Summary of Contents for Stannah NEXI
- Page 1 NEXI TWO FLOOR LIFT CONTROLLER REFERENCE MANUAL Issue 01.06.03 010603/f:\electnic\wiring manuals\nexi reference manual\nexi.doc...
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Page 2: Table Of Contents
INSTALLATION AND PROGRAMMING MANUAL CONTENTS 1. Introduction. Page 4. 1.1 Nexi Lift Controller standard features. 2. Overview of Nexi Lift Controller. Page 5. 2.1 Environmental requirements and standards. 2.2 Unit construction. 2.3 Power supply requirements. 2.4 Input voltages. 2.5 Output voltages. - Page 3 APPENDIX A: Technical Specification. Page 21. APPENDIX B: Template for Mounting points. Page 22. APPENDIX C: Nexi I/O PCB abbreviations/input ratings and descriptions. Page 23. APPENDIX D: Nexi I/O PCB abbreviations/output ratings and descriptions. Page 24. APPENDIX E: Typical wiring diagram.
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Page 4: Introduction
INTRODUCTION The Nexi Lift Controller is a derivative of the Nexus Lift Controller and has been specifically designed for cost effective two floor installations incorporating an improved lift positioning and limit arrangement. The Nexi Lift Controller also complies with EN81/2 1998, EN12015 and EN12016 for EMC compliance. -
Page 5: Environmental Requirements And Standards
2.3 Power supply requirements: 9V ac or dc, 700mA ac. The Nexi controller can be powered from a 9 Volts ac or dc supply and draws a maximum current of 700mA. A transformer winding with a 20 VA Rating would provide a suitable power source. -
Page 6: Input Voltages
See Appendix C for detailed list of Inputs and ratings. All the inputs with the exception of the Alarm input, of the Nexi Lift Controller are rated for a nominal voltage of 110 V ac or dc. The full range is for 60v to 120v. The Alarm input is rated for 12 or 24 V ac or dc. -
Page 7: I/O Pcb Led Indication
2.7 I/O PCB LED indication. See Appendix C for details of abbreviations and status. The LEDs on the Nexi I/O PCB are used to indicate the status of the lift. The LEDs are grouped as follows: Power Supply and Lift Status: 110VAC, ALARM, GR and AF. -
Page 8: Manner Of Operation
MANNER OF OPERATION The manner of operation of the Nexi Lift Controller is the same as the Generation 1 and 2 and Nexus Lift Controllers. If you are familiar with these controllers you will only need to browse through this section. -
Page 9: Operation Of Floor Levelling
The UPR and DPR inputs are used to indicate the position of floor level. These inputs are monitored by the Nexi Lift Controller so that the lift can maintain its floor level. If UPR or DPR are seen to turn OFF the lift will wait the initial re-level delay (8 seconds), before re-levelling. -
Page 10: Lift Over Journey Protection
Manner of operation 3.7 Floor Reset. The RSU and RSD inputs can be found on the RUN group of inputs. The floor reset inputs RSU (Reset Up) and RSD (Reset Down) are used to reset the lift position. When one of the inputs is seen to be ON the current lift position is dropped and replaced with the RSU or RSD floor. -
Page 11: Advance Door Opening
Manner of operation 3.11 Advance Door opening. Advance Door opening is a programmable option. When selected, the doors will begin to open on the occurrence of RSU or RSD and UPR or DPR. The lift will stop when UPR, DPR and either RSU or RSD are all ON and the Stop Delay has timed out. -
Page 12: Inputs And Function
9V AC/DC Inputs. 9V ac or dc. These are the power supply inputs to the Nexi Lift Controller. The input is protected by an internal resetable fuse. To reset the fuse the power must be cycled. The 9V supply draws a maximum current of 700mA. A transformer winding with a 20 VA rating would provide a suitable power source. - Page 13 Inputs and function 4.2 Safety Circuit Inputs. Summary. ALRM, B-, GR, AF. ALRM: Alarm input. (12 to 24V ac/dc). The Alarm input monitors the Alarm push in the lift car. If the doors are closed and the input is energised for more than 3 seconds, the Alarm acknowledged (ALRT Output) will be activated.
- Page 14 Inputs and function HSC: High Speed Contactor. The HSC input is used to confirm that the HSC contactor has pulled in and that a fault condition has not occurred. When the output HSR turns ON, the HSC input must turn ON before the fixed 1 second Contactor delay times out.
- Page 15 Inputs and function CDC: Close Door Contactor and ODC: Open Door Contactor. The ODC and CDC inputs are used to confirm that the ODC and CDC contactors have pulled in and that a fault condition has not occurred. When the output ODR or CDR turns ON, the ODC or CDC input must turn ON before the 1 second Contactor fixed delay times out.
- Page 16 Inputs and function TRC: Test Control. (Normally ON). The Nexi Lift Controller is placed in Test Control when this input is OFF. All the RUN and DOOR control outputs are inactive and the lift is controlled by the car top controls.
- Page 17 OUTPUTS AND FUNCTION The outputs from the Nexi Lift Controller are grouped together as per function. These groups are: Run and Door Control, Call Acceptance, Position and Direction and Lift Status Outputs. The outputs are situated along the edge of the unit and are clearly labelled.
- Page 18 Outputs and function AC: Anticreep (levelling) output. Relay contact. The AC output is energised for re-levelling the lift or for advance door opening. The output is used to enable the lock by pass circuit. See Appendix E for Typical wiring diagram.
- Page 19 Outputs and function 5.3 Lift Status outputs. Summary. LATCH, ALRT, CLT, OLW, LIS. LATCH: Latched fault indication. Transistor 12 to 24vdc. This output will latch ON when a latch fault condition occurs, e.g. Over Journey Time exceeded or Ultimate Limit trip. To clear a latched fault, Push in the reset link on the control panel, switch the mains power OFF for 10 seconds and then switch the mains power ON.
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Page 20: Programmable Options
DIL switches. The DIL switches are located in the bottom left corner of the Nexi I/O PCB and are labelled Door Open Time and Journey Time. Each DIL switch has 4 toggle switches using a binary format to allow up to 16 selectable delays. See the table below for the switch configurations and corresponding times. -
Page 21: Appendix A: Technical Specification
EMC Immunity complies to EN 12016. Specifications are subject to change without prior notification. Stannah Lifts Ltd 2001 – ALL RIGHTS RESERVED. Stannah Lifts Ltd, Anton Mill, Andover, Hampshire, SP10 2NX, England. Tel: (01264) 339090. Fax: (01264) 337942. Email: stannah.co.uk. - Page 22 APPENDIX B: TEMPLATE FOR MOUNTING POINTS Page 22 of 28...
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Page 23: Run Inputs
APPENDIX C: Nexi I/O PCB abbreviations, input ratings and description. NOTE: Terminals are numbered from top to bottom when viewed end on. That is pin 1 at top most end of the connector. RUN INPUTS (PL3). INPUT DESCRIPTION VOLTAGE NOTES... -
Page 24: Lift Status Outputs
APPENDIX D: Nexi I/O PCB abbreviations, output ratings and description. NOTE: Terminals are numbered from bottom to top when viewed end on. That is pin 1 at bottom most end of the connector. LIFT STATUS OUTPUTS (PL4). OUTPUT DESCRIPTION VOLTAGE NOTES Feed input. - Page 25 APPENDIX E: TYPICAL NEXI KEY WIRING DIAGRAM Page 25 of 28...
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Page 26: Lift Speed
APPENDIX F: Dimensions for UPR, DPR, RSU and RSD The Nexi lift controller has been designed such that any input must be present for at least 0.08 seconds before it is registered as a valid input. This time delay is to negate any spurious spikes or blips, which could cause inaccurate signals to be seen by the controller. - Page 27 APPENDIX G: Standard Layout for Shaft Switches Ultimate limit Test limit TOP FLOOR LEVEL 50mm 50mm BOTTOM FLOOR LEVEL Page 27 of 28...
- Page 28 1. Set Lift to a safe condition and isolate control panel from all power feeds. Changing program memory: The program memory chip is mounted in a socket and is labelled ‘NEXI VER 1.01’; the version number may have changed. Note the orientation of the chip. The orientation of the chip is denoted by a NOTCH at one end.
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