264
Parameter listing and descriptions
ACH550-01 User's Manual
5 =
THERM
(0) – Sensor configuration uses a thermistor.
• Motor thermal protection is activated through a digital input. Connect
either a normally closed thermistor relay or a PTC sensor to a digital
input.
• When the digital input is ‘0’, the motor is overheated.
• See the connection figures on page
262
.
• The table below and the graph on page
263
show the resistance
requirements for a PTC sensor connected between 24 V and digital
input as a function of the motor operating temperature.
6 =
THERM
(1) – Sensor configuration uses a thermistor.
• Motor thermal protection is activated through a digital input. Connect
a normally open thermistor relay to a digital input.
• When the digital input is ‘1’, the motor is overheated.
• See the connection figures on page
262
.
3502
INPUT SELECTION
1…8
Defines the input used for the temperature sensor.
1 =
AI
1 – PT100 and PTC
2 =
AI
2 – PT100 and PTC
3…8 =
DI
1…
DI
6 – Thermistor and PTC.
3503
ALARM LIMIT
-10…200 °C
Defines the alarm limit for
0…5000 ohm
the motor temperature measurement.
0…1
• At motor temperatures above this limit, the drive displays an alarm
(2010,
MOTOR
TEMP
)
For thermistors or PTC connected to digital input:
0 – De-activated.
1 – Activated.
3504
FAULT LIMIT
-10…200 °C
Defines the fault limit for
0…5000 ohm
the motor temperature measurement.
0…1
• At motor temperatures above this limit, the drive displays a fault (9,
MOT
OVERTEMP
) and stops the drive.
For thermistors or PTC connected to digital input:
0 – De-activated.
1 – Activated.
Code Description
Range
Temperature
Resistance
Normal
< 3 kohm
Excessive
>
28
kohm
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