting the motor with a matching frequency at retry<br />
The inverter trips after decelerating and stopping the<br />
motor.<br />
04 Restarting the motor with an input frequency at retry<br />
Retrying the motor operation up to 16 times after<br />
00<br />
Selection of retry count<br />
undervoltage<br />
b009<br />
after undervoltage<br />
Retrying the motor operation an unlimited number of times<br />
01<br />
after undervoltage<br />
Selection of retry count<br />
Number of retries to be made after the occurrence of<br />
after overvoltage or<br />
b010 1 to 3 (times)<br />
overvoltage or overcurrent (*5)<br />
overcurrent<br />
Retry wait time after<br />
overvoltage or overcurrent<br />
b011 0.3 to 100. (s) Time to wait until restarting the motor<br />
Active frequency matching,<br />
restart frequency select<br />
Active frequency matching,<br />
scan start frequency<br />
Active frequency matching,<br />
scan-time constant<br />
b030<br />
b028<br />
b029<br />
00 Frequency set when the inverter output has been shut off<br />
01 Maximum frequency<br />
02 Newly set frequency<br />
"0.20 x rated<br />
current" to "2.00 x Current limit for restarting with active matching frequency<br />
rated current"<br />
0.10 to 30.00 (s)<br />
Duration of frequency lowering when restarting with active<br />
matching frequency<br />
4 - 33<br />
Related code<br />
b001: Selection of restart mode<br />
b002: Allowable under-voltage power failure time<br />
b003: Retry wait time before motor restart<br />
b004: Instantaneous power failure/under-voltage<br />
trip alarm enable<br />
b005: Number of restarts on power<br />
failure/under-voltage trip events<br />
b007: Restart frequency threshold<br />
b008: Selection of retry count after undervoltage<br />
C021 to C025: Terminal [11] to [15] functions<br />
C026: Alarm relay terminal function
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