ABB ACS 501 - Page 54

Chapter 5 – Fault Tracing
ACS 501 Installation & Start-up Manual 5-7
Figure 5-2 ACS 501 Temperature Warning/Fault Flowchart
Table 5-1 Fault Message Table
Application Rating
Enclosure Type
NEMA 1 NEMA 12
Constant Torque 113°F (45°C) 104°F (40°C)
Variable Torque 104°F (40°C)
ACS 501 Temp
Warning/Fault.
Check ambient
temperature
per chart below.
Check cooling
air flow.
Air flow OK?
Heat fins
dusty?
Clear restrictions
to air flow.
Clean dust from
heatsink fins.
Ambient
temperature
>104°F.
Restart system
and check for
faults.
Re-size ACS 501
for this application or
add extra cooling.
Internal fault.
Contact ABB
Technical Support.
No
Yes
Yes No
Yes
No
No
Yes
Ambient
temperature
<104°F.
Switching
Freq. 3kHz.
Reduce Switching
Frequency to 3 kHz.
No
Yes
<_