Rockwell Automation 20G PowerFlex 750-Series AC Drives - Manual (Page 171)

Rockwell Automation Publication 750-RM002B-EN-P - September 2013 171
Diagnostics and Protection Chapter 3
The ratio of 1:20 is the same for all durations of 150%. When operating
continuous at 100%, if the load increases to 150% for 1 second the load must
then return to 100% for 20 seconds before another step to 150%.
Activating Motor Overload
To turn on Motor Overload protection, configure P410 [Motor OL Actn]. This
activates the function. Default setting is 3 “FltCoastStop.” The following bits
configure P410 [Motor OL Actn].
• “Ignore” (0) – No action is taken.
• “Alarm” (1) – Type 1 alarm indicated.
• “Flt Minor” (2) – Minor fault indicated. If running, drive continues to
run. Enable with P950 [Minor Flt Cfg]. If not enabled, acts like a major
fault.
• “FltCoastStop” (3) – Major fault indicated. Coast to Stop.
• “Flt RampStop” (4) – Major fault indicated. Ramp to Stop.
• “Flt CL Stop” (5) – Major fault indicated. Current Limit Stop.
%FLA Cold Trip Time Hot Trip Time
105 6320 5995
110 1794 1500
115 934 667
120 619 375
125 456 240
130 357 167
135 291 122
140 244 94
145 209 94
150 180 60
155 160 50
160 142 42
165 128 36
170 115 31
175 105 27
180 96 23
185 88 21
190 82 19
195 76 17
200 70 15
IMPORTANT If the application requires high overload current for long durations (for
example 150% for 60 seconds), heavy duty sizing (between drive and motor)
is required.