American Audio VELOCITY - REV 4-05 Betriebsanleitung PDF herunterladen (Seite 173)

METRO RAIL DESIGN CRITERIA SECTION 9 / SYSTEMS

Appendix A

DE304.09 Appendix 9A-12

Metro Baseline Re-Baseline: 04/20/10

4. Communications equipment operating temperature 0-40 degrees Celsius.

5. Humidity 5-95% non-condensing

6. Noise immunity NEMA Standard ICS 2-230

7. Dielectric withstand 1500VDC (UL 508, CSA C22.2 No. 142)

8. Flammability and Electrical ignition UL94V-0

9. Removable barrier-type terminal blocks or connectors to allow module

replacement without the need to disturb wiring

10. Self-locking tabs to permit installation and removal of chassis modules

without the need for tools

11. Indexed plugs and connectors to prevent incorrect insertion

12. Continuous overload protection of 200V between any interface terminal and

ground.

E RTU CPU

1. CPU memory shall be of adequate capacity to execute the Contractor

provided firmware with at least 25% of the memory unused.

2. Typical scan time 0.9 ms/K

3. Supports online programming and editing

4. The CPU shall include one Ethernet port with a protocol supported by

available OLE For Process Control (OPC) vendors.

5. The CPU shall include one master/slave serial port.

6. Local key switch mode selector for run, program, and remote modes.

7. System protection options shall be included for: program files, data tables,

input/output forces, CPU run mode (requires insertion of a key).

F SCADA Communications

1. The RTU shall support Ethernet communications using a protocol

compatible with the existing Metro SCADA system.

2. The SCADA communications shall be subject to approval.

3. The communications shall support efficient transfer of indication and control

information.

4. It shall be possible (and be supported by OPC vendors) to pack discrete

indications and controls into word based arrays and subsequently index

specific bits out of each register word.

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American Audio VELOCITY - REV 4-05 Betriebsanleitung Seite 173