Description Of The Circuit Board - GE Hydran 201 i Instruction Manual

Chapter 3 • Hydran 201Ci Controllers
3.1.3

Description of the Circuit Board

The circuit board of the H201Ci-C is presented in Figure 3-3 on page 3-5.
7. RS-232 Computer Port Connector, DB-9 Male (J10): This standard connector is used
to interface the H201Ci-C directly to a PC or to a smart modem. For wiring details,
see Table D-10 on page D-8. The USB computer port (J16) is also available (item 8
in Figure 3-3 on page 3-5).
8. USB Computer Port Connector, Type B (J16): This connector is available to interface
the H201Ci-C directly to a PC or to a smart modem. The RS-232 computer port (J10)
can also be used (item 7 in Figure 3-3 on page 3-5).
9. 5-Vdc and 12-Vdc Power Supply Connector, 4 Pins (J6): This power source can be
used for optional equipment. Each line is protected with a 1.35-A fuse.
10. Optional Modem Connector, 4 Pins (J9): This connector is used to interface the
H201Ci-C with a modem. The telephone line should be connected here. For more
detail, refer to the modem procedure located in the English/Procedures folder of the
Hydran 201i System installation CD.
11. RS-485 LAN Connector, 3 Pins (J11): To set up a H201Ti network, the H201Ci-C's
(and/or H201Ci-1's) are daisy-chained together into an RS-485 Local Area Network
(LAN).
12. Supervisory Link Connector to Termination Board No. 1, 4 Pins (J15): An isolated
supervisory link cable coming from a H201Ti (through the termination board) is
connected here. The link cable carries serial data (communications) and isolated link
supply (+15 Vdc, from the H201Ci-C).
Note: The TDM pulse signal from the H201Ti (which uses a third pair when the supervisory
link is connected to a H201Ci-1) is not used by the H201Ci-C. The TDM pulse signal only
carries analog data and relay status, and it is not required for communications and
networking functions.
13. Heater Indicator, Yellow (DS8): This LED indicator is lit when the enclosure heater
is On. The enclosure temperature is controlled and the heater periodically turns on
and off to maintain the temperature near 25 °C (77 °F).
3-4 Rev. 6, March 2011 Part 17997