ABB ACS850 User Manual

Parameters 195
31
31 Motor therm prot
Motor temperature measurement and thermal protection
settings.
31.01 Mot temp1 prot Selects how the drive reacts when motor overtemperature is
detected by motor thermal protection 1.
No Motor thermal protection 1 inactive. 0
Alarm The drive generates alarm MOTOR TEMPERATURE when
the temperature exceeds the alarm level defined by
parameter 31.03 Mot temp1 almLim.
1
Fault The drive generates alarm MOTOR TEMPERATURE or trips
on fault MOTOR OVERTEMP when the temperature exceeds
the alarm/fault level defined by parameter 31.03 Mot temp1
almLim / 31.04 Mot temp1 fltLim (whichever is lower).
2
31.02 Mot temp1 src Selects the means of temperature measurement for motor
thermal protection 1. When overtemperature is detected the
drive reacts as defined by parameter 31.01 Mot temp1 prot.
Note: If one FEN-xx module is used, parameter setting must
be either KTY 1st FEN or PTC 1st FEN. The FEN-xx module
can be in either Slot 1 or Slot 2.
Estimated The temperature is supervised based on the motor thermal
protection model, which uses the motor thermal time constant
(parameter 31.14 Mot therm time) and the motor load curve
(parameters 31.10…31.12). 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.
0
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 to FEN-01.
2
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 to FEN-01.
3
PTC JCU The temperature is supervised using a PTC sensor
connected to DI6.
4
PTC 1st FEN The temperature is supervised using 1...3 PTC sensors
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.
5
No. Name/Value Description FbEq

ABB ACS850 Specifications

General

Safety	STO (Safe Torque Off)
Communication	CANopen
Enclosure	IP21
Output Voltage	Up to 1000 V DC
Protection Features	Overcurrent, Overvoltage, Undervoltage
Cooling Method	Air or liquid cooling
Input Voltage	380 to 690 V AC