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PRT-PX16-PCB
Protege 16 PGM Output Expander
Installation Manual | June 2017
2.10
RS-485 Biasing Settings
The Protege 16 PGM Expander has biasing settings for the network communication port. Biasing can be
configured for either high or low (L indicates a low bias and H indicates high bias configuration). Both jumpers
MUST be set to the same bias type.
In most cases the Biasing will be on either the controller or the reader expander when in elevator mode. In
normal operation the biasing must be set to no biasing (Jumper removed or in the middle).
i
Biasing should only be set to LOW on ONE point on any single segment of the RS-485 network. All
other devices on the same segment should be set to the middle position which is no biasing.
By default, the PRT-CTRL System Controller has the jumpers for the biasing set to low and the EOL
jumper on. This is also the same default configuration for the slave communication port on the
PRT-RDI2 Protege Intelligent Reader Expander.
2.11
Fire Control Input
The fire control input is an optically isolated input that allows the output relays of the Protege PGM Expander to
be deactivated in the case of an emergency. This input must be activated by a voltage from 12-32VDC and it is
recommended that it is isolated from the access control system.
The Protege PGM Expander is designed for simple fire control connection and this allows all of the Fire Control
terminals to be connected in parallel reducing the need for external relays at each unit.
F+
+-
F-
To Next
PRT-PX16
Fire Control System
+
-
Fire Control Input Connection
i
The relays of the Protege PGM Expander WILL NOT activate unless there is a voltage supplied to
these terminals. To check if the relay voltage is activated ensure the RELAY OK LED indicator is
illuminated. The LED is located on the right side of the PGM Expander circuit board.
i
Fire Control can be overridden using the Fire Control override configuration jumper. By default this
jumper is shipped in the disabled position requiring the installer to enable the override option or power
the F+ and F- fire control inputs.
