Automatic Fault Retry; Automatic Restart After Momentary Power Loss; Carrier Frequency - Saftronics FP5 Series User Manual

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Automatic Fault Retry (n060, Num of Restarts)
After a fault occurs, the inverter can automatically restart. The number of
retry attempts can be set up to 10 times via parameter n060. The inverter
can be set to automatically restart after the following faults occur:
· Overcurrent (OC)
· Overvoltage (OV)
· Undervoltage PUV (UV1)
· Ground fault (GF)
· Regenerative transistor fault (RR)
The number of retry attempts are cleared to "0" in the following cases:
· If no other fault occurs within 10 minutes after retry.
· When the fault reset signal is ON (closed) after the fault is detected.
· Power supply is turned OFF.
Automatic Restart After Momentary Power Loss (n055, PwrL Selection)
When momentary power loss occurs, operation restarts automatically. The
run command must remain closed for this feature to function properly.
LED Setting
0
1 * 2 Seconds Max
2 ** CPU Power Active Continuous operation after power recovery within control logic
* Holds the operation signal to continue operation after recovery from momentary power loss.
** When "CPU Power Active" is selected, operation restarts if power supply voltage returns to its
normal level (level before power loss). No fault signal is output.
Carrier Frequency (n054, Carrier Freq Sel)
This function sets the inverter output transistor switching frequency (car-
rier frequency). This is used to reduce motor noise and leakage current.
The factory setting for carrier frequency is the maximum allowable car-
rier frequency at which inverter rated current can continuously be gener-
ated. Consult the factory when increasing the carrier above the default
values.
Carrier Frequency (kHz)
LED Setting
1
2
3
4
5
6
FP5/GP5 User's Manual
Chapter 3 - Programming Features
LCD Setting
Not Provided Not provided (factory default)
Continuous operation after power recovery within 2 seconds
time (no fault output)
Metallic Noise from Motor
LCD Setting
Louder
2.5
5.0
8.0
10.0
12.5
Inaudible
15.0
FP5/GP5 Operation
Description
Leakage Current
Smaller
Larger
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