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MAN - BBR3 - REV: Original | E. Operation
You can also click on either end of any of the scales to change that value to zoom in on just part of the graph. Keep in
mind that pressing the TIME switch will reset this.
E.9 Diagnostics
When you press the DIAGNOSTICS button the screen in Figure E.19 will be shown.
You should not have permission for this screen unless you are experienced with the machine and what it does.
There are no safety features in this screen. It should mostly be use for maintenance to trouble shoot I/O problems.
The diagnostics button will not be shown on the main menu unless the currently logged in user has permission for
this screen.
Analog Inputs AI1, AI2, and AI3
Raw voltages into the system. You should be able to use a voltmeter to test the voltage at the input pin and it should
match what is shown here. AI1 is deflection, AI2 is load, and AI3 is not used on a mechanical chiller system.
Analog Outputs AO1 and AO2
Raw voltages out of the system. Use a voltmeter to test the voltage at the output pin and verify that it matches the
value shown on the diagnostics screen.
Digital Inputs 1, 2, 3, and 4
Raw values into the system. Use a voltmeter to test the state at the input pin and verify that it matches the value
shown on the diagnostics screen. The BBR3 does not currently use any of the digital inputs.
Figure E.19 - Diagnostics main software screen