TranSystems Corporation - LGM Construction

501070099 Federal Express Oakland Sort Expansion Issued for Bid 10/11
6. Data shall be shared between networked System Controllers.
7. The System Controller shall utilize industry recognized open standard protocols for
communication to unit controllers.
8. The System Controller shall continually check the status of its processor and memory
circuits. If an abnormal operation is detected, the controller shall:
a) Assume a predetermined failure mode.
b) Generate an alarm notification.
c) Create a retrievable file of the state of all applicable memory locations at the time of the
failure.
d) Automatically reset the System Controller to return to a normal operating mode.
B. Communications. Each System Controller shall reside on the Enterprise wide network, which is
same high-speed network as the workstations. The Enterprise wide network will be provided by
the owner and supports the Internet Protocol (IP). Local connections of the System Controller shall
be on ISO 8802-3 (Ethernet). Each System Controller shall also perform routing to a network of
Custom Application and Application Specific Controllers) [Optional – Each System Controller shall
perform communications to a network of Custom Application and Application Specific Controllers
using LonTalk FTT-10 and LonMark profiles and/or use BACnet MSTP as prescribed by the
BACnet standard to perform communications to a network of Custom Application and Application
Specific Controllers.
C. Serviceability. Provide diagnostic LEDs for power, communications, and processor. The System
Controller shall have a display on the main board that indicates the current operating mode of the
controller. All wiring connections shall be made to field removable, modular terminal connectors.
The System controller shall utilize standard DIN mounting methods for installation and
replacement.
D. Memory. The System Controller shall maintain all BIOS and programming information indefinitely
without power to the System controller
2.6 APPLICATION SPECIFIC CONTROLLERS
A. General. Application specific controllers (ASC) are microprocessor-based DDC controllers, which
through hardware or firmware design are dedicated to control a specific piece of equipment. They
are not fully user programmable, but are customized for operation within the confines of the
equipment they are designed to serve.
1. Each ASC shall be capable of stand-alone operation and shall continue to provide control
functions without being connected to the network.
2. Each ASC will contain sufficient I/O capacity to control the target system.
B. Serviceability. Provide diagnostic LEDs for power and communications. All wiring connections
shall be clearly labeled and made to be field removable.
C. Memory. The Application Specific Controller shall maintain all BIOS and programming information
in the event of a power loss for at least 90 days.
D. Transformer. Power supply for the ASC must be rated at minimum of 125% of ASC power
consumption, and shall be fused or current limiting type.
DIRECT DIGITAL CONTROL SYSTEM 15900-10