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SHUNT OPERATION
The Shunt Output is designed to kill the main power to the controller in case of
a fire in the Machine Room. The output on the SRI board allows the controller
to activate an external “Shunt Disconnect” device after the car has moved to the
recall floor and opened its doors.
1. Smoke Sensor activates.
2. Car(s) move to programmed recall floor and open the doors.
3. Shunt Output activates and opens the Shut bypass switch, killing power
to the main disconnect.
NOTE: Battery Lowering Instructions: The ML1/ML2 line (Sheet 3) MUST be ran
through the shunt disconnect so that the BLD won’t power up when the Shunt
disconnect trips. Failure to do this will cause high voltage to be present even
after the main power is cut.
3 Smoke – Group Shunt Setup
The Shunt Output for a duplex setup is two-fold: both the car and group SRU
need to have parameters set to activate the Shunt Operation.
The Shunt input is on the group SRU board via Smoke 3 (IO 531) and the output
for the disconnect is on the individual car’s SRU board, since activation is
dependent on when the car has moved to the recall floor and opened its doors.
1. Group Binary Parameter (MAIN MENU | DEBUG | BINARY PARAMETERS)
a. 00-018.0 = “YES”
b. This changes the smokes to the following:
i. Smoke 1 sends car to Main Floor
ii. Smoke 2 sends car to Alternate Floor
iii. Smoke 3 activates input for Shunt Trip operation
iv. Smoke 4 flashes the In-Car Fire Lamp
2. Car Binary Parameter (MAIN MENU | DEBUG | BINARY PARAMETERS)
a. 13-172.5 = “YES”
3 Smoke – Simplex Shunt Setup
1. Car Binary Parameter (MAIN MENU | DEBUG | BINARY PARAMETERS)
a. 13-172.5 = “YES”
b. When this parameter is set it changes the function of the smoke
inputs to the following:
i. Smoke 1 sends car to Main Floor
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