To use this function:
•
Set H75 to 1.
•
Set %ED (Enable Duty) in H76.
H76: DB Resistor Operating Rate
Range: 0-30% (Default: 10)
Description: Set the percent of DB resistor operating rate to be activated during one
sequence of operation.
To use this Function:
•
Set the resistor operating rate(%ED) in one sequence of operation.
Continuous usage reate is Max 15 sec and usage signal is not issued over
15 sec.
Example 1)
H
Tdec
TaccTdecTstop
76 100=
++
´
_
___
[%]
Where,
T_acc: Acceleration time to reach a setting freq.
T_steady: Time for constant speed operation at setting freq.
T_dec: Time to decelerate to lower freq. than that in constant speed.
or time to stop from freq. in constant speed.
T_stop: waiting time at a stop before operation is resumed.
104
6 - Parameter Descriptions
Freq.
T_acc
T_steady
T_dec
T_stop
Take caution when DB resistor is used over its Watt
rating. Fire may result from resistor overheat. When using
a resistor with a thermal switch, program one of the
multi-function outputs to an external trip.
CAUTION
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