ABB RHD8000 Series Manuale di istruzioni - Pagina 16

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12. Troubleshooting

This section only describes how to handle hardware errors. Refer to the configura-

tion program's online help for errors related to the software.

Error

Valve cannot be moved by

actuator

Actuator does not react

Actuator does not work in

automatic mode, although

"AUT" has been selected

in the configuration pro-

gram

LEDs on the commission-

ing and service field are

flashing simultaneously

Fault when approaching

an end position

Table 5:

If actuator end position = valve end position, mount the sensor as described in

section 11.3.2

12.1Electrical test values

Winding resistance ± 5% at 20° C

(motor)

Winding resistance ± 5% at 20° C

(brake)

Table 6:

Possible reason

Malfunction of actuator or

valve (e.g. cable gland fas-

tened too tightly)

No communication

Motor / brake is defective

Digital inputs of electron-

ics are not connected

Brake does not release (no

audible "click" noise)

Digital input 1 (DI 1) has

not been connected.

Actuator has not been

adjusted properly

Actuator is working in the

limit range of the position

sensor

Motor MC 090 BA

3,7 Ohm

1290 Ohm

Measures to be taken

Disconnect the actuator

from the valve.

If the actuator is working

properly then, the valve is

likely to be defective. Oth-

erwise, the actuator

seems to be the error

source.

Set up communication

using the configuration

program

Check the winding resis-

tances of the motor and

brake. Check the brake

fuse.

Connect

Check the air gap (should

be around 0.25 mm) and

the electrical connection

of the brake.

Check the winding resis-

tance of the brake coil.

Connect DI 1.

Adjust the actuator.

- Move the actuator ei-

ther manually or with

the CSF buttons to a

position

beyond

the

end posi-

tion

(disconnect from

valve if required).

- Move actuator back. If

required, reconnect to

to the valve (if applica-

ble)

- Adapt actuator to new

operating range

Motor MC 112 BA

1,4 Ohm

1020 Ohm