OMRON Sysdrive 3G3HV - Detector Cooling Section

Set Values
Set
Description
value
0 Inhibits overheating protection from functioning.
1 Permits overheating protection to function.
n080
Input Open-phase Detection Level
Setting range 1 to 100 Unit (400/800 VDC
as 100%)
n081
Input Open-phase Detection Time
Default setting
Setting range 2 to 255 Unit x 1.28 s Default setting
7
8
• The parameters n080 and n081 are used to set the input phase loss
detection function.
• It is usually not necessary to change the default-set values.
• The Inverter will not detect input phase loss if n080 is set to 100.
• Set n080 of the 200-V Inverter based on 400 VDC as 100% and that of
the Inverter of 400-V class based on 800 VDC as 100%.
• The input phase loss detection function is used to detect the voltage
ripples that will be generated from the main circuit DC power supply
when input phase loss results.
The Inverter will detect input phase loss if the voltage width of the voltage
ripples of the main circuit DC power supply exceeds the range set
with n080 for a period exceeding the time set with n081.
• If the power supplied to the Inverter has ripples, set n080 or n081 to a
large value so that the Inverter will not detect input phase loss.
n082
Output Open-phase Detection Level
Setting range 0 to 100 Unit % (Rated output
current ratio)
n083
Output Open-phase Detection Time
Default setting
Setting range 0.0 to 2.0 Unit s Default setting
0
0.2
• The parameters n082 and n083 are used to set the output phase loss
detection function.
• The Inverter will not detect output phase loss if n082 is set to 0. The
default-set value of n082 is 0.
• When an output phase loss occurs, the Inverter will detect a decrease
in the output current of the phase.
• To use the output phase loss detection function, refer to the following
procedure and set with n082 an appropriate output phase loss detection
level.
Start the motor with no load.
Use the Digital Operator and monitor the amperage of the output current.
Calculate the percentage of the output current based on the rated output current as 100%.
Set n082 to half the number calculated.