Manual Analyzer Override - Honeywell Vertex VC 4 User Manual

Manual Analyzer Override

The Vertex™ VC4 Analyzer is equipped with a Manual Override button in the event the communications to the
Vertex™ VC4 Data Acquisition (DAq) computer halts. This button activates only when the communications has
completely ceased.
There are cases where the DAq appears to be "frozen" or "locked-up" (no response from the keyboard or
any user invoked actions after a few moments) while in reality this is not the case. Events that could cause
these symptoms include AC power surges or sags and improper shutdowns of the DAq that result in file
corruption. As a result, future attempts to access these files can slow down the response of the DAq. To
confirm a non-responsive DAq as opposed to frozen/locked- up, check the clock located in the upper right
hand corner of the Vertex™ VC4 HMI window. If the clock is still advancing, then the DAq CPU is not
frozen/locked-up and your local Authorized Service Center needs to be contacted for assistance.
On occasions, there may be the need to install a new Chemcassette® to continue monitoring your facility, or to
reset alarms or faults. If the DAq is not responding, these tasks can be performed using the "Manual Override"
button. An extra step may be required to "force" activation of the "Manual Override" button under the above
mentioned conditions if the DAq computer is still communicating with the analyzers. The following instructions
will instruct you on how to accomplish this task:
NOTE
Performing this task will generate Maintenance Fault F108 – No polls from HMI
1. Manually release the Analyzer by sliding the Removal key into slot located in the bottom of
the Analyzer front (key located in Software Binder shipped with each Vertex™ VC4 rack) and slide the
Analyzer out of the cabinet.
2. Locate the Ethernet cable on the rear panel and disconnect it.
3. Open the side of the Analyzer by unscrewing the 4 thumbscrews at the top of the left side.
TM
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