Furthermore, different fieldbus interface states can be requested via the ACExC 01.2
display (Menu
Diagnostic M0022
). For further information, please refer to “Manual
(Device integration fieldbus) AC 01.2/ACExC 01.2”.
4.2.1
Line and star topology
Table 5:
Troubleshooting table
Causes and remedies
→
Continue with 4
Yes
Can actuator be controlled
via fieldbus?
1
→
Continue with 2
No
FO coupler supplied with voltage (24 V DC).
→
Continue with 4
Yes
Green LED [U
L
] illumina-
ted?
2
→
Continue with 3
No
Possible causes and remedies:
FO coupler is defective
→
Replace coupler.
Power supply (24 V DC)
available?
Verify power supply
(24 V DC) of the FO
coupler:
3.
Remedies:
→
Check fuses within ACExC 01.2.
→
Restore power supply.
Power supply (24 V DC)
not available?
Possible causes:
●
Sender on coupler defective
●
FO connection of sender not operable
Yes
Is yellow LED [BA] flicke-
ring?
4
Possible causes:
●
Slave not properly connected
●
Slave defective
●
Master defective
●
FO coupler receiver or FO connection of receiver defective
●
Is the required FO coupler (BARTEC order no.: 07-7311-
97WP/6000 or /4000) installed at the master?
No
4.2.2
Ring topology
Troubleshooting
●
Is the connection between FO coupler and device correct?
●
Have all screw-type terminals been tightened correctly?
●
Has the proper interface been selected?
●
Is the transmission distance too long?
●
Is the optical sender connected to the optical receiver of the opposite device?
●
Are the bus termination resistors activated?
●
Is an FO coupler, type BARTEC 07-7311-97WP/5400, connected to the fieldbus
master?
●
Is there more than one master module in the ring?
Table 6:
Troubleshooting table
Causes and remedies
No fault
Yes
Can actuator be controlled
via fieldbus?
1
→
Continue with 2
No
FO coupler supplied with voltage (24 V DC).
→
Continue with 6
Yes
Green LED [U
L
] illumina-
ted?
2
→
Continue with 3
No
Possible causes and remedies:
FO coupler is defective
→
Replace coupler.
Power supply (24 V DC)
available?
Verify power supply
(24 V DC) of the FO
coupler:
3.
Remedies:
→
Check fuses within ACExC 01.2.
→
Restore power supply.
Power supply (24 V DC)
not available?
13
Corrective action
