256
Parameter listing and descriptions
ACH550 User's Manual
Code Description
Range
3501
SENSOR TYPE
0…6
Identifies the type of the motor temperature sensor used, PT100 (°C) or
PTC (ohms).
See parameters 1501 and 1507.
0 =
NONE
1 = 1 x PT100 – Sensor configuration uses one PT100 sensor.
• Analog output
AO
1 or
AO
2 feeds constant current through the
sensor.
• The sensor resistance increases as the motor temperature rises, as
does the voltage over the sensor.
• The temperature measurement function reads the voltage through
analog input
AI
1 or
AI
2 and converts it to degrees centigrade.
2 = 2 x PT100 – Sensor configuration uses two PT100 sensors.
• Operation is the same as for above 1 x PT100.
3 = 3 x PT100 – Sensor configuration uses three PT100
sensors.Operation is the same as for above 1 x PT100.
4 = PTC – Sensor configuration
uses one PTC.
• The analog output feeds a
constant current through the
sensor.
• The resistance of the sensor
increases sharply as the
motor temperature rises
over the PTC reference
temperature (
T
ref
), as does
the voltage over the resistor.
The temperature
measurement function
reads the voltage through
analog input
AI
1 and
converts it into ohms.
• The figure shows typical PTC sensor resistance values as a function
of the motor operating temperature.
100
550
1330
4000
ohm
T
Temperature
Resistance
Normal
0 … 1.5 kohm
Excessive
> 4 kohm
Summary of Contents for ACH550-01
Page 1: ...ACH550 User s Manual ACH550 01 Drives 0 75 110 kW ACH550 UH Drives 1 150 HP ABB ...
Page 10: ...Update Notice 8 ...
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Page 18: ...6 ACH550 User s Manual ...
Page 50: ...38 Preparing for installation ACH550 User s Manual ...
Page 325: ...313 ACH550 User s Manual ...
Page 358: ...346 ACH550 User s Manual ...
Page 409: ...Technical data 397 ACH550 User s Manual Frame size R1 IP54 UL Type 12 ...
Page 410: ...398 Technical data ACH550 User s Manual Frame size R2 IP54 UL Type 12 ...
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Page 415: ...Technical data 403 ACH550 User s Manual Frame size R1 IP21 UL Type 1 ...
Page 416: ...404 Technical data ACH550 User s Manual Frame size R2 IP21 UL Type 1 ...
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