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W
IRING
All wiring connections are made to the rear of the unit using barrier style
terminal blocks. All Field Contact Inputs, Relay Outputs and Power Connections
are made to Terminal Blocks that have a #6 screw, which will accept a solid or
stranded wire from 12-22 AWG, with or without ring & spade lugs. The
Pushbutton Controls and Flash Synchronization connections are made to
Terminal Blocks that have a #6 screw which will accept a solid or stranded wire
from 14-22 AWG, with or without ring & spade lugs.
Ensure that a proper earth ground connection is made to the protective earth
ground stud.
Note for Relay Output Wiring: When option RR (Repeat relay) is
installed, and 120 Vac is switched by the contact. All output wiring in any
individual cell must be wired to the same phase of the service.
Input Wiring
The input wiring is determined by the number of alarms (or windows per cell)
and the number of I/O Cards. The available configurations are:
The I/O cards can support up to two inputs, however, certain options limit that to
one input per card as shown with the Half Size Window above.
Common Field Contact Voltage
The I/O cards are typically set up for a common system-wide Field Contact
Voltage (FCV). In this case, terminals 2 and 4 of each I/O Terminal Block are
connected to the FCV, which is internally bussed throughout the system to the
Power Supply Terminal Block, Terminal 3. As shown in the Power Supply
Drawings, an external Field Contact Voltage Supply can be connected to the
Power Supply Terminal Block for distribution throughout the system. In systems
where the FCV is generated within the Annunciator, it is already distributed
throughout the Annunciator. Each I/O card FCV connection is internally fused
preventing any overload from the field. Removing an I/O card will disconnect the
FCV at the terminal block for that card only.
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Series 90B ANNUNCIATOR INSTALLATION AND CONFIGURATION MANUAL
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