Troubleshooting
5-66 Manual # 42-02-2P24
MC-CPI Car Panel Interface Board
The MC-CPI board, mounted in the car operating panel, converts the discrete closures from the
panel buttons and switches to data on the CAN serial bus and passes it through the MC-LSI
Landing System Interface board on the cartop, up the traveler to the car controller. Additional
MC-CPI boards are used to accommodate rear doors or installations with many floors, COP but-
tons, and lamps.
Spare assignable inputs to and outputs from CPI boards are available depending upon system
configuration, front control panel only or front and rear control panels.
• F1 menu, Serial COP Board HC-CPI = YES and F1, HC-RDR Board on this Car = NO: CPI
board assignable inputs show up in the Spare Inputs menu as CPI F (front panel board)
I10 - I16; CPI FX (front panel extender board) I1 - I7. Spare outputs (Spare Outputs menu)
will be prefaced with an ‘O’ for Output.
• F1 menu, Serial COP Board HC-CPI = YES and F1, HC-RDR Board on this Car = YES: CPI
board assignable inputs show up in the Spare Inputs menu as CPI F (front panel board)
I10 - I16 and CPI-R (rear panel board) I10 - I16. Spare outputs (Spare Outputs menu) will
be prefaced with an ‘O’ for Output.
If the job has MC-CPI boards, unused spare inputs to and outputs from these boards must be
set to NOT USED. If controller software is upgraded in the field, it is very important to check
programmable CPI board inputs and outputs and verify unused connections are set to
NOTUSED. Please refer to “Spare Inputs Menu” on page 4-26.
Spare inputs and outputs used on the CPI boards must be 24VDC, not to exceed 6 Watts.
Installation Instructions
1. Turn the power off at the main disconnect.
2. Mount the MC-CPI board(s) inside the COP using the supplied hardware and providing
sufficient clearance for the components.
Do not replace C-RJ11-CAN-15 cables between the MC-CPI and MC-LSI with RJ11 cables purchased
locally. These cables MUST be replaced with C-RJ11-CAN-15 supplied by MCE. For a replacement
cable, please contact MCE technical support.
3. Refer to the prints for the job to wire the MC-CPI board. An example of a typical wiring
print is included in this instruction (Please refer to “Example: MC-CPI Wiring” on
page 5-69 and Please refer to “MC-CPI Serial Car Operating Panel Board” on page 5-67).
This system is designed for 24 VDC circuits only! Do not connect 120 VAC or DC to any
terminal on the MC-CPI board. Connect only the 24V power from connector J6 (24V
CUSTOMER LOAD SUPPLY) to the load. (Please refer to “MC-CPI Board Details” on
page 5-68 and Please refer to “Example: MC-CPI Wiring” on page 5-69).
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