EN81.20 and EN81.50 RULES

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The new EN 81-20 replace the EN 81-2 & EN 81-1.EN 81-20: Passengers & Good/Passenger LiftsContains requirements for complete passenger or goods passenger lift installations independent of the driving system.

EN 81-20 MAIN FEATURESIn the pit the following items must be present:1. An inspection box must be (permanently) available

(further on the cabin roof);2. Stopping device accessible from the pit fl oor and

once every shaft lift door is open;3. Socket (Power Point);4. Shaft lift lights available once every shaft lift door

is open;5. An audible and fl ashing warning device.

5.2.1.5 Electric equipment in the pit and in machinery spaces and pulley rooms

5.2.1.5.1 There shall be in the pit:

Stopping device(s) visible and accessible on opening the door(s) to the pit, and from the pit fl oor, in conformity with the requirements of 5.12.1.11.For pits with depth less than or equal to 1,60 m the stopping device(s) shall be located:

• within a vertical distance of minimum 0,40 m above the lowest landing fl oor and a maximum of 2,0 m from the pit fl oor;

• within a horizontal distance of maximum 0,75 m from the door frame inner edge.

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PIT INSPECTION BOXGiovenzana developed new PIT inspection box named TLP5 suitable for EN81-20 IP65.

GENERAL CHARACTERISTICS• Lifting Platforms and tails lifts application• In conformity to IEC/EN 60947-5-1, UNI EN 1570• Thermoplastic boxes, shocks and heat resistance• Contact blocks IP 20 with spring connection• Contact block NC PCW01, Contact block NO PCW10• Two directions mechanically interlocked• Double insulating material with IP 65 protection degree IEC/EN 60529• Laser engraved push buttons• Pendant or solid fixing• Skin stop cable gland M20

5.10.7 Lighting and socket outlets

5.10.7.1 The electric lighting supplies to the car, the well and the machinery spaces and pulley rooms, and emergency and test panel(s) (5.2.6.6), shall be independent of the supply to the machine, either through another circuit or through connection to the machine supply circuit on the supply side of the main switch or the main switches laid down in 5.10.5.

5.10.7.2 The supply to socket outlets required on the car roof, in the machinery spaces, in pulley rooms and in the pit, shall be taken from the circuits referred to in 5.10.7.1.

These socket outlets shall be of type 2 P + PE, 250 V, supplied directly.

5.11.2.2 Safety contactsSafety contacts shall comply with the requirements of EN 60947-5-1:2004, Annex K with a minimum protection degree of IP4X (EN 60529) and a mechanical durability suitable for its purpose (at least 106 operating cycles) or shall fulfi l the following requirements:

• 5.11.2.2.1 The operation of a safety contact shall be by positive separation of the circuit-breaking devices. This separation shall occur even if the contacts have welded together.

• The design of a safety contact shall be such as to minimize the risk of a short-circuit resulting from component failure.

NOTE: Positive opening is achieved when all the contact-breaking elements are brought to their open position and when for a signifi cant part of the travel there are no resilient members (e.g. springs) between the moving contacts and the part of the actuator to which the actuating force is applied.

• 5.11.2.2.2 The safety contacts shall be provided for a rated insulation voltage of 250 V if the enclosure provides a degree of protection of at least IP 4X (EN 60529), or 500 V if the degree of protection of the enclosure is less than IP 4X (EN 60529).

All Giovenzana stopping devices (mushrooms) are meeting new machinery room rule EN 60204-1 mounting our new fast trigger contact block PCW01FT.The NC contact will open in the event of accidental release of the contact block from the base. In the unlikely event of one of the supports breaking the

contact is designed to intervene and open the circuit which will block any further operation of the machine.

This is an important step in accident prevention and emergency device intervention.

With a small amount of euro , operator can be 100% of the stopping device effectiveness

Normal l y closed

Normal l y open

Normal l y open

5.12.1.5 Control of inspection operation

5.12.1.5.1 Design requirements

5.12.1.5.1.1 To facilitate inspection and maintenance, a readily operable inspection control station shall be permanently installed:a) On the car roof;b) In the pit;c) In the car (if there are areas of work in the car);d) On a platform (if there are areas of work on the platform).

5.12.1.5.1.2 The inspection control station shall consist of:a) a switch (inspection operation switch) which shall satisfy the requirements for electric safety devices (5.11.2). This switch, which shall be bi-stable, shall be protected against involuntary operation;b) direction push buttons “UP” and “DOWN” protected against accidental operation with the direction of movement clearly indicated;c) a push button “RUN” protected against accidental operation;d) a stopping device in conformity with 5.12.1.11.

The control station may also incorporate special switches protected against accidental operation for controlling the mechanism of doors from the car roof.

Return to normal operation of the liftThe return to normal operation of the lift shall only be effected by switching the inspection operation swi-tch(es) back to normal. Additionally return to normal operation of the lift from pit inspection station shall only be made under following conditions:

a) Landing doors giving access to the pit are closed and locked;b) All stopping devices in pit are inactive;c) Electrical reset device outside the well is operated:

1. In conjunction of emergency unlocking key of the door giving access to the pit, or

2. Accessible to authorised persons only, e. g. insi-de a locked cabinet located in close proximity of the door giving access to the pit.

Precautions shall be taken to prevent all involuntary movement of the car in the event of inspection opera-tion. The movement of the car in inspection operation shall solely depend on constant pressure on a direction and the “RUN” push-button. It shall be possible to ope-rate the “RUN” button and a direction button with one hand simultaneously.The inspection operation electric safety device shall be bypassed by one of the following solutions:

a) A series connection of a direction and the “RUN” pu-sh-button. These push buttons shall belong to the fol-lowing categories as defi ned in EN 60947-5-1:2004:• AC-15 for safety contacts in A.C. circuits• DC-13 for safety contacts in D.C. circuitsThe durability shall be at least 1.000.000 operating cycles mechanical and electrical related to the applied load.

b) An electric safety device in accordance with 5.11.2 which is monitoring correct operation of direction and “RUN” push buttons.

UPpushbutton

RUNpushbutton

DOWNpushbutton

INSPECTION

NORMAL

STOPdevice

ALARMpushbutton

Colors and Design Symbols

THE INNOVATIONGiovenzana International B.V., widely recognized as a leader in elevator technology and the name that ope-rators associate with security and quality, has created the new GM series of inspection boxes (complies with International Standard EN 81.20 and EN 81.50).

The ergonomic design ensures maximum operator safety. Giovenzana has applied its new design philo-sophy which incorporates these rules:

• Mushroom stopping device in accordance with IEC / EN 60947-5-5

• Mandatory Run button

• Operators are protected against accidental impacts at all times

• Cam switch (not selector) binding to the norm for in-spection operation with solid drive and without mar-gin of error in the switching

• • Contact blocks with spring clamp conform to

EN 60068-2-6 and EN 60068-2-27 and vibra-tion resistant with IP20 degree of protection

• AC-15 and DC-13 contact blocks in accordance with EN 60947-5-1:2004 (1M cycles)

Giovenzana designs and implements safety compo-nents for the world’s major chain lift manufacturers.

5.12.1.8 Landing and car door bypass device

5.12.1.8.1 For maintenance on landing door-, car door- and door locking contacts a bypass device shall be provided in the control panel or emergency and test panel.

5.12.1.8.2 The device(s) shall be a switch protected against unintended use by mechanically movable means (e.g. cover, security cap) permanently installed, or a plug socket combination which shall satisfy the requirements for electric safety devices according 5.11.2.

5.12.1.8.3 The landing and car door bypass devices shall be identifi able by the word “BYPASS” written on or near to them. In addition, the contacts to be bypassed shall be indicated with the identifi ers according to the electrical diagrams.Alternatively the symbol shown in Figure 23 together with identifi er according to electric diagrams can be used.

DS Example of designation found on the wiring diagramFigure 23 — Bypass pictogram

The activation state of the bypass device(s) shall be clearly indicated. The following conditions for functioning shall be satisfi ed:

a) the normal operation controls, including the operation of any automatic power operated doors shall be neutralized;

b) bypassing of the contacts of the landing doors (5.3.9.4, 5.3.11.2), the landing door locks (5.3.9.1), the car door(s) (5.3.13.2) and the car door locks (5.3.9.2) shall be possible;

c) it shall not be possible to bypass the contacts of the car door(s) and landing doors at the same time;

d) a separate monitoring signal shall be provided to check that the car door(s) is/are in the closed position in order to allow a car movement with bypassed car door closed contact(s). This applies also if the car doorclosed contact(s) and the car door locked contact(s) are combined;

e) in case of manually operated landing doors, it shall not be possible to bypass the contacts of the landingdoors (5.3.9.4) and the landing door locks (5.3.9.1) at the same time;

f) movement of the car shall only be possible in inspection operation (5.12.1.5) or emergency electrical operation (5.12.1.6);

g) an audible signal at the car and a fl ashing light under the car shall be activated during movement. The sound level of the audible warning shall be minimum 55 dB(A) below the car at 1 m distance.

GMS056 Light buzzer

GMS057 Light buzzer alarm

GIOVENZANA INTERNATIONAL B.V.www.giovenzana.com Email : giovenzana@giovenzana.com