GE Hydran 201i, Instruction Manual

Page: 57 / 300

Part 17997 Rev. 6, March 2011 3-1
Chapter 3
Hydran 201C i Controllers
3.1 HYDRAN 201C I -C COMMUNICATIONS CONTROLLER
Figure 3-1 on page 3-1 shows one possible configuration of a Hydran 201 i System. It
consists of three components:
• A host computer
• The Hydran 201C
i -C Communications Controller, which is described in detail in
Section 3.1 on page 3-1
• The Hydran 201T i Intelligent Transmitter, already described in Chapter 2
3.1.1 Features
The Hydran 201C i -C is meant specifically to interface a network of up to
128 Hydran 201T i ’s to a computer via a single RS-232 or USB link, or an optional modem.
As opposed to the Hydran 201C i -1 (Section 3.2 on page 3-7), the H201C i -C does not have
a display, nor does it provide alarms or analog outputs.
Up to four H201T i ’s (typically, a transformer bank [A, B, C] and sometimes an auxiliary)
can be connected to each H201C i -C through the isolated supervisory link. A maximum of
Figure 3-1 - Typical Configuration of a Hydran 201 i System
H201C -C i H201 sensor
H201T i
Supervisory
link cable
RS-232
or USB
link
or
modem
Host computer
Hydran 201Ci-C
®
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