The Mpu - O. Thompson Microflite Ultra 2000 Installation & Adjustment Manual

INS UP/DN Sw.
NON/RESET Sw.
CAUTION: The NON/RESET switch should always be placed in the RESET position when you leave
the machine room. If this switch is left in the NON position and a drive faults occurs, passenger
entrapments may occur.
MG Sw.
EMERGENCY
DOOR OPEN Sw.

13.1.2 The MPU

The car controller's MPU, or Main Processor Unit, is responsible for all automatic operations, and
inspection door operation. The MPU receives standard inputs from the relay board through the left
hand ribbon cable that connects the relay board to the MPU board. For example, standard inputs to
the system are: safety circuit, door gate, door zone, brake switch, etc. Additional inputs specific to the
job can be wired to the spare inputs provided on the relay board, or to an optional I/O expansion
board that plugs into the left hand side of the MPU board. All MPU inputs are socketed, opto-
isolators. In the event of a failure, they can be easily removed and replaced.
Standard system outputs from the MPU are also optically isolated. The are sent out to the relay board
through the right hand ribbon cable, and pick up a relay on the board to perform the desired function.
Additional outputs specific to the job can be wired to spare relays provided on the relay board, or to
an optional I/O expansion board that plugs into the left hand side of the MPU board.
Network Channels
The MPU board has three LON network channels located at the top of the board. A plug in LON
board is added for each network channel, as needed.
The first network channel is used for the high priority car network. The Intelligent Car Station board
and The Car Top Encoder communicate with the MPU through this channel. This network has the
highest level priority in the car software.
The second network channel is the dedicated dispatching network. This is the network that ties the
cars to each other, and then to the dispatcher. This network has the second highest level of priority.
A third LON channel is provided for future use.
Revision: AA 2.2
Microflite Ultra 2000
The inspection UP/DN switch allows the car to be moved at inspection
speed from the controller. This switch is overridden by In Car and Top
of Car Inspection.
This switch should normally be in UP, or RESET position to allow the
car microprocessor to reset t h e motor drive system in the event of a
fault. This switch can be moved to the NON position for troubleshooting
purposes to capture drive faults.
This switch is used on generator applications to shut down the motor
generator set when desired.
Emergency door open switch. It may be necessary in an
emergency situation to open the car doors to remove entrapped
passengers. In this case, the car can be moved to a floor on inspection,
and this switch can be thrown to send a signal down to the Car Station
board to open the doors. The microprocessor will only open the doors if
the car is on inspection and the car is in the door zone.
Printed 03 - 15 - 03 13 - 3