Flex 620 System Description - Revision 5, 11/22/01
4
Common
Control Module
The common control module (CCM) or section consists of four modules; the common
control display, the bus driver module, a relay expansion module, and the main CPU
module.
Common
Control
Display
The Common Control Display (CCD) is divided into two sections, the left and right
displays. It provides the user with visual indicators (LED's) for status indication and
guided prompts. The sixteen tactile switches are used to operate the system as well as
enter data during system programming. All alarm, fault, supervisory and security
status changes are annunciated by means of LED indication and the user is prompted
with the proper sequence of operation. The "Power On" LED indicator is green,
alarms or activated signal and city tie circuits are indicated by red LED's and faults are
indicated by yellow LED's.
CPU Module
The CPU module (or micro processor module) contains the system operating firmware
and non-volatile memory. It provides all the processing functions and system memory
as well as providing the local/remote communications interface.
Relay
Expansion
Module
The Relay Expansion Module (REM) provides 4 common relay circuits. When
connected to the bus driver module this module provides
Common
Alarm, Common
Trouble
and
Supervisory
Form C relay contacts. Each relay has a fused common rated
at ten (10) amps. The expansion module mounts (via standoffs) to the right side of the
bus driver module.
Bus Driver
Module
The Bus Driver Module (BDM) contains the circuitry that interfaces with the CPU
module and the system modules. The bus driver module is equipped with two Style Y
or Z, limited energy signaling circuits, a ground fault detection circuit and a city tie
circuit. It has three power limited outputs, 24 Vdc auxiliary power, 12 Vdc, and
resetable 24 Vdc smoke detector power. Circuitry to monitor the status of the CPU
and set the system in a default mode of operation is also incorporated in the bus driver
module.
___________________________________________________________________________________________
620 Common Control Module
Bus Driver
Module
Common Control
Display
Relay Expansion
Module
CPU Module
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Summary of Contents for FLEXALARM 620
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