Rockwell Automation 1302 575v AC Drive - Canada Only - Manual (Page 70)

8–12 Programming
Publication 1302-5.0 — January, 1998
FĆ14 Electronic Thermal Overload
This parameter sets the trip level
for the electronic thermal
overload fault (OL) when
FĆ15 = ON.
Parameter Range:
Default Setting:
Step Size:
20% to 100% rated current
100%
1%
This parameter should be adjusted if the motor current rating is less than the Drive current rating.
Use the formula below to calculate the setting level as a percentage of maximum continuous current:
FĆ14 = Motor Full Load Current
Drive Output Rated Current
x 100
The motor full load current value can be found on the motor nameplate. See Table 2.A or the Drive
nameplate for the Drive rated output value.
FĆ15 Electronic Thermal Overload Enable
This parameter enables or
disables the electronic motor
thermal overload function. This
function operates like a motor
thermal switch to protect the
motor from overheating.
Parameter Range:
Default Setting:
Step Size:
OFF = No electronic thermal overload
protection.
ON = Electronic thermal overload
protection is active.
ON
N/A
!
ATTENTION: Parameter FĆ15 must be set to ON in single motor applications to guard against
damage from overheating or combustion of surrounding materials. Failure to observe this
precation could result in fire or damage to or destruction of the motor and the drive.
When FĆ15 = ON, the Drive faults if it exceeds the thermal overload time (60 seconds at 150% of FĆ14).
When an external thermal switch or other overtemperature monitoring device is connected to the function
loss circuit (terminals 10 and 11), this parameter may be set ON or OFF.
For multiĆmotor applications, set this parameter to OFF. The individual motors must have thermal switch
protection.