Micromod MOD: 30ML and Modcell Maintenance for 2001N, 2002N, and 1800R - Manual (Page 80)

MOD30ML and Modcell Maintenance Manual
DIAGNOSING SHUTDOWN FAULTS
SECTION 6
DIAGNOSING SHUTDOWN FAULTS
6.1 SHUTDOWN INFORMATION
When a MODCELL or MOD 30 ML instrument shuts down for any reason, status information
is saved in the instrument database. If a memory module is installed, and its switch is in the
READ/WRITE position, a copy of the status information is also saved in the module.
MicroMod Automation support personnel can interpret this saved information to determine
the cause of the shutdown.
If an instrument with a memory module shuts down (watchdogs for example) and cannot run
again, it may still be possible to read the shutdown information in the memory module using
the procedure in Section 6.2.3.
When a shutdown fault occurs, the instrument reacts as follows:
• MODCELL
The red status LED turns on, the green LED turns off, and shutdown information is stored
in the instrument memory. Also, the instrument stops communicating and all outputs go
to their configured failsafe values.
• MOD 30ML
The beeper sounds, the red alarm indicator flashes, the word FAILURE appears on the
display, the control keys become inoperative, and shutdown information is stored in the
instrument memory. Also, the instrument stops communicating and all outputs go to their
configured failsafe values.
Use the method described in one of the following sections to obtain a record of the shutdown
fault information, and transmit the data to MicroMod Automation support personnel for
analysis.
6.2
RECORDING SHUTDOWN INFORMATION
Select a method of recording the shutdown information as follows:
• For Modcell instruments, use the Application Builder Method, Section 6.2.1.
• For a MOD 30ML instrument, which can be connected to a PC running the Application
Builder software, use the Application Builder Method, Section 6.2.1.
• For a MOD 30ML instrument without the Application Builder, use the MOD 30ML Display
Method, Section 6.2.2.
• The Memory Module Method, Section 6.2.3, is used only as an alternate approach when
specified in one of the other methods.
6 -1