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Reference Manual
IP2030/RM, Rev AA
Section 5: Servicing and Health Checking
June 2014
Section 5: Servicing and Health Checks110
5.3 Health checking the MCU900 Series control unit
This section is a guide to the health check system, which includes tests, calibrations,
live readings, and diagnostic data for the MCU900 Series control unit.
5.3.1 Simulation (self-test)
Menu:
SETUP / [CONTROLLER /] APPLICATION / SIMULATION
The Simulation (or Self-Test) function is selected by pressing the red (ENTER) button at the
SIMULATION screen.
To start, press the UP-ARROW button once.
When started, the control unit Primary/Process Value (PV) is driven up to a maximum value
(P401) and then driven down to a minimum value (P400), continuously, therefore exercising
the Current Output and relays. It always begins at the 4 mA point.
A single cycle takes approximately 100 seconds to complete.
To pause at any time, press the UP-ARROW button. When paused, pressing the UP-ARROW
button once will resume the cycle. You can also press the DOWN-ARROW to pause, and press it
again to change direction of the cycle.
To quit at any time, even when paused, press the Esc button once to exit immediately to the
Full PV Display. The PV value calculation then immediately resumes being based on the
transmitter inputs.
5.3.2 Display test
Menu:
SETUP / [CONTROLLER /] SYSTEM / TEST / DISPLAY
The Display Test function is started by pressing the red (ENTER) button at the DISPLAY screen.
When the test is started, a pre-defined pattern sequence exercises all the LCD pixels. After
several seconds, the test ends by displaying the model code and software version number.
To re-run the Display Test, press the red (ENTER) button again. Otherwise, press the Esc button
to exit to the menu.