ABB RCNA-01 Manuel d'utilisateur télécharger pdf (Page 262)

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258 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 256.

• The table below and the graph on page 257 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 256.

3502 INPUT SELECTION 1…8

Defines the input used for the temperature sensor.

1 =

AI1 – PT100 and PTC

2 =

AI2 – PT100 and PTC

3…8 =

DI1…DI6 – 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

1 2 ... 257 258 259 260 261 262 263 264 265 266 267 ... 473 474

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ABB RCNA-01 Manuel d'utilisateur Page 262

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