ABB Contrac PME120AI Anleitung Handbuch - Seite 16

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12. Troubleshooting

This section only describes how to handle hardware errors. Refer to the configuration program's online

help for errors related to the software.

Valve cannot be moved by actu-

ator

Actuator does not react

Actuator does not work in auto-

matic mode, although "AUT" has

been selected in the configura-

tion program

LEDs on the commissioning and

service field are flashing simulta-

neously

Table 7:

12.1 Electrical test values

Figure 15: Motor block diagram

Table 8:

Error

Malfunction of actuator or valve

(e.g. cable gland fastened too

tightly)

No communication

Motor / brake is defective

Digital inputs of electronics are

not connected

Brake does not release (no audi-

ble "click" noise)

Digital input 1 (DI 1) has not been

connected.

Actuator has not been adjusted

properly

Winding resistance ± 5% at 20° C (motor)

Winding resistance ± 5% at 20° C (brake)

Possible reason

Measures to be taken

Disconnect the actuator from the

valve.

If the actuator is working prop-

erly then, the valve is likely to be

defective. Otherwise, the actua-

tor seems to be the error source.

Set up communication using the

configuration program

Check the winding resistances

of the motor and brake.

Connect

Check the air gap (should be

around 0.25 mm) and the electri-

cal connection of the brake.

Check the winding resistance of

the brake coil.

Connect DI 1.

Adjust the actuator.

(r00334x1)

L1 (blue) - L2 (black):3,4 Ω

L1 (blue) - L3 (violet):3,4 Ω

50 Ω