Keyscan Technical Guide (PC109x - 04.12)
160
Appendix G – Accessibility
HC Relay
The optional accessibility HC relay is designed to connect with an accessibility operator that mechanically
opens and closes a door. Presenting a card with the Accessibility designation at a valid door pulses a
designated accessibility HC output relay. The accessibility HC output relay pulses the accessibility operator and
the system monitors the door contact based on the Accessibility Door Held Open time set in the Client software.
To use the accessibility HC relay option on CA4500B and CA8500B control boards, an additional OCB-8 is
required.
Table 31 – OCB8 Power Specifications
Unit Power Notes
OCB-8 12 VDC, 230 mA
Accessibility HC Output Relays
Ensure that the accessibility HC output relay matches the door output as indicated below.
Table 32 – Accessibility HC Relay/ Door Assignment
Control Board/OCB-
8
Door # /HC Relay # Ribbon Cable Connection OCB-8 to Control
Board
CA250B/OCB-8 Door 1/HC Relay 5
Door 2/HC Relay 6
Relay 7 and 8 reserved for Pre-
alert.
Connect ribbon from OCB-8 to Control 1 on CA250B
CA4500B/OCB-8
(optional)
Door 1/HC Relay 1
Door 2/HC Relay 2
Door 3/HC Relay 3
Door 4/HC Relay 4
Relays 5 to 8 not used.
Connect ribbon on OCB-8 to Control 4 on CA4500B.
CA8500B/OCB-8
(optional)
Door 1/HC Relay 1
Door 2/HC Relay 2
Door 3/HC Relay 3
Door 4/HC Relay 4
Door 5/HC Relay 5
Door 6/HC Relay 6
Door 7/HC Relay 7
Door 8/HC Relay 8
Connect ribbon on OCB-8 to Control 4 on CA8500B.
To Next Page
Loading...
Need help?
General
