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4. Parameter description
Parameter
• P.321 set the speed control integration time. (Because of external disturbance to speed changes, the
value will be set to be smaller, so that to reset time of the original speed is shorter.)
Note: 1. If use P.320 to improve the speed control gain, can improve the response time. But if the value is setting
too high will produce vibration and noise.
2. Reduce the speed control integral coefficient P.321, the reset time of the speed variation is shorter, but if
this value is too small, the overshoot will be produced.
4.66 Parameter Copy Function (P.994, P.995)
P.994 “Parameter copy readout”
P.995 “Parameter copy write-in”
● When set value into P.994, P.995, Motor rotation must be in a stop, this parameter value is only
valid when P.77=0 and in PU mode. When using same parameters for several inverter value setting.
Use P.994 and P.995 to perform duplication value to other inverter rapidly.
● Procedures of parameter copy:
1. When the first inverter is in PU mode, the value of P.994 is readout (the screen will
display
) and then press “Write”, at the same time the screen is flickering, it means that
the parameter copy from inverter to operation panel is in process. When no more flickering on
the screen is means the parameter copy is done.
2. When the second inverter is in PU mode, the value of P.995 is readout (the the screen
display
) and then press “write” at the same time, then the screen is flickering it means the
parameter copy from operation panel to inverter EEPROM is in process. When the screen is no
more flickering, the parameter copy is done.
* PU series operation panel need to purchase
Note: 1. Regarding parameter copy function in P.994 and P.995, it is only available on SH-PU series of Inverters.
2. When parameter copy is in process, the value of P.0 to P.390 will be copied and duplicate into Digital Unit
and inverter.
4.67 Alarm History Clear (P.996)
P.996 “Alarm history clear”
● Once P.996 is read out (after read out, the screen will display
) and rewritten in, all the
abnormal event logs are erased.
