Firmware Manual

9000X AF Drives
MN04004001E
For more information visit: www.eaton.com
8-63
August 2010
Description of Parameters
Figure 8-47: Motor Thermal Current I
T
Curve
704 Motor thermal protection 234567 (P1.7.8)
0 No response
1 Warning
2 Fault, stop mode after fault according to ID506
3 Fault, stop mode after fault always by coasting
If tripping is selected the drive will stop and activate the fault stage. Deactivating this
protection, i.e. setting parameter to 0, will reset the thermal stage of the motor to 0%.
See Page A-4.
705 Motor thermal protection:
Motor ambient temp. factor
234567 (P1.7.9)
The factor can be set between -100.0% – 100.0%. See Page A-4.
706 Motor thermal protection:
Motor cooling factor at zero
speed
234567 (P1.7.10)
The current can be set between 0 – 150.0% x I
nMotor
. This parameter sets the value for
thermal current at zero frequency. See Figure 8-47.
The default value is set assuming that there is no external fan cooling the motor. If an
external fan is used this parameter can be set to 90% (or even higher).
Note: The value is set as a percentage of the motor nameplate data, ID113 (nominal
current of the motor), not the drive’s nominal output current. The motor’s nominal
current is the current that the motor can withstand in direct on-line use without being
overheated.
If you change the parameter Nominal current of motor, this parameter is
automatically restored to the default value.
Setting this parameter does not affect the maximum output current of the drive which
is determined by ID107 alone. See Page A-4.
100%
0
Overload Area
ID706=40%
Cooling
P
f
f
n
I
T