Honeywell Touchpoint 1 Manual
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Page 21
Installation TP1MAN Issue 4_03-10 (MAN0630)21
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Installation TP1MAN Issue 4_03-10 (MAN0630)22 Generic Gas Detector Connections The following diagrams show generic installation connections for other gas detectors. 3-Wire mV Detector 3-Wire 4-20 mA Detector 1 2 31 2 3 +ve Signal-ve Signal -ve +ve 1 2 33Detector Controller 1 2 31 2 3 +ve Signal+ve Signal -ve -ve 1 2 33Detector Controller
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Installation TP1MAN Issue 4_03-10 (MAN0630)23 2-Wire 4-20 mA Detector Maximum Cable Lengths To calculate the maximum cable run length from power source to the detector refer to the following example diagram and formula. Rloop = (Vcontroller — Vdetector min) / Idetector Maximum cable run length = Rloop / cable per metre resistance where: R loop = maximum working cable run resistance V controller = maximum available supply voltage at controller V detector min = minimum voltage at which the...
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Installation TP1MAN Issue 4_03-10 (MAN0630)24 Vsupply Vsensor Imax 0 V Signal Cable run ControllerDetector R l
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Operation TP1MAN Issue 4_03-10 (MAN0630)25 WA R N I N G Access to the interior of the controller, when carrying out any work, must only be conducted by trained personnel. Switch off and isolate the power supply to the controller, or obtain a hot work permit, when access is required. Take any necessary precautions to prevent false alarms. Once powered, Touchpoint 1 displays gas concentration, alarm, fault and status information on its view screen. Touchpoint 1 is controlled and configured...
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Operation TP1MAN Issue 4_03-10 (MAN0630)26 Information on the Display The controller features a user interface that, during normal operation, displays gas reading information, and also system fault and information messages. It displays status and configuration information about the system via a menu options accessed and controlled via four buttons (3 are hidden) below the display, see page 31 and page 32. An audible alarm sounds whenever an abnormal event occurs, e.g. gas alarm, fault, etc. 3 LEDs...
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Operation TP1MAN Issue 4_03-10 (MAN0630)27 Operational StateStatus 4-20 mA Output Examples (for 200ppm range) DisplayAudible AlarmRelays Normal operation OffAlarm Relay 1 de-energized Alarm Relay 2 de-energized Fault relay energized (default) Alarm set point indicators (bars) flash4mA Alarm 1 OnAlarm Relay 1 energized Alarm Relay 2 de-energized Fault relay energized8.16 mA Key: LED on LED off LED flashingAlarm 1, A 1, flashing (and/or A2, and/or F may flash) ALARMPOWER FAULT 000 ALARMPOWER...
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Operation TP1MAN Issue 4_03-10 (MAN0630)28 Alarm 2 OnAlarm Relay 1 energized Alarm Relay 2 energized Fault relay energized15.84 mA Greater than full scale alarm OnAlarm Relay 1 energized Alarm Relay 2 energized Fault relay energized22 mA Operational StateStatus 4-20 mA Output Examples (for 200ppm range) DisplayAudible AlarmRelays Key: LED on LED off LED flashingAlarm 1, A 1, flashing (and/or A2, and/or F may flash) ALARMPOWER FAULT ALARMPOWER FAULT
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Operation TP1MAN Issue 4_03-10 (MAN0630)29 Deadband (negative drift 5%) OnAlarm Relay 1 de-energized Alarm Relay 2 de-energized Fault relay de-energized2.5 - 3.2 mA Operational StateStatus 4-20 mA Output Examples (for 200ppm range) DisplayAudible AlarmRelays Key: LED on LED off LED flashingAlarm 1, A 1, flashing (and/or A2, and/or F may flash) ALARMPOWER FAULT ALARMPOWER FAULT
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Operation TP1MAN Issue 4_03-10 (MAN0630)30 Fault (open/short circuit) OnAlarm Relay 1 de-energized Alarm Relay 2 de-energized Fault relay de-energized0 mA InhibitOffAlarm Relay 1 de-energized Alarm Relay 2 de-energized Fault relay energized1.5 - 2.5 mA Operational StateStatus 4-20 mA Output Examples (for 200ppm range) DisplayAudible AlarmRelays Key: LED on LED off LED flashingAlarm 1, A 1, flashing (and/or A2, and/or F may flash)