INSTALLATION MANUAL
CAA480A
Elevator Controller
Remove the connection between
the Elevator Car Floor button
and the Elevator Control system's Floor
Button input terminal.
Elevator Car
Floor Button
Connect the Elevator Car
Floor Button to the added loop
terminal
FAIL-SECURE
Connecting the CAA480A using the fail-secure method offers more security in the case
of a power or communication failure. If either were to occur, then the elevator car's fl oor
buttons would become inoperative. Refer to Figure 6. Connecting the CAA480A
in the fail-secure method:
1. Connect the "COM" terminal of the desired fl oor control relay from the CAA480A
to the desired elevator control system fl oor button input terminal.
2. Remove the connection between the elevator car fl oor button and its corresponding
elevator control system fl oor button input.
3. Using a loop terminal added by the installer, connect the "NO" terminal of the desired
fl oor control relay from the CAA480A to the added loop terminal. Then connect
the elevator car fl oor button to the added loop terminal.
Figure 6: Standard Button Control (Fail Secure):
Elevator Car
Floor Buttons
Elevator Car
Card Reader 1
Elevator
Control System
Floor Button's "common" terminal
Floor Button's input terminal
Loop terminal added
by installer
Elevator Car
Floor Button
connection wires
Floor Button
terminals
Elevator
Control
System
Floor Button
In order for the fail safe method to function correctly,
the PWR OFF/ON DIP switch must be in the ON position.
CA-A480-A Elevator Controller
COM1
NO1
NC1
COM2
NO2
To
CA-A480-A
Elevator
Controller
To
relays
ADRESS 1
ADRESS 2
ADRESS 4
ADRESS 8
RLY COMMS
RLY OFF/ON
DRM ENABLED
PWR OFF/ON
E-BUS
To next
CT-V900-A
CA-A480-A
Controller
Elevator
Controller
Card Reader 2
for second
Elevator Car
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cdvigroup.com
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