Status and Error Messages
6-3
Status and Error Messages
While in Diagnostic Mode, the top line of the LCD display shows
the prevailing status of the elevator. The message is scrolled.
There is a status message for each special operation (e.g., FIRE
SERVICE PHASE 1 - MAIN). There are also messages for most error conditions (e.g., SAFETY
CIRCUIT IS OPEN). Table 6.1 provides a complete list of these status and error messages
including a description and troubleshooting suggestions.
The following table contains some terms that are unique to MCE or to electronics manufactur-
ing:
• 2 or 2xx Bus: These are 120VAC buses originating in the controller.
• IDC: Insulation Displacement Connectors. These are connectors that allow an insulated
wire to be pressed into place where narrow “jaws” cut the insulation to provide positive
connection. When an instruction says to “check IDC,” it means to check signal presence at
that connector/number, the integrity of the wire, the source connection, and the source
signal.
• NYCHA: New York City Housing Authority.
• Data Trap: An electronic “capture” of the present status, off or on (0 or 1) of eight signals.
Used when troubleshooting to see that signals are in the expected state during a particular
point of controller operation.
• Jumper: A board-mounted connector with exposed, vertical pins that can be shorted
together using a small “jumper” designed to slide on to two pins.
• PMT: Panel Mount Terminal. Gray screw-terminals arranged on a length of DIN rail.
PMTs provide a convenient point of connection for field wiring.
CAR IN TEST MODE
PI 8 2O:1O11OO11
Header connector
on circuit board
Jumper
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