1900/65A-00-04-01-00-00 AC power supply

The provided text explains how to connect a Rack Interface I/O Module to a host computer in the context of the 3500 Monitoring System. Here’s a summary of the key points:

Rack Interface I/O Module Types:

1. RS-232/RS-422 HOST Connector:
   • Connects to the host computer using RS-232, RS-422 (with a converter), or external Modem.
   • Used to connect to the previous rack in the daisy chain using RS-422 ONLY.
   • Switch on the module selects whether the HOST connector uses RS-232 or RS-422 protocol.
2. Internal Modem Connector:
   • Connects to the host computer using an RJ11 compatible modular plug to link into the phone system.

Connection Methods:

1. Connecting via RS-232:
   • Communication rate limited by the baud rate selected between the 3500 host computer and the first Rack Interface Module.
   • Switch on the Rack Interface I/O Module connected to the host computer must be in the RS-232 position.
2. Connecting via RS-422:
   • Communication rate limited by the baud rate selected between the 3500 host computer and the first Rack Interface Module.
   • Switch on the Rack Interface I/O Module connected to the host computer must be in the RS-422 position.
   • Use cable 130120-XXXX-XX (PVC Insulation) or cable 131106-XXXX-XX (Teflon Insulation).
3. Daisy Chaining Rack Interface I/O Modules:
   • Use the HOST port to connect to the host computer or the rack closer to the host computer.
   • Use the RACK RS-422 port to connect to the rack farther from the host computer.
   • Use specific cables for connections between racks based on length requirements:
     • For lengths ≤150 meters (500 ft): cable 130122-XXXX-XX (PVC) or 131107-XXXX-XX (Teflon).
     • For lengths >150 meters (500 ft): use one of the mentioned cables along with RS-422 extension cables (e.g., 130121-XX-XX) to create longer cables.

Additional Components:

• RS-232/RS-422 Converter:
  • For 110 Vac, use part number 02230411.
  • For 220 Vac, use part number 02230412.
  • Cable 130119-01 available in a 3-meter (10 ft) length.

Daisy Chaining Considerations:

• Use HOST port for connections closer to the host computer.
• Use RACK RS-422 port for connections to racks farther from the host computer.
• Choose specific cables based on length requirements.
• For daisy chaining, use the appropriate cables for interconnecting racks in the chain.

This information provides guidance on the types of connections, cables, and converters required for linking Rack Interface I/O Modules to a host computer and daisy-chaining multiple racks in the 3500 Monitoring System. For detailed installation instructions, users should refer to the relevant manuals and documentation.