GE Hydran 201 i Instruction Manual page 70

Chapter 3 • Hydran 201Ci Controllers
19. Analog Outputs (J22): This connector is factory-wired to the terminal block between
pins 17 and 20.
20. Alarm Contacts Connector, 9 Pins (J18): The Gas High, Gas High-High and System
OK alarm relays are factory-wired from this connector to the terminal block between
pins 7 and 15. A three-wire type-C (Normally Open + Normally Closed + Common)
set of contacts is available for each alarm.
Note: The System OK alarm relay is normally energized. When a system fault occurs, it
de-energizes the relay. Thus, the Normally Open (NO) contact actually opens on system
failure or power loss. See Chapter 10 for a description of the Hydran alarms.
21. ac Supply Fuses (F11): There is one fuse holder for standard 5 x 20 mm fuses (the
rating can be found in Section 13.5 on page 13-7).
22. ac Supply Connector, 3 Pins (J2): The ac line is factory-wired from the ac terminal
block to this connector.
23. Heater Connector, 6 Pins (J3): The enclosure heater is factory-wired to the connector
J3. It consists of two 50-W resistors located under the support bracket of the
electronic circuit board.
24. Voltage Selector Switch (SW1): For wiring details, see Table D-12 on page D-11.
This selector is used to choose between the following:
• 115 V, corresponding to a 90–132 Vac range from 47 to 63 Hz
• 230 V, corresponding to a 180–264 Vac range from 47 to 63 Hz
25. Configuration Communication Status Indicator, Yellow (DS7): This LED, only used
for programmation purposes at the factory, indicates there is a configuration of the
unit through one of the serial ports. It flickers as data bits pass through the H201Ci-1,
whatever the direction and the port (RS-232, RS-485 LAN, USB or optional modem).
26. Communication Status Indicator, Yellow (DS6): This LED indicates that serial
communication activity is present. It flickers as data bits pass through the H201Ci-1,
whatever the direction and the port (RS-232, RS-485 LAN, USB or supervisory link).
3-14 Rev. 6, March 2011 Part 17997