Ametek IPS-4-UV, User Manual

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4-6 | IPS-4-UV Analyzer-GPDiv2
• Active alarm names will flash on the HOME screen only. To stop the
flashing, press any key once. The alarm will begin flashing again after
20 seconds of no keypad activity, unless the alarm is reset.
• To return to the HOME screen from any other screen (except when in
Edit mode), press the
HOME
soft key.
Summary of Analyzer Operation
The analyzer’s EEPROM contains a number of files that define its configu-
ration for the intended application. The configuration variables are con-
tained in a file named “params.xml.” This file consists of approximately
500 parameters and their default settings. A CD with the Parameter List
(Factory Settings) file is shipped with each analyzer.
This list includes variables to set up Communications, Units of Measures,
Language, Timers for analyzer operations, Inputs, Outputs, Relays and
Solenoids, Alarm Limits, Lamp Control, Heater Setpoints and Control,
Filtering, and various other parameters. It is also continuously updated
by the main processor with (read-only) variables such as Relay/Solenoid/
Valve Status, Current Outputs, and other parameters.
A subset of these parameters may be changed from the User Interface
Panel. The sequence of analyzer operations is defined by a file called
“statemachine.xml.” The processor continuously communicates with the
“statemachine.xml” and “params.xml” files to define what function the
analyzer should be performing at any given time. These files also control
the setting of valves and other devices.
Examples of “states” include Zero, Span, and Measure. These and other
states are described in detail under “System Status Messages (HOME
Screen),” later in this chapter.
Generally, the analyzer will sequence through a series of factory-set, pre-
defined states. However, through settings that can be changed from the
User Interface Panel, you can vary the interval between analyzer states,
manually change the analyzer to another state, or enable or disable certain
states.
The analyzer will leave its normal sequence of states if there is an alarm
condition, such as a temperature or pressure out of range, and will return
to the first state in the sequence once the offending condition has been
cleared (reset).