ABB ACSM1 - Page 170

Parameters and firmware blocks
170
(0) ESTIMATED The temperature is supervised based on the motor thermal protection
model, which uses the motor thermal time constant (parameter 45.10
MOT THERM TIME) and the motor load curve (parameters
45.06…45.08). User tuning is typically needed only if the ambient
temperature differs from the normal operating temperature specified
for the motor.
The motor temperature increases if it operates in the region above the
motor load curve. The motor temperature decreases if it operates in
the region below the motor load curve (if the motor is overheated).
WARNING! The model does not protect the motor if it does not
cool properly due to dust and dirt.
(1) KTY JCU The temperature is supervised using a KTY84 sensor connected to
drive thermistor input TH.
(2) KTY 1st FEN The temperature is supervised using a KTY84 sensor connected to
encoder interface module FEN-xx installed in drive Slot 1/2. If two
encoder interface modules are used, encoder module connected to
Slot 1 is used for the temperature supervision. Note: This selection
does not apply for FEN-01. *
(3) KTY 2nd FEN The temperature is supervised using a KTY84 sensor connected to
encoder interface module FEN-xx installed in drive Slot 1/2. If two
encoder interface modules are used, encoder module connected to
Slot 2 is used for the temperature supervision. Note: This selection
does not apply for FEN-01. *
(4) PTC JCU The temperature is supervised using 1…3 PTC sensors connected to
drive thermistor input TH.
(5) PTC 1st FEN The temperature is supervised using a PTC sensor connected to
encoder interface module FEN-xx installed in drive Slot 1/2. If two
encoder interface modules are used, encoder module connected to
Slot 1 is used for the temperature supervision. *
(6) PTC 2nd FEN The temperature is supervised using a PTC sensor connected to
encoder interface module FEN-xx installed in drive Slot 1/2. If two
encoder interface modules are used, encoder module connected to
Slot 2 is used for the temperature supervision. *
*Note: If one FEN-xx module is used, parameter setting must be either (2) KTY 1st FEN or (5) PTC
1st FEN. The FEN-xx module can be in either Slot 1 or Slot 2.
45.03 MOT TEMP ALM LIM FW block: MOT THERM PROT (see above)
Defines the alarm limit for the motor overtemperature protection (when par. 45.01 MOT TEMP PROT
= (1) ALARM/(2) FAULT).
0…200 °C Motor overtemperature alarm limit.
45.04 MOT TEMP FLT LIM FW block: MOT THERM PROT (see above)
Defines the fault limit for the motor overtemperature protection (when par. 45.01 MOT TEMP PROT =
(2) FAULT).
0…200 °C Motor overtemperature fault limit.