Alarm Interface
Part 17997
Rev. 6, March 2011
10-7
10.2.3.3
Force OFF
In this mode, the relay does not respond to changes in alarm conditions; the relay’s power
always remains off. This mode is used mainly to test the alarm relays or disable an alarm
circuit.
10.2.3.4
Force ON
In this mode, the relay does not respond to changes in alarm conditions; the relay’s power
always remains on. This mode is used mainly to test the alarm relays or disable an alarm
circuit.
10.3
ALARM INTERFACE
The alarm interface between the Hydran 201
i
System and the user can take different forms.
When an alarm is triggered, the following actions are generated:
1.
An alarm message flashes on the Hydran 201T
i
’s display. For example:
Gas H;250 ppm
(the gas level exceeds the gas High alarm set point, which is
currently set to 250 ppm). For the complete list of alarm messages, see Section 12.1
on page 12-1; for details on the display of alarm messages, see Section 4.2.1 on
page 4-3.
2.
The status of the corresponding alarm relay changes. The classic interface method
consists in linking the relays’ alarm contacts of the Hydran 201C
i
Controller (or
H201T
i
) to an alarm panel (or any other SCADA system) located in such a way that
an alarm being triggered would immediately warn the operator. For details, see
Section 11.1.2 on page 11-2.
3.
An alarm signal is transmitted (through the supervisory link) to the H201C
i
and from
the latter to the host computer. The Hydran Host software (if running) displays an
alarm window. This way, the state of the alarms can be continuously monitored
(locally or remotely) or verified periodically.
4.
A call can be made to a host computer via modem (see the
CommMode
parameter in
the H201T
i
’s
Communication
submenu; Section 4.5.6.2 on page 4-22).
5.
The two illuminated push-buttons (alarm indicators) mounted on the door of the
Hydran 201C
i
-1 (the Hydran 201C
i
-C is not equipped with push-buttons) indicate the
Summary of Contents for Hydran 201i
Page 1: ...GE Energy Services Digital Energy Hydran Instruction Manual 201i System ...
Page 6: ...Instruction Manual vi Rev 6 March 2011 Part 17997 PAGE LEFT INTENTIONALLY BLANK ...
Page 8: ...Instruction Manual viii Rev 6 March 2011 Part 17997 PAGE LEFT INTENTIONALLY BLANK ...
Page 22: ...Instruction Manual xxii Rev 6 March 2011 Part 17997 PAGE LEFT INTENTIONALLY BLANK ...
Page 36: ...Chapter 1 Introduction 1 10 Rev 6 March 2011 Part 17997 PAGE LEFT INTENTIONALLY BLANK ...
Page 114: ...Chapter 5 Before Installation 5 16 Rev 6 March 2011 Part 17997 PAGE LEFT INTENTIONALLY BLANK ...
Page 143: ...Installation Part 17997 Rev 6 March 2011 6 29 Figure 6 9 Installing the CPU Module ...
Page 236: ...Chapter 12 Troubleshooting 12 20 Rev 6 March 2011 Part 17997 PAGE LEFT INTENTIONALLY BLANK ...
Page 244: ...Chapter 13 Maintenance 13 8 Rev 6 March 2011 Part 17997 PAGE LEFT INTENTIONALLY BLANK ...
Page 254: ...Appendix B Mechanical Drawings B 2 Rev 6 March 2011 Part 17997 Figure B 3 1 5 In Adaptor ...
Page 255: ...Hydran 201Ti Intelligent Transmitter Part 17997 Rev 6 March 2011 B 3 Figure B 4 1 In Adaptor ...
Page 284: ...Appendix G Unit Conversions G 2 Rev 6 March 2011 Part 17997 PAGE LEFT INTENTIONALLY BLANK ...
Page 298: ...Appendix I Glossary I 12 Rev 6 March 2011 Part 17997 PAGE LEFT INTENTIONALLY BLANK ...
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