4 — PROGRAMMABLE PARAMETERS
pg. 145
Return to TOC Curtis AC F2-A, F4-A, F6-A Motor Controllers – FOS 4.5 – April 2022
MOTOR SETUP — TEMPERATURE SENSOR MENU
PARAMETER ALLOWABLE RANGE DEFAULT DESCRIPTION
Sensor Enable
MotorTemp_Sensor_Enable
0x3686 0x00
On/Off
On/Off
Off When programmed On, this parameter enables both the motor
temperature cutback and the motor temperature compensation
features. For this parameter to be valid, properly congure the
temperature sensor.
The motor temperature cutback feature linearly cuts back
the current from 100% to 0% between the Temperature Hot
and Temperature Max temperatures. The motor temperature
compensation feature will adapt the motor control algorithms to
varying motor temperatures for improved efciency and a more
consistent performance.
Temperature
Motor_Temperature
0x3536 0x00
–100.0 – 300.0°C
–1000 – 3000
Read Only Temperature sensor readout.
Motor Temp Cutback
MotorTempCutback
0x3439 0x00
0.00 – 100.00 %
0 – 4096
Read Only Displays the available current resulting from the motor
temperature cutback function. A value of 100% indicates no
cutback in current.
Braking Thermal Cutback
Enable
MotorBrakingThermalCutback_
Enable
0x3680 0x00
Off – On
0 - 1
Off When programmed On, drive current and all forms of regen
braking current will be cut back based on motor temperature.
This applies to all forms of regen braking current (Regen_
Current_Limit, Brake_Current_Limit, EMR_Current_Limit,
Interlock_Brake_Current_Limit) and includes emergency reverse
braking, interlock braking, brake input braking, direction reversal
braking, neutral braking and speed limit braking.
If the vehicle has mechanical brakes, setting this parameter to On
may help reduce motor heating.
When programmed Off, only drive current (and not the regen
braking currents) will be cut back based on motor temperature.
CAUTION: Contact Curtis support to make changes. Enabling
will affect regen current cutback causing braking distance to
increase when motor or controller is hot. Do not enable without
independent braking system.
Temperature Hot
MotorTemp_Hot
0x3683 0x00
0 – 250°C
0 – 2500
145°C
Denes the temperature at which current cutback begins.
Temperature Max
MotorTemp_Max
0x3685 0x00
0 – 250°C
0 – 2500
160°C
Denes the temperature at which current cutback is zero.
Motor Temp LOS Max Speed
MotorTemp_LOS_Max_Speed
0x3684 0x00
100 – 24000 rpm
100 – 24000
800 rpm When a Motor Temp Sensor Fault (fault code 29) is set, it engages
the LOS (Limited Operating Strategy) mode. This reduces the
maximum speed to the programmed Max Speed. The speed is
the lower of the speed mode’s settings (Max_Speed_SpdMx or
Max_Speed_SpdM), or the MotorTemp_LOS_Max_Speed setting,
whichever is lower.
Sensor Type
MotorTemp_Sensor_Type
0x3688 0x00
0 – 4*
0 – 4
* Enumeration:
Custom
KTY83
KTY84-130
KTY84-150
PT1000
4 Sensor types are predened in the software:
Type 0- Custom
Type 1 KTY83-122
Type 2 KTY84-130
Type 3 KTY84-150
Type 4 PT1000
Custom sensor types are congurable, if none of the ve predened
types are appropriate for the application. Low resistance sensors,
such as the PT100, are not congurable.
Note: KTY silicon temperature sensors have a polarity band,
which must be the end connected to I/O Ground.