ABB Advant Controller 450 User Manual

Advant
®
Controller 450 User’s Guide
Section 2.5.3 Commissioning
3BSE 002 415R701 Rev A 2-73
2.5.3.8 Listing of Executing Unit Status
List the status of all executing units with the command LSS (List Special Status).
The following are examples of status listed.
• If an executing unit is in the build mode.
• If an executing unit is blocked.
• If the output from an executing unit to the data base is blocked.
• If a PC program is locked.
2.5.3.9 Check of Process Input/Output System
General
As mentioned in the setup instructions for process I/O, it is advantageous to make an integrated
check of process equipment and wiring and the corresponding control function. You make this
check in a circuit-by-circuit procedure. The data base is then used as one checkpoint.
An engineering station reads status/values and simulates control signals to the process objects.
When an operator station is included in the system, it is most effective to maintain the check
from the automatically generated process I/O object displays.
You may need to simulate digital and analog input signals which are normally generated by the
process. Suitable methods to do this follow:
• Digital inputs: Activate the input by connecting a voltage which corresponds to the
nominal value of the input. The “1” and “0” status is simulated by opening and closing the
terminal switches. Activate the input as close to the process transducer as possible to test
the process wiring as far as possible.
Manual operation of transducers, for example, limit switches can also give the required
change for the input signals.
• Analog input signals: Use a signal generator for analog signals.
Use a simple test coupling as a voltage generator. This consists of a potentiometer coupled
over a suitable voltage source which gives
±
voltage.
A current source which can give sufficient current, 20 mA, is required for current signals.
Enter analog test signals as close to the ordinary signal generator as possible to test the
process wiring.
Digital and analog output signals are obtained by setting the required values in the data base via
the engineering station. This means entry of values from the keyboard for the data base elements
concerned (property VALUE).
The system designer provides test specifications with the limits permitted.
As each channel is tested and approved, you can set a test flag “TESTED” in the data base with
the help of MDB. This is not essential, however, for the program function since you can use
simpler methods such as marking the channels on the connection diagram to register the test
procedure.

ABB Advant Controller 450 Specifications

General

Brand	ABB
Model	Advant Controller 450
Category	Controller
Language	English