Product specifications

Section 5 Maintenance DriveBus Interface - CI858
3BSE036351-510 A 219
DriveBus Interface - CI858
Table 38. DriveBus CI858 – Fault-Finding
Fault Possible Cause and Corrective Action
Neither R(un) nor F(ault) LEDs
are ON
The CI858 board is in the process of being
restarted or configured. Allow time for this to
finalize
If the condition persists, and no other unit LED on
the CEX-Bus is lit:
• Check that a valid HW configuration including
the CI858 is downloaded to the controller.
• Check the CEX-Bus fuse inside the
processor unit.
• Initiate a reset signal (INIT) from the
processor unit.
• Replace the CI858 unit.
F(ault) LED is ON Unit error or initializing.
Check all cables and connectors for damage and
loose or poor connections.
• Repair as necessary.
Dbus;Rx1 LED is ON (not
flashing)
The unit is not receiving data.
• Check all cables and connections.
• Replace the CI858 unit.
Dbus;Rx1 LED is OFF No signals are sent to the unit or unit error.
• Check all cables and connections.
• Replace the CI858 unit.
Dbus;Tx1 LED is ON (not
flashing)
The unit is not transmitting data.
• Check the CB for a failure message.
• If there is no failure message in the CB
replace the CI858 unit.