Transcript
EN 8181-20 Safety rules for the construction and installation of lifts — Lifts for the transport of persons and goods — Part 20: Passenger and goods passenger lifts
Changes from EN 81 81--1 / 2 Prepared by:
I. G. Jones Dr G. Schiffner A. Kattainen
Convenor CEN/TC10/WG1 Convenor CEN/TC10/WG1/AH8 Convenor CEN/TC10/WG1/AH6
EN 8181-20 General, building interface and lift car
General and Principals • General – The list of risks considered is removed as it is now found in Clause 4. – Clarification of the persons to be safeguarded and the surrounding environment of the lift, including the provision of lifts to suit seismic conditions where necessary.
• Principals – Clarification of the required negotiations between the manufacturer and the user with regard to ensuring the lift is fit for purpose. – Clarification of the “standard” weight of a person considered in floor area/load calculations.
Oct 2013
3
Assumptions • Clarification that the safe design must include any allowed overload (up to 10%) • Clarification that even components declared as “sealed for life” must still be available for inspection. • The responsibility to ventilate the well, with information provided by the lift installer, becomes the responsibility of the building designer/architect. This is due to the wide coverage of the subject in National Building regulations which would otherwise conflict with the requirements of the new standards. • Assumption that the hydraulic fluid used is to ISO 6743-4 Oct 2013
4
Revision of EN 8181-1 & EN 8181-2 Scope
Scope • New Exclusions – All hydraulic product where the setting of the relief valve is greater than 50 Mpa. This should ensure that there is no conflict with other European legislation regarding pressure vessels. – Lifts installed into existing building where there may be restricted refuge spaces. In this case EN 81-21 should be followed.
Oct 2013
6
Revision of EN 8181-1 & EN 8181-2 Normative References
Normative References and Bibliography • The normative references have been reviewed and updated according to the requirements of the standard. – Where a standard is referenced with a date, then only that version of the standard is valid as a requirement in EN 81-20. – Where a standard is referenced without a date, then the latest version of that standard is valid as a requirement in EN 81-20.
• Standards references in the introduction or in notes are not requirements of EN 81-20 and so these are now included into the Bibliography at the end of EN 81-20.
Oct 2013
8
Revision of EN 8181-1 & EN 8181-2 Terms and Definitions
Definitions New definitions are given for: – – – – – – – – – –
Oct 2013
Authorized persons Competent persons Installer Maintenance Preliminary Operations Rescue Operations Safety Circuit Safety Component Special Tools Type Examination Certificate
10
Definitions • Revised definitions are given for: – Machine room – Machinery space
•
Deleted: – – – –
Oct 2013
Pulley space Instantaneous Safety Gear with buffered effect Minimum breaking load of a rope System reaction time 11
Revision of EN 8181-1 & EN 8181-2 List of Significant Hazards
EN414 Requirements • A new table is given for significant hazards accounted for in the standard using the list found in EN 14121-1, in accordance with the new EN 414 layout of the standard. No 1
Hazards as listed in Annex Bof EN ISO 12100
Relevant clauses
Mechanical hazards due to: Acceleration, deceleration (kinetic energy)
5.2.5; 5.3.6, 5.5.3; 5.6.2; 5.6.3; 5.6.6; 5.6.7; 5.8.2; 5.9.2; 5.9.3
Angular parts
Not Relevant
Approachof a moving element to a fixed part
5.2.5; 5.2.6; 5.5.8
• Due to this standard, all the clauses previously numbered from 5 to 16 will now be covered in a new Clause 5. This will mean nearly all clauses are renumbered from those that exist today. Oct 2013
13
Revision of EN 8181-1 & EN 8181-2 The Well
The Well • Where there is more than 11m between consecutive floors there is an option to have : – Intermediate emergency doors. – Adjacent lift cars with emergency doors – Electrical emergency operation. Changed back to EN81-1.
• Where there are accessible spaces under the pit a safety gear must be provide on the counterweight. – No longer permissible to use a “solid pier”.
• Ventilation of well to be the responsibility of the building designer, as stated in the introduction. Oct 2013
15
The Well (continued) Protection of ledges in the well Where there is no car roof balustrade and ledges exist in the well greater than 0,15m protection must be provided to prevent persons from standing in these areas.
OR
>0,15m
Oct 2013
>0,15m
16
The Well (continued) Doors for access, inspection and rescue – Inspection “traps” deleted and replaced with access or inspection doors.
8
3
– Door sizes Access doors to well Emergency doors in well Inspection doors in well Oct 2013
= 2m high x 0,6m wide = 1,8m high x 0,5m wide = 0,5m high x 0,5m wide 17
The Well (continued) Strength – All glass used in the well must be laminated. – New requirements for strength of walls, doors and pit floor. Force
Area
Deflection
Well walls (other than glass)
1000N
0,3m x 0,3m
≤ 1mm permanent ≤ 15mm elastic
Glass well walls
1000N
0,3m x 0,3m
No permanent deformation
Access , inspection and emergency doors in well
1000N
0,3m x 0,3m
≤ 15mm elastic
– Pit floor Should withstand loads from guides, equipment mounted on the guides and “push through” forces. Forces on buffers should be distributed amongst the number of buffers Oct 2013
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The Well (continued) Protection in the well All screens Should meet EN 13857 Strength 300N over 5cm2 without contacting moving parts.
Counterweight Screen Height from 0,3m to 2m from pit floor If more than 0,3m from the well wall, must be guarded to prevent access. Slots allowed for compensation ropes and for inspection
Shaft Division Screen - now been changed from 500mm from the side of the car to the nearest moving part, to 500mm from the inside of the car roof balustrade to the nearest moving part.
Oct 2013
19
The Well (continued) Headroom and Pit Refuge Spaces – Re-written to increase understanding of requirements. – New Table to show the extreme position of the car, from which the clearances are then measured.
Oct 2013
Position
Traction drives
Positive drives
Hydraulic drives
Highest position of car
Counterweight on f ully compressed buf f er + 0,035 v ² a
Car on f ully compressed upper buf f er
Ram in its ultimate position achiev ed through the means of ram stroke limitation + 0,035 v m²
Lowest position of car
Car on f ully compressed buf f er
Highest position of counterweight/balancing weight
Car on f ully compressed buf f er + 0,035 v ²
Lowest position of counterweight/balancing weight
Counterweight on f ully compressed buf f er
Car on f ully compressed lower buf f er Car on f ully compressed lower buf f er Car on f ully compressed upper buf f er
Car on f ully compressed buf f er Car on f ully compressed buf f er + 0,035 v d² Ram in its ultimate position achiev ed through the means of ram stroke limitation + 0,035 v m²
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The Well (continued) Headroom – One refuge space for each person on the car roof. – All refuge spaces must be of the same type. – Reduction allowed to the base of type two along one edge of 100mm x 300mm – Sign on car roof stating how many refuge spaces and what type – Sign on CWT giving dimension to buffer under normal operation.
Oct 2013
Type
Posture
Pictogram
Horizontal dimensions of the refuge space
Height of the refuge space
(m x m)
(m)
0,40 x 0,50
2,00
0,50 x 0,70
1,00
Standing 1
2
Crouching
Key for pictograms : Blackcolour : Yellow colour : Blackcolour
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The Well (continued) Headroom A: Distance ≥ 0,50 B: Distance ≥ 0,50 C: Distance ≥0,50 D: Distance ≥ 0,30 E: Distance ≤ 0,40 m X: Height of refuge spaces : Highest parts on the car roof : Car : Refuge space(s)
•
Oct 2013
Height above any area considered as a standing area (0,12m2 must be the same as the refuge space height. 22
The Well (continued) • • •
Access to pits > 2.5m deep must be by stairs New requirements for pit access ladders and to provide them with a safety contact where necessary. Normative text in clause 5, combined with a new normative annex giving the possible ladder types.
CHAIN OR ROPE FOR P REVE NTING REMOVAL FROM THE PIT
1
2
Ladder fixed in the pit (1) and always placed in the climbing position (2).
1
“Movable” ladder fastened (1) in the pit and can be placed in climbing position (2). Fixation of ladder feet for preventing tripping over
Oct 2013
2
2
23
The Well (continued) Pit – One refuge space for each person in the pit. – All refuge spaces must be of the same type. – Sign in pit stating how many refuge spaces and what type
Type
Posture
Pictogram
Horizontal dimensions of the refuge space
Height of the refuge space
(m x m)
(m)
1
Standing
0,40 x 0,50
2,00
2
Crouching
0,50 x 0,70
1,00
3
Laying
0,7 x 1,0
0,5
Key for pictograms : Blackcolour : Yellow colour : Blackcolour
Oct 2013
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The Well (continued) Pit Clearances – Distance between the bottom of the pit and the lowest parts of the car ≥ 0,50 m. – This distance may be reduced: • for any part of the apron or parts of the vertically sliding car door(s) to a minimum of 0,10 m within a horizontal distance of 0,15 m to the adjacent wall(s); • for car frame parts, safety gears, guide shoes, pawl devices, within a maximum horizontal distance from the guide rails according to Figures 6 and 7;
– Distance between the highest parts fixed in the pit, and the lowest parts of the car ≥ 0,30 m
Oct 2013
25
The Well (continued) Controls in the pit – New requirement for pit control station similar to that on the car roof. – New requirement for the position of stop switches ≤ 0,75m ≤ 0,75m ≥ 1,0m
> 1,6m
Oct 2013
≤ 1,2m
≤ 1,6m
≤ 2,0m
≥ 0,4m
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The Well (continued) • Services in the well – Fire Extinguisher (sprinkler) is now allowed in the well under certain conditions • Lift must go to exit floor and park with doors open before sprinkler discharges.
• Well Alarms – Alarms to comply with EN 81-28. – Where this standard has not been published in some countries TR 81-12 will advise on compliance.
Oct 2013
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The Well (continued) Lighting Requirements for Well, Machinery Spaces, Pulley rooms and Car Lighting Area
Requirement from EN81-1/2
Requirement from Interpretation
Requirement from EN81-20
Well
----20 lux throughout the well ---
---
50 lux
200 lux @ f loor lev el
@ places where persons can stand, work or mov e between working areas
200 lux @ places where persons can work 50 lux @ places where persons mov e between working areas
Machinery Space
200 lux @ f loor lev el
---
200 lux @ places where persons can work 50 lux @ places where persons mov e between working areas
Machinery Cabinet
200 lux @ f loor lev el
---
200 lux @ places where persons can work
Emergency and Test panel
50 lux @ dev ice
200 lux @ f loor lev el
200 lux @ dev ice
Pulley Room
100 lux @ pulley s
---
Landings
50 lux @ f loor
---
50 lux @ f loor
Car
50 lux @ f loor and controls
@ f loor (> than 100mm f rom walls and at controls)
100 lux @ controls and 1m abov e f loor > 100mm f rom wall
Car Emergency
1 w f or 1 hour
1 lux f or 1 hour @ alarm button and any instructions
5 lux f or 1 hour @ alarm button and 1m f rom f loor in centre of car
Car Roof Emergency
---
---
5 lux f or 1 hour @ alarm button and 1m f rom f loor in centre of car roof
Access to Well or Machinery Spaces Machine Room
Oct 2013
50 lux @ 1m f rom car roof 50 lux @ 1m f rom pit f loor Intermediate lamps Lamps at 0.5m f rom highest and lowest points Permanently lit
50 lux @ 1m f rom car roof 50 lux @ 1m f rom pit f loor 20 lux @ all other areas excluding shadows
200 lux @ places where persons can work 50 lux @ places where persons mov e between working areas
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Revision of EN 8181-1 & EN 8181-2 Machinery Spaces and Pulley Rooms
Machinery Spaces •
Access and Working – Access is now permitted through private premises where National Regulations allow. This must be subject to negotiation with the owner for rescue and maintenance. – Access ladders greater than 3m in height should be fitted with a means of fall protection (hoops) – The clear height for working is now 2.1m – New rules for the safe exit of persons from work areas in the pit and on the car roof. – New rules for guarding of pulleys in the well and the ability to access them in safety for maintenance. – Requirements for environmental protection in case of hydraulic lifts.
Oct 2013
30
Revision of EN 8181-1 & EN 8181-2 Landing Doors and Car Doors
Landing / Car Doors • The clauses for landing and car doors have been combined • All fire test certification of lift landing doors shall be to EN 81-58. TR 81-12 gives information for compliance where this standard has not been adopted. • Unlocking mechanisms – Horizontal Plane – Vertical Plane
Oct 2013
= 2,0m maximum height = 2.7m maximum height with extended length unlocking key.
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Landing / Car Doors (continued) Car Door to Well Dimensions •
Oct 2013
Not more than one gap of 0,5m x 0,2m allowed between consecutive landing doors.
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Landing / Car Doors (continued) •
All doors in future, including their frame, will be subject to pendulum impact testing at their weakest points.
•
The criteria for acceptance of the pendulum test is given in EN 81-20.
Oct 2013
34
Landing / Car Doors (continued) Forces and tests on doors Force to be applied
Acceptance criteria
Landing and car doors
300N over 5cm2
≤ 1mm permanent ≤ 15mm elastic
Landing and car doors
1000N over 100cm2
No significant damage affecting safety integrity
Landing and car doors with glass panels
Soft pendulum @ 800mm
No permanent deformation > 120mm
Hard pendulum @ 500mm
No cracks, no chips > 2mm
Soft pendulum @ 800mm
No permanent deformation > 120mm
Hard pendulum @ 500mm
No cracks, no chips > 2mm
Soft pendulum @ 800mm
No permanent deformation > 120mm
Side frames wider than 150mm
All doors with their retainers Oct 2013
35
Landing / Car Doors (continued) Door Protection – Kinetic energy of the landing and/or car door at the average closing speed shall not exceed 10 J. – A protective device shall automatically initiate re-opening of the door(s) in the event of a person crossing the entrance during the closing movement. The protective device may be rendered inoperative in the last 20 mm of door closing or gap;
In case of failure, or deactivation of the protective device, the kinetic energy of the doors shall be limited to 4J, if the lift is kept in operation, and an acoustic signal shall operate at any time the door(s) is (are) closing. – The effort needed to prevent the door closing shall not exceed 150 N excluding the first third of the travel of the door; – If the door closing is obstructed a re-opening of the door shall be initiated Oct 2013
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Landing / Car Doors (continued) Door Protection – Doors made from glass shall be provided with means to limit the opening force to 150 N and to stop the door in the event of an obstruction. – The thickness of the front edge of the leading glass panel(s) shall not be less than 20 mm. – To avoid dragging of children hands on doors made of glass means shall be provided to minimise the risk, by:
Making the glass opaque on the side exposed to the user to a height of minimum 1,10 m, or Sensing the presence of fingers at least up to 1,6 m above sill and stopping the door movement in opening direction, or Limiting the gap between door panels and frame to maximum 4 mm at least up to a minimum of 1,6 m above sill. Oct 2013
37
Landing / Car Doors (continued) Opening the car door •
In the unlocking zone it shall be possible with a force ≤ 300 N, to open the car and landing door by hand from: – –
•
In order to restrict the opening of the car door by persons inside the car a means shall be provided such that:
•
•
Oct 2013
The landing after the landing door has been unlocked with the triangular unlocking keyor being unlocked by the car door; Within the car.
When the car is moving it shall not be possible to open the car door when applying a force of 50 N, and When the car is outside of the zone defined in 5.3.8.1, it shall not be possible to open the car door more than 50 mm with a force of 1000 N, at the restrictor mechanism.
It shall be possible within the UCM zone, once the corresponding landing door has been opened, to open the car door from the landing without tools, other than the triangular unlocking key or tools being permanently available on site. This also applies to car doors locking devices. For lifts fitted with car door locks the opening of the car door from inside the car shall be possible only when the car is in the unlocking zone.
38
Revision of EN 8181-1 & EN 8181-2 Counterweight and Balancing Weight
Lift Car (continued) Load / Floor Area • • •
•
Car area measured from wall to wall car body inner dimensions excluding finishes, at a height 1 m from the floor. Recesses and extensions in the car walls are only permitted if their area is taken into account in the calculation of maximum available car area. Recesses or extensions above the car floor level, which cannot accommodate a person due to equipment placed in them need not be taken into account (e.g. niches for tip-up seats, recesses for intercoms). Where there is an available area between the entrance frame uprights when the doors are closed the following applies: – Where the area is less or equal than 100 mm deep up to any door panel (including fast and slow doors in the case of multi-panel doors), then it shall be excluded from the floor area; – Where the area is greater than 100 mm deep, the total available area shall be included in the floor area.
Oct 2013
40
Lift Car (continued) Goods Lifts / Handling Devices Either: • The weight of handling devices are included in the rated load; or • The weight of handling devices shall be considered separately from the rated load: – Handling devices are not transported with the load; – The car sling, the car safety gear, the guide rails, the machine brake, traction, hydraulic ram, the UCM protection means, etc, shall be based on the total load of rated load plus weight of handling devices – If due to loading and un-loading the maximum levelling accuracy is exceeded a mechanical device shall limit downward movement of the car to 20mm Oct 2013
41
Lift Car (continued) Car Design • Car internal finishes to be of limited combustibility to EN 13501-1. • Car lighting – 100 lux normal lighting – 5 lux emergency lighting inside car – 5 lux emergency lighting on car roof
• Mirrors used inside the car to be of safety glass to EN 12600 • New requirements for the strength of the car walls and car apron. Oct 2013
42
Lift Car (continued) • New requirements for the balustrade. – All lift cars regardless of well clearances to have a “toe board” around the car roof edge. – Use of 1100mm high balustrades when distance to well wall exceeds 500mm. – Must withstand horizontal force of 300N – Components can be used to form “equivalent” protection
Oct 2013
LEIA Seminar
43
Lift Car (continued) > 500 500 1100
700 > 300
> 300
300 ≤ 150
No balustrade required but needs toe board 100mm
Required balustrade Height ≥ 700 mm
≤ 150
Required balustrade Height ≥ 1100 mm 44
EN 8181-20 - Suspension
Suspension Means Strength and characteristics have to comply with EN 12385-5 – harmonised under Lifts Directive – similar requirements as in ISO 4344 – similar as previous requirements
Oct 2013
46
Suspension Means
(continued)
• Rope terminations – deleted: resin filled sockets, rope grips, splices eyes and other equivalent systems – self-tightened wedge type sockets (e.g. EN 13411-6, 7) – ferrule secured eyes (e.g. EN 13411-3) – new: swage terminals (e.g. EN 13411-8)
Oct 2013
47
Suspension Means
(continued)
• New technologies (steel ropes < 8 mm, fibre ropes, belts) not incorporated at this time – concerns due to patents or copyright protection – may be incorporated at next amendment
Oct 2013
48
Compensation Means • Compensation means – ≤ 3 m/s other compensation means than ropes can be used – > 3 m/s only compensation ropes with tensioning device shall be used – > 3,5 m/s only additionally anti-rebound device has to be provided
• Other compensation means than ropes – min. safety factor 5 – > 1,75 m/s guiding at vicinity of loop
Oct 2013
49
Protection of sheaves, pulleys and sprockets
added
Oct 2013
50
Protection of sheaves, pulleys and sprockets
• Example for nib guard
• Position and number of rope retainers – if wrap angle > 120° and > 60° are below horizontal axis 3 retainers
– other cases 2 retainers Oct 2013
51
EN 8181-20 - Safety gear, Overspeed and UCM
Protection means for traction and positive drive lifts
No change of solutions Oct 2013
53
Protection means for hydraulic drive lifts
Reference to relevelling added Clamping device deleted
Oct 2013
54
Safety Gear •
Previous note deleted The safety gear operating devices shall be preferably be located at the lower part of the car
•
Additional information on data plate – type of safety gear – if adjustable, load range or adjustment parameter if the relationship with the load range is specified in instruction manual
•
Oct 2013
Instantaneous safety gear with buffered effect deleted
55
Safety Gear (continued) •
Release of the safety gear shall be possible at all load conditions up to rated load – either by means defined for emergency operations – or in application of procedures available on site
•
Intervention of a competent person to set lift to normal operation – after release of safety gear (before: release by competent person) – main switch operation not sufficient
•
Seal has to prevent re-adjustment without breaking the seal
•
Accidental tripping shall be prevented as far as possible
Oct 2013
56
Overspeed Governor • • •
•
Requirement for higher tripping speed of overspeed governor for counterweight or balancing weight deleted Special design for heavy rated load and low speed deleted Requirement for sufficiently short response time not permitting dangerous speeds replaced by requirement for maximum distance between tripping points of 250 mm 250 Type examination (EN 81-50) – at least 2 tests with acceleration 0,9 – 1,0 gn to check strength of overspeed governor
Oct 2013
57
Overspeed Governor • • • • •
Oct 2013
(continued)
Governor ropes have to comply with EN 12385-5 Requirement for min. rope diameter 6 mm deleted Seal has to prevent re-adjustment without braking the seal Additional information on data plate – type of overspeed governor Requirements for testing of tripping means by breakage of suspension means – actuating the mechanism for tests without entering the well – max. force for actuating 400 N
58
Rupture valve and restrictor • Rupture valves and restrictors have to be accessible for adjustment and inspection directly from the car roof or the pit • Means allowing to reach the tripping flow of the rupture valve or restrictor shall be accessible from outside the well
Oct 2013
59
Pawl Device • •
Oct 2013
Energy accumulation type buffers with buffered return movement deleted Checking of position of pawl device – if not in retracted position electric safety device shall prevent normal movements if not in extended position electric (safety) device shall prevent opening of doors and normal movements pawl device shall be fully retracted and car be sent to lowest level doors shall be opened to allow persons to leave the car intervention of competent person
60
Ascending car overspeed protection means •
•
•
Oct 2013
ACOP shall be active in – normal operation – manual rescue operation, if no direct observation of the machine and no other means for limiting the speed If machine brake is used as ACOP – self-monitoring (subject to type test as for UCMP) – may be placed on same shaft as traction sheave if shaft has only 2 bearings Additional information on data plate – type of ACOP
61
Unintended car movement protection means •
Specific case added for lifts without relevelling and machine brake certified as UCM brake no detection device needed
•
If machine brake is used as UCM brake – may be placed on same shaft as traction sheave if shaft has only 2 bearings
•
Additional requirement for max. 200 mm gap for partly enclosed wells on landing side
Oct 2013
62
EN 8181-20 - Guide rails
Guide Rails • •
Guide rails for low speeds manufactured with other methods than cold drawn or machined deleted Guide rail fixings containing non-metallic elements –
•
Safe operation has to be ensure by taking into account combination of – – – –
Oct 2013
failure of non-metallic elements has to be considered for permissible deflections
deflections of guide rails deflection of brackets and structure play in guide shoes straightness of guide rail
64
Guide Rails •
Calculation has to consider in addition – – –
•
Oct 2013
(continued)
weight of guide rails push through forces in rail clips forces and torques due to auxiliary equipment including impact factors
Push through forces of rail clips may be ignored for travel height ≤ 40 m –
for standing or hanging guide rails
–
for freely hanging guide rails (no fixing point)
65
Guide Rails •
Vertical sill load – –
•
Oct 2013
(continued)
factor 0,85 for goods passenger lifts only in case of handling devices not included in rated load if guide shoes are close to brackets (≤ 10 % bracket distance) sill load may be ignored
Table for combination of load cases revised
66
Guide Rails •
•
Oct 2013
(continued)
Vertical sill load – factor 0,85 for goods passenger lifts only in case of handling devices not included in rated load – if guide shoes are close to brackets (≤ 10 % bracket distance) sill load may be ignored Table for combination of load cases revised
67
EN 8181-20 - Buffers
Buffers •
Deleted – – –
•
Max. stroke for hydraulic lifts at lowest landing when car is resting on buffers (max. 0,12 m vertical sill distance) energy accumulation type buffers with buffered return movement Annex L with diagram for buffer strokes
Buffers fixed to the car or counterweight – shall hit an obstacle (pedestal) with min. 300 mm height – exception for buffers fixed to counterweight with a screen extending from max. 50 mm above pit floor
Oct 2013
69
Buffers (continued) •
Additional information on data plate – –
• •
•
Max. peak retardation 6 gn for energy accumulation type buffers with non-linear characteristic (PU buffers) Fixing elements shall not be considered for the fully compressed situation (90 %) for buffers with non-linear characteristic Reduced buffer stroke – –
Oct 2013
type of buffer specification of liquid in case of hydraulic buffers
for rated speeds above 2,5 m/s min. buffer stroke 420 mm
70
EN 8181-20 - Machines
Machine Break • Brake function test from outside of well • Brake release by manual or powered means for emergency use • Failure of release means not affecting normal operation of the brake • Instructions for brake release located near release means
Oct 2013
72
Emergency Operation • Effort to move car manually with brake released now 150N for nominally balanced car and 400N for fully loaded upwards. • By gravity or by mechanical or electrical means independent from the mains supply • Electrical means, power supply must be able to move the car with any load to an adjacent landing within 1 hour after a breakdown
Oct 2013
73
Emergency Operation •
•
Oct 2013
Mechanical emergency operation means – max. effort ≤ 150 N to move the car to a landing – in case of removable means (e.g. handwheels) to be located in an easily accessible place to be suitably marked in case of risk of confusion electric safety device shall check when the means is about to be coupled Electrical emergency operation means – power shall be able to move the car to an adjacent landing within 1 hour after breakdown – max. speed 0,3 m/s
74
EN 8181-20 – Stopping the Machine
Traction and Positive Drive Removing the power which can cause rotation of the motor
Oct 2013
76
Hydraulic Drive - Upwards
Oct 2013
77
Hydraulic Drive - Downwards
Oct 2013
78
EN 8181-20 – Electrical Installation & Appliances
Electrical Installation Limits of application • Well lighting now under EN81 rules. • The national requirements relating to electricity supply circuits apply as far as the input terminals of the switches. • The national requirements apply to the whole lighting and socket outlet circuits of the machine room and the pulley room. • The electrical equipment of the lift shall comply with the requirements of EN 60204-1 (Electrical equipment of machines) as referenced in the clauses. Oct 2013
80
Electrical Installation Limits of application
(continued)
continued
• Dimension now given for position of equipment to allow maintenance access. • Electronic control equipment of brake, motor and down valves shall comply with safety circuit immunity requirements of EN 12016.
Oct 2013
81
Electrical Installation
(continued)
Limits of application continue • Under normal operation the temperature of directly accessible equipment shall not exceed the limits given in HD/IEC 60364-4-42 Table 42.1.
Oct 2013
82
Electrical Installation
(continued)
Protection against Electric shock • Protection against electrical shock shall comply with IEC 60364-4-41 and EN 50274. • Additional protection by means of 30 mA RCD – Socket outlets – Control circuits for landing controls and indicators and the safety chain having higher voltage than 50 V AC, and – Circuits on the lift car having higher voltage than 50 V AC
• Labelling for electrical hazards.
Oct 2013
83
Electrical Installation
(continued)
Contactors, contactor relays, components of safety circuits Symbol on Symbol on •
•
•
Oct 2013
Main contactors shall have auxiliary contact linked with power contacts (mirror contact) according to EN 60947-4-1, Annex F Auxiliary contacts of main contactors and Contactor relays shall have mechanically linked contact elements according to Annex L of EN 60947-5-1:2004; Relays shall shall have mechanically linked contacts according to EN 50205, in order to ensure that any make contact(s) and any break contact(s) cannot be in closed position simultaneously.
device
circuit diagram
Same as above can be used
84
Electrical Installation
(continued)
Protection of electrical equipment • Protection of motors against overheating shall be provided for each motor.
Main switches • Main switch shall comply with EN 60204-1 • Alarm device battery charger can be supplied from car light supply or from control supply Oct 2013
85
Electrical Installation
(continued)
Remotely controlled Main switch
Oct 2013
86
Electrical Installation
(continued)
Electric wiring • Wiring shall comply with EN 60204-1 as referenced
Control of the supply for lighting and socket outlets • Additional well lighting lamps on the car roof shall be connected to the car light circuit switched from the car roof. Oct 2013
87
Electrical Installation
(continued)
Protection against electric faults An earth fault in a circuit in which there is an electric safety device or in a circuit controlling the brake or in a circuit controlling the down valve shall stop the lift If first earth fault alone is not dangerous then continue to destination is accepted Oct 2013
88
EN 8181-20 – Electric Safety Devices
Electric Safety Devices – Classical Safety Chain
Oct 2013
90
Electric Safety Devices – Different Types
Oct 2013
91
Electric Safety Devices Actuation of electric safety devices • Mechanical failures which can impact the safety function shall be considered
PESSRAL • When the design includes software, it shall be possible to identify the failure state of the device, either by built-in system or by an external tool, if this external tool is a special tool, it shall be available on the site.
Oct 2013
92
Electric Safety Devices
(continued)
Annex A • Tables A.1 and A.2 combined • SIL levels of electric safety devices have been mostly set to be the same in comparative ISO standards. • Exception that check of retardation in case of reduced stroke buffers is now SIL 3 due to greater reduction
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EN 8181-20 - Controls
Controls
(continued)
• All docking operations are deleted as no longer being of relevance to the market. • The overload shall be detected at the latest when the rated load is exceeded by 10% with a minimum of 75 kg. • Monitoring the normal slowdown of the machine in case of reduced buffer stroke shall be electric safety devices in conformity with 5.11.2. • Preliminary operations added
Oct 2013
95
Controls
(continued)
Inspection operation • Inspection control station added in to the pit. • Blue “Run” button added to act with up and down buttons. • Push buttons shall comply to EN 60947-5-1. • Button colors derived from EN 60204-1. Inspection speed shall not exceed 0,30 m/s when vertical distance above any standing area on car roof or in pit is 2,0 m or less. If more than one inspection control station is switched to “INSPECTION", it shall not be possible to move the car from any of them unless the same push buttons on the inspection control stations are operated simultaneously. Oct 2013
96
Controls
(continued)
Emergency Electrical Operation • Now required also for hydraulic lift • Maximum speed 0.3m/s • Inspection operation priority over Emergency Electrical Operation more clearly defined
Oct 2013
97
Controls
(continued)
Protection for maintenance operations • The control system shall be provided with means to: – – – –
Prevent the lift from answering to landing calls Prevent the lift from answering remote commands Disable the automatic door operation Give at least terminal floor calls for maintenance.
• The means shall be clearly indicated and only accessible to authorized persons.
Oct 2013
98
Controls
(continued)
Landing and car door bypass device • Required for maintenance purposes in the control panel or in the emergency and test panel • Only car or landing door contacts can be bypassed at one time • Separate monitoring signal for car door shall prove that car door is closed before movement
Oct 2013
99
Controls
(continued)
Faulty door contact monitoring • Correct operation of Car door and Landing door electric safety devices and car door monitoring signal used for bypass function shall be monitored • Short circuits and jumpers shall be detected and normal operation prevented
Oct 2013
100
