Johnson Controls CK721-A User Manual

CK721-A User Interface CK721-A Installation and Operation
4-42 24-10349-8 Rev. B
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© 2012 Johnson Controls, Inc.
system. For floor tracking, one input point needs to be assigned to every floor button
in the cab that is supposed to create a floor tracking message.
There’s no prescribed scheme to associate outputs an
d inputs by their address to the
elevator’s floor buttons, but the reader and all outputs and inputs for an elevator
must be defined on the same panel. The association of elevators, floors, readers,
outputs and inputs is done by defining an Elevator in the P2000 software, and then
downloading it into the panel.
When presenting a badge at the elevator cab’s reader, the panel searches the badge
re
cord for floor access information. This information is then applied to energize the
output relays of those floors that the person should have access to. It is the elevator
control system’s responsibility to ensure the elevator does not go to disabled floors.
The enabled floors will be disabled after the elevator access time has expired, unless
they are still enabled by public access or by direct output control. All buttons that are
exclusively enabled by the elevator access grant will produce floor tracking
messages.
D620-ECG Low Level Interface
The Floor Control Inputs (Elevator I/O-8 inputs) are provided with compatible
signals from the Elevator Car Controller whenever a button is pushed on a cab.
These inputs are “contact closure” or “contact open” and use the Transition Mode.
The Floor Grant Outputs (Elevator I/O-8 outputs)
command the Elevator Car to
travel to the selected floors. These outputs are momentarily activated (energized) for
a grant, simulating an actual finger pushing on a button. Floor Grant Outputs are
unavailable for time tasking either by point or group or from Control by Operator, or
Event other than for Pulse (no Set, Reset, or Timed On).
Public Access is accomplished by linking flo
or inputs to floor outputs. This means
that if a particular floor becomes “Public,” whenever its input is triggered, its output
should be momentarily activated (pulsed).
Operation of the Elevator Cab
Upon arrival at a COP (car call button panel in an elevator):
 When a badge holder presses a button assigned to a floor that is in Public
Access, the associated Floor Call Output is immediately pulsed. Public
Access requests, once granted, are immediately discarded, and not recorded.
Public Access requests are never placed in the Floor Call Request queue.
 When a badge holder presses a button assigned to a non-Public Floor, a Floor
Call Request is queued. Floor Call Requests is queued for processing for 5
seconds. If another Floor Call Request arrives before badging occurs, it
should replace the previously queued request. If a badge is not presented
within a 5-second period, any queued floor call request will be discarded.
Upon badging:
 If the floor call request is within the privileges associated with the badge, a
momentary grant is issued by pulsing (activating/deactivating) the associated

Johnson Controls CK721-A Specifications

General

Brand	Johnson Controls
Model	CK721-A
Category	Controller
Language	English