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INSTALLATION MANUAL
CAA480A
Elevator Controller
WIRING THE DRM AND CAA480A
The CAA480A and DRM can only be wired using the Fail-Safe connection method
(refer to page 8). Wire the DRM and CAA480A as shown in Figure 20.
To connect the DRM and CAA480A:
1. Connect the "COM" terminal of the selected floor control relay of the CAA480A
to the desired floor button in the elevator car.
2. Connect the "NC" terminal of the selected floor control relay of the CAA480A
to the button input of the elevator control system.
3. Connect the "COM" terminal of the DRM to the "-" or ground of the elevator.
4. Connect the selected "IN" (Floor Selection Input) of the DRM to the wire connecting
the CAA480A's "COM" terminal and the floor button in the elevator car.
Figure 20: Connecting the CAA480A and DRM
Elevator Control System
Floor Button's Positive Voltage*
Floor Button's input terminal
Loop terminal added
Elevator Car
Floor Button
Elevator (-) or
Floor Button's GND
!
!
Disconnect AC and battery power before mounting the DRM to the CAA480A.
!
!
*The elevator control system may provide a positive or negative button control voltage. The
appropriate floor selection input will need to be wired to reflect this. The above diagram shows it
wired for a positive button control input.
by Installer
To "COM" input
terminal of desired
Floor Control Relay
To "NC" input
terminal of desired
Floor Control Relay
CAA480A Elevator Controller
(partial view)
E-BUS
A+
IN1
CM1
IN2
16-Floor DRM
CM2
(CAA482P)
IN3
CM3
mounted on a
IN4
CAA480A
CM4
COM2
IN5
CM5
IN6
CM6
IN7
CM7
IN8
CM8
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