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PRT-PX16-PCB
Protege 16 PGM Output Expander
Installation Manual | June 2017
5.3
Fail Safe Destination Reporting Wiring
Destination reporting will allow the monitoring of floor selection by the user. The difference between standard fail
safe operation and destination reporting operation is that the relay is only deactivated (Invert Floor Control
Relays Option Enabled in the Reader Expander Configuration) when a user selects a floor preventing more than
one floor from being selected. The selected floor is also reported back to the control unit and logged as an
event allowing a full audit of users floor selections to be recorded.
Inputs on the DRM
daughter board
Button voltage
common in elevator
control system
See text
Loop terminal added by
elevator company located in
elevator control system
Relay Contacts on
the main Elevator
Control Board
NC
NO
COM
RELA
Y 1
Normal Connection
Removed
Floor Input
Terminals in Elevator
Control System
Floor Selection Button
in Elevator Car
+ IN1 - + IN2 -
Destination Reporting Fail Safe Wiring
As shown in the above diagram, the wiring is similar to standard fail safe wiring with the exception that an
additional wire is required from the contacts of the relay to the input terminal on the PRT-PX16-DRI Destination
Reporting Interface. A button voltage common wire is also required from the elevator control system. The button
common voltage wire is typically looped to all the inputs. The diagram above shows a connection using a
negative common. It is possible that the common may be positive and not negative.
i
It is important and is indicated by the "SEE TEXT" caption in the diagram that the active input to the
PRT-PX16-DRI Destination Reporting Interface is linked from the side of the relay that is NOT
switched.
All forms of Destination reporting require the addition of one PRT-PX16-DRI Destination Reporting Interface per
Elevator Controller.
