ABB DriveIT ACH550-01 User Manual page 262

Code Description
3 = 3 x PT100 –
Sensor configuration
uses three PT 100
sensors.
• Operation is the
4 =
configuration uses
one PTC.
• The analog output
• The resistance of the sensor increases sharply as the motor
• The figure shows typical PTC sensor resistance values as a
5 =
• Motor thermal protection is activated through a digital input.
• When the digital input is '0' the motor is overheated.
• See the figures in the introduction to this Group.
6 =
• Motor thermal protection is activated through a digital input.
• When the digital input is '1' the motor is overheated.
See the figures in the introduction to this Group.
3502 INPUT SELECTION
Defines the input used for the temperature sensor.
1 =
2 =
3...7 =
8 =
258
same as for above
1 x PT100.
– Sensor
PTC
feeds a constant
current through the
sensor.
temperature rises over the PTC reference temperature (T
as does the voltage over the resistor. The temperature
measurement function reads the voltage through analog
input 1 and converts it into ohms.
AI
function of the motor operating temperature.
Temperature
Normal
Excessive
(0) – Sensor configuration uses a thermistor.
THERMISTOR
Connect either a PTC sensor or a normally closed thermistor
relay to a digital input. The drive reads the digital input states
as shown in the above table.
(1) – Sensor configuration uses a thermistor.
THERMISTOR
Connect a normally open thermistor relay to a digital input.
The drive reads the digital input states as shown in the
above table.
1 - PT100 and PTC.
AI
2 - PT100 and PTC.
AI
1... 5 – Thermistor relay
DI DI
6 - PTC Thermistor
DI
ACH550 User's Manual
Range
Ohm
4000
1330
550
100
Resistance
0 ... 1.5 kohm
> 4 kohm
1...8
Parameter listing and descriptions
T
),
ref