Rockwell Automation 1305 AC Drive, Series A and B, Firmware 4.xx-5.xx - Manual (Page 113)

Chapter 5 – Programming
5-41
Faults Group (cont.)
➀
Line Loss Fault “U Volt Run” (Disabled) Line Loss Fault “F03 Enable” (Enabled)
No Fault
No Fault
No Fault
Power Loss Fault
Undervolt
Fault
100% Nominal
Bus Voltage
85% Nominal
Bus Voltage
Minimum Bus
Voltage
100% Nominal
Bus Voltage
85% Nominal
Bus Voltage
Minimum Bus
Voltage
Undervolt
Fault
➀ Minimum bus voltage is approximately 70% of Line Voltage
➀
Output Power is on
Output Power is on
No Output Power
No Output
Power
Output Power is on
T
1
T
2
T
3
T
4
T
5
T
6
Application Notes: If line loss is set to ‘‘U Volt Run” and [Run On Power Up] is enabled, the drive will run as long as the bus
voltage is high enough to maintain logic.
To obtain longer power ride-thru, choose “U Volt Run”. This allows the output power to be on from time T
1
to T
3
. To obtain a
longer control ride–thru, choose “F03 Enable”. The output power devices are turned off at time T
5
but note that time T
6
– T
5
is
greater than time T 3 – T 2 .
[Flt Clear Mode] Parameter # 39 Factory Default ‘‘Enabled” [Flt Clear Mode]
Parameter Type Read & Write
This parameter controls the method for clearing faults. Units None Setting ‘‘Enabled” Faults Cleared By Issuing a Valid Stop Command or
Cycling Input Power
‘‘Disabled” Faults Cleared Only By Cycling Input Power