ABB Advant Controller 450 User Manual

Advant
®
Controller 450 User’s Guide
Section 5.5.10 User Repair
3BSE 002 415R701 Rev A 5-73
During the time of replacement the backup power supply will indicate F (Fail) and BF (Battery
Fail). This is observed in the system status display in the operator station too.
Possibly will, at low battery temperature, the red F LED on the backup power supply still be ON
under a few minutes after replacement.
NOTE
The battery includes cadmium and shall be treated as hazardous waste.
5.5.10.8 Replacement of Connection Unit
General
It is important to understand the consequences of a connection unit exchange on-line and how it
affects the current situation, for example:
Replacement of a connection unit affects all channels on the corresponding I/O board.
It also sometimes indirectly affects the outputs via some application function, for example
a closed loop control.
Practical Execution
Replace faulty or suspect connection units as described below.
1. See that process connections (signals and power supply) are disconnected before starting
the replacement work.
Determine where it is easiest to disconnect on a case-by-case basis because of the
differences in different applications. In some cases, you can disconnect the signals/power
supply at a cross-coupling, in other cases, at process transducers and at the location where
the power supply is distributed.
2. Disconnect the internal cable which joins the connection unit and corresponding circuit
board.
3. Label the leads so that they can be connected to the new unit correctly.
4. Disconnect the leads. Unscrew the fixing screws. Remove.
5. Install the new unit in the reverse order. Ensure that the screws make contact with the
tinned surface of the earth plane of the circuit board for effective grounding.
6. Test the function.

ABB Advant Controller 450 Specifications

General

Brand	ABB
Model	Advant Controller 450
Category	Controller
Language	English