Specifications

SECURITY CAMERA SYSTEM UPGRADE AND REPLACEMENT
FOR MONTGOMERY COUNTY DETENTION CENTER
SECURITY CAMERA SYSTEM 17000-25
c. 2 projects running in Master Control are identical
2. Allen-Bradley PLC
a. PLC 5
b. Remote PLC racks on several floors
3. PC Work Stations and Servers
a. Each Wonderware project runs on a PC running Windows NT
b. Wonderware communicates with the PLC over Ethernet.
4. Current Security System/Network - Functions
a. The PLC’s collect inputs from the Intercom call pushbuttons, Door
limit switches, etc.
b. The Wonderware HMI projects monitor the PLC inputs and direct
the PLC to turn outputs (solenoids) on and off.
c. The Wonderware projects have custom display screens that the
Correction Officers use to direct the operation of doors, intercoms,
CCTV camera and monitors, etc.
d. A redundant Wonderware projects in the Main Control Room
constantly monitor the PLC’s so that if a local project fails there
is no interruption of the security network.
e. Both Main Control projects have the ability to take over any
Wonderware project at any time throughout the facility.
f. CCTV project is responsible for switching the existing cameras
through multiplexers. Wonderware utilizes serial communications
to activate the correct camera per the camera call-up location.
g. Scripting is utilized from each separate project to communicate to
CCTV project. The scripting information provides the data needed
by CCTV to switch the cameras.
5. Audio and Video
a. Intercom buttons, when pushed, create a call on the Wonderware
screen. Upon acknowledgement of Next Call CCTV sends serial
communications to camera multiplexers. A signal then turns on
cameras at correct intercom location. An audio signal can then be
established or denied.
H. New Security System Additions:
1. Hardware and software
a. There will be four (4) new Wonderware HMI projects created for
the control of the new CCTV system and the designated doors and