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5.3.10 Drive and Motor Protections
OVERLOAD
H28:
Over Load Level (Factory Default: 150%)
Range:30 - 150%
H29: Over Load Time (Factory Default: 10.0 Sec.)
Range:0.1 - 30 sec.
This function is used to provide a motor overload warning. When the output current
of the drive has reached the value of H28, Oveload Level, the Multi-Function Output
terminal will be activated, if programmed. However, for an Overload Signal to occur,
H28 and H29, Overload Time, must be set to the desired trip value. As there is only
one Multi-Function Output available, there will be no brake control, therefore it is
advised this function NOT be used in hoist applications. See Fig. 5.3.12.
Fig. 5.3.12: Multi-Function Output response to Overload Parameter
If the over load condition continues
for more than H29, an external
multifunction output terminal will be
turned on if F9 is set to Over Load.
Output current
time
Overload level H28
B3 – B4
H29
½ H29
ON
time