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Operating Manual

LDM250/LDM450/LDM650

Low Voltage

Multipoint unit

English

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Summary of Contents for LDM250

Page 1: ...Operating Manual LDM250 LDM450 LDM650 Low Voltage Multipoint unit English ...

Page 2: ... WD 724 250 450 650 Low Voltage Operating Manual 220627 docx 2 15 LDM 250 450 650 Low voltage Multipoint unit LDM 250 450 650 Low voltage Multipoint unit LDM 250 450 650 Low voltage Multipoint unit 3 English 9 ...

Page 3: ...CON 3 15 WD 724 250 450 650 Low Voltage Operating Manual 220627 docx LDM 250 450 650 Low voltage Multipoint unit LDM 250 450 650 Low voltage Multipoint unit LDM 250 450 650 Low voltage Multipoint unit Fig 1 ...

Page 4: ...INFICON WD 724 250 450 650 Low Voltage Operating Manual 220627 docx 4 15 LDM 250 450 650 Low voltage Multipoint unit LDM 250 450 650 Low voltage Multipoint unit Wiring diagram ...

Page 5: ...h Flash X X X X X Flash 0 Alarm B middle level Vdc 0 0 0 Flash 0 0 Flash X X X Flash X Alarm A high level Vdc 0 0 0 Flash 0 0 0 0 Flash X Flash 0 Summary Relay output Energised Not energised Alarm C NE E E E E NE NE NE NE NE E E Alarm B NE E E E E E E NE NE NE E E Alarm A NE E E E E E E E E NE E E Fault Relay D no time delay NE E E E E E E E E E NE NE Fault Relay D 4 hour time delay NE E E E E E E...

Page 6: ...INFICON WD 724 250 450 650 Low Voltage Operating Manual 220627 docx 6 15 LDM 250 450 650 Low voltage Multipoint unit LDM 250 450 650 Low voltage Multipoint unit ...

Page 7: ...INFICON 7 15 WD 724 250 450 650 Low Voltage Operating Manual 220627 docx LDM 250 450 650 Low voltage Multipoint unit LDM 250 450 650 Low voltage Multipoint unit ...

Page 8: ...INFICON WD 724 250 450 650 Low Voltage Operating Manual 220627 docx 8 15 LDM 250 450 650 Low voltage Multipoint unit LDM 250 450 650 Low voltage Multipoint unit ...

Page 9: ...s 2 Features 10 3 Models 11 4 Function 11 4 1 AUTO MANUAL ALARM RESET 11 4 2 ALARM TIME DELAY T1 11 4 3 RESET TEST SERVICE BUTTON 7 11 4 3 1 SERVICE MODE 12 4 3 2 FAULT MODE 12 4 4 INTERNAL BUZZER AND 24VDC AUXILIARY OUTPUT 12 4 5 Remote sensors 13 5 Location Installation 13 5 1 ALARM LEVELS CHANGING ALARM LEVELS 13 5 2 Function Control 13 6 Technical Data 13 ...

Page 10: ...alarm time delays Manual auto alarm reset for each channel Built in service function and self test program Four alarm relays with 230 volts rated SPDT contacts Failsafe relay operation on power loss Audible alarm Low voltage output for auxiliary alarm indication Please Note The LDM250 LDM450 and LDM650 are normally supplied with default set alarm thresholds These must be verified or reset during c...

Page 11: ...lay contacts change state As the gas concentration subsides the LEDs and relays will return to their normal state unless the manual reset function has been selected The audible alarm will initiate if it is configured with the respective alarm threshold and cannot be muted Technicians can inhibit the alarm by selecting Service Mode 4 1 AUTO MANUAL ALARM RESET DIP switch 5 no3 on each channel s cont...

Page 12: ...continuity of operation in the event of a power failure A 4 hour delay can be configured for relay D to prevent nuisance alarms This is activated by setting DIP switch 5 no4 on the respective channel card to ON The operation of the LEDs will remain unchanged 4 4 INTERNAL BUZZER AND 24VDC AUXILIARY OUTPUT The internal buzzer 1 and 24VDC output can be activated by the DIP switch 4 on the terminal bo...

Page 13: ...should ideally be located approximately 20cm above floor level Connect the sensor according to the wiring diagram NOTE For unused channels a jumper 8 must be mounted and a 100 kohms resistor attached must be installed between and S to prevent open sensor alarms Otherwise the channel will indicate a fault alarm When changing or replacing a LDMR a new calibration must be performed 5 1 ALARM LEVELS C...

Page 14: ...ion of sensor active and 3 alarm levels Inputs 2 4 or 6 channels 0 5VDC Alarm levels 3 levels channel individually set within 0 5 4 8V Hysteresis alarm levels 100mV Output relays 4 off Volt free contacts SPDT rated 230V AC 5amps Output voltage 24VDC max 150mA Ambient temp 0 Deg C 50 Deg C Sensor cable 3 x 0 75mm2 max 50m Screened 3 x 1 5mm2 max 150m Dimensions 180 x 255 x 60mm Glands 12 x M16 Spec...

Page 15: ...demarks of INFICON All other trademarks are the property of their res E Mail servicetools europe inficon com www inficonservicetools europe com Two Technology Place East Syracuse NY 13057 9714 USA E Mail service tools inficon com www inficonservicetools com Phone 1 800 344 3304 Fax 315 434 2520 Phone 49 221 56788 660 Fax 49 221 56788 9660 D 50968 Cologne Germany Bonner Strasse 498 2022 INFICON ...

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