8. USB Computer Port Connector, Type B (J16): This connector is available to
interface the H201Ci-1 directly to a PC or to a smart modem. The RS-232
computer port (J10) can also be used (item 7 in Figure 4-7.
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 1.35A fuse.
10. Optional Modem Connector, 4 Pins (J9): This connector is used to interface the
H201Ci-1 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 an H201Ti network, the H201Ci-1s
(and/or H201Ci-Cs) are daisy-chained together into an RS-485 Local Area
Network (LAN).
12. Supervisory Link Connector, 6 Pins (J15): The isolated supervisory link cable
coming from the H201Ti is connected here. The link cable carries the TDM pulse
signal (analog data and relay status), serial data (communications) and isolated
loop supply (+15 Vdc, from the H201Ci-1).
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).
14. Alarm 2 (Gas High-High) Indicator, Yellow (DS9): This LED indicator is lit when a
Gas High-High alarm condition (level, hourly trend or daily trend) is detected by
the H201Ti. It turns off when the condition is cleared. The H201Ci-1’s Gas High-
High relay tracks the equivalent relay in the H201Ti.
15. Alarm 1 (Gas High) Indicator, Yellow (DS10): This LED indicator is lit when a Gas
High alarm condition (level, hourly trend or daily trend) is detected by the H201Ti.
It turns off when the condition is cleared. The H201Ci-1’s Gas High relay tracks
the equivalent relay in the H201Ti.
16. System OK Indicator, Yellow (DS11): This LED indicator is lit when there is no
system fault. It turns off when a system fault is detected by the H201Ti, or when
the link is broken between the H201Ti and the H201Ci-1, or if there is an ac. power
loss in the H201Ti or the H201Ci-1. The H201Ci-1’s System Fail relay is de-
energized when the System OK indicator is off.
17. Supervisory Link Supply Indicator, Green (DS12): This LED indicator is lit when the
supervisory link power supply is On.
18. Analog Out Failure Indicator, Red-Orange (DS13): This LED indicator is lit when the
analog output is not working properly, is unplugged or is not used.
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