Installation manual

Windsor 500 Installation Manual - Issue C
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19
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User Interfaces
Windsor can have up to 8 user interfaces connected on the keypad bus (CON 9) and an
engineer keypad
8
connected directly to the main PCB (CON 17). User interfaces can be either
an LCD keypad, a Keypoint or an INOVA Cardpoint. All user interfaces are connected to
Windsor on a 4 wire bus.
User Interfaces
Cable Length
The maximum length of cable for a single keypad is shown in the table.
Maximum Keypad Cable Length (m)
Power Source Un-screened Cable Screened Cable
Control Panel 600 400
9
Local Aux. PSU 800 600
If auxiliary PSUs are used then all 0v connections must be connected to the control
panel 0 volt terminal.
It is not recommended to share a sensor connection and keypad bus in the same cable.
8
An engineer keypad is any keypad addressed as keypad 0. A keypad with address 0 could be
connected to on the UI bus rather than the engineer keypad connector. The configuration for Keypad
0 cannot be changed.
9
The maximum length of screened cable can be increased to 500m by using 2 cores for the positive
and ground supply to the keypad.