ABB ACS850 - Page 147

Parameters 147
Pt100 Ext x1 The temperature is supervised using a Pt100 sensor
connected to the first available analog input and analog
output on I/O extensions installed on the drive.
10
Pt100 Ext x2 The temperature is supervised using two Pt100 sensors
connected to the first available analog input and analog
output on I/O extensions installed on the drive.
11
Pt100 Ext x3 The temperature is supervised using three Pt100 sensors
connected to the first available analog input and analog
output on I/O extensions installed on the drive.
12
31.03 Mot temp1 almLim Defines the alarm limit for motor thermal protection 1 (when
parameter 31.01 Mot temp1 prot is set to either Alarm or
Fault).
0 … 200 °C Motor overtemperature alarm limit. 1 = 1 °C
31.04 Mot temp1 fltLim Defines the fault limit for the motor thermal protection 1 (when
parameter 31.01 Mot temp1 prot is set to Fault).
0 … 200 °C Motor overtemperature fault limit. 1 = 1 °C
31.05 Mot temp2 prot Selects how the drive reacts when motor overtemperature is
detected by motor temperature protection 2.
No Motor temperature protection 2 inactive. 0
Alarm The drive generates alarm MOTTEMPAL2 when the
temperature exceeds the alarm level defined by parameter
31.07 Mot temp2 almLim.
1
Fault The drive generates alarm MOTTEMPAL2 or trips on fault
MOTTEMP2 when the temperature exceeds the alarm/fault
level defined by parameter 31.07 Mot temp2 almLim / 31.08
Mot temp2 fltLim (whichever is lower).
2
31.06 Mot temp2 src Selects the means of temperature measurement for motor
thermal protection 2. When overtemperature is detected the
drive reacts as defined by parameter 31.05 Mot temp2 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 JCU The temperature is supervised using a KTY84 sensor
connected to drive thermistor input TH.
1
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
No. Name/Value Description FbEq