ABB ACQ80-04 Series, Firmware Manual

Page: 124 / 270

124 Parameters
35.50 Motor ambient
temperature Defines the ambient temperature of the motor for the motor
thermal protection model. The unit is selected by parameter
96.16 Unit selection .
The motor thermal protection model estimates the motor
temperature on the basis of parameters
35.50 … 35.55 . The
motor temperature increases if it operates in the region above
the load curve, and decreases if it operates in the region
below the load curve.
WARNING! The model cannot protect the motor if the
motor does not cool properly because of dust, dirt, etc.
20 °C or
68 °F
-60…100 °C or
-76 … 212 °F Ambient temperature. 1 = 1°
35.51 Motor load curve Defines the motor load curve together with parameters 35.52
Zero speed load and 35.53 Break point . The load curve is
used by the motor thermal protection model to estimate the
motor temperature.
When the parameter is set to 100%, the maximum load is
taken as the value of parameter
99.06 Motor nominal current
(higher loads heat up the motor). The load curve level should
be adjusted if the ambient temperature differs from the
nominal value set in
35.50 Motor ambient temperature .
100%
50…150% Maximum load for the motor load curve. 1 = 1%
35.52 Zero speed load Defines the motor load curve together with parameters 35.51
Motor load curve and 35.53 Break point . Defines the
maximum motor load at zero speed of the load curve. A
higher value can be used if the motor has an external motor
fan to boost the cooling. See the motor manufacturer's
recommendations.
See parameter
35.51 Motor load curve .
100%
50…150% Zero speed load for the motor load curve. 1 = 1%
No. Name/Value Description Def/FbEq16
50
100
150
35.51
35.53
35.52
I/I
N
(%)
I = Motor current
I
N
= Nominal motor current
Drive output
frequency
ACQ80 FW.book Page 124 Thursday, February 14, 2019 11:33 AM