Operation Selection After Cooling Fan Fault - Omron SYSDRIVE RV Series User Manual

Application Precautions
The number of auto restarts count is reset under the following conditions:
•
After auto restart, normal operation has continued for 10 minutes.
After the protection operation has been performed, and the fault has been verified, and an fault reset
has been input.
After the power supply is turned OFF, and then ON again.
Do not use the auto restart function with variable loads.
•

Operation Selection After Cooling Fan Fault

Use the parameter setting to select the operation of the motor after a cooling fan fault occurs. This function can
be used for times when a motor should not be stopped quickly (with an emergency stop.)
Related Parameters
Param-
eter
Number
OH1 detec-
tion of
Inverter' s
L8-32
cooling fan
OH1 Detect
Sel
The following table describes the operation of the motor and the display of the Digital Operator in accordance
with the settings of the L8-32 if a cooling fan fault occurred.
Setting
Value
0
1
* If L8-32 is set to 0, the motor will continue running even if a cooling fan fault occurred. However, the Inverter rated output current and the
overload capacity will be reduced. The rated output current will be reduced to 80% if the normal rated output current is 100%, and the overload
capacity will be reduced to the values as follows.
When CT is selected: 100% per every 3 minutes, 150% per every 15 seconds
When VT is selected: 100% per every 30 seconds, 120% per every 10 seconds
IMPORTANT
-78
6
Name
Description
Display
0: Disabled (FAN minor
fault detection)
1: Enabled (OH1 major
fault detection)
Fault Digital Operator
Cooling Fin Overheating OH1 (lit)
Inverter's Cooling Fan Fault FAN (blink)
Cooling Fin Overheating OH (lit)
Inverter's Cooling Fan Fault OH1 (lit)
If L8-32 is set to 0, be sure to set H2-01 to H2-03 multi-function contact outputs to 10 (minor fault) or to 3D
(Inverter's cooling fan fault.) If a cooling fan fault occurs, stop the Inverter immediately and replace the cool-
ing fan. If the Inverter continues to run while a cooling fan fault occurs, the Inverter's cooling ability will be
affected and the Inverter's internal temperature will increase and shorten the Inverter's life.
During a cooling fan fault, the cooling fan stops for about 3 seconds every minute (interval operation.)
Control Methods
Change
Setting Factory during
Range Setting Opera-
V/f
tion
0,1 1 No A
Motor Operation
Coast to a stop
*
Continue operation
Coast to a stop
Coast to a stop
Regis-
V/f Open Flux
ter
with Loop Vec-
PG Vector tor
A A A 4E2H
Multi-function Con-
tact Output
Fault
Minor fault
Fault
Fault