GE Hydran 201i, Инструкция по эксплуатации

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Chapter 3 • Hydran 201C
i
Controllers
3-2 Rev. 6, March 2011 Part 17997
32 H201C i -C’s (and/or Hydran 201C i -1’s) can be networked via an RS-485 Local Area
Network (LAN).
The H201C i -C features:
• A digital circuit board to control all communications, including networking.
• A terminal block to connect the ac power supply.
• A terminal block to connect the H201C
i -C and the H201T i ’s with a supervisory link.
• Connectors for the communication cables:
– RS-232 or USB link toward a host computer or a modem.
– RS-485 link toward other H201C
i Controllers to establish a network.
• Network and communication management. The H201C i -C (or any other Hydran 201C i
Controller in a local network) is connected to the host computer with an RS-232 or USB
link or a modem (optional) and to each H201T
i with a supervisory link. A maximum of
32 H201C i Controllers (H201C i -C and/or H201C i -1) can be connected together with an
RS-485 link to establish a local network that can contain up to 128 H201T i ’s. For details
on network configurations, see Chapter 9.
3.1.2 Description of the Major Components
An internal view of the Hydran 201C i -C is presented in Figure 3-2 on page 3-3.
1. Enclosure : The H201C i -C cabinet is rated Type NEMA 4X. With the standard
internal heater, the instrument operating temperature ranges from -40 to +55 °C (-40
to +131 °F).
2. DB-9 Male RS-232 Connector : This standard DB-9 male serial communications
connector, housed in a small connection box, allows easy connection of an external
PC.
3. USB Computer Port Connector, Type B : This standard USB (type-B) female serial
communications connector allows to easily connect a PC.
4. Electronic Circuit Board : The circuit board incorporates all the electronic functions
of the H201C i -C: Isolated supervisory link supply, communication ports and modem
(optional) management, enclosure heater control, and ac supply voltage selector.