Weber PL 814 User manual

© Weber Lifttechnik GmbH 15.12.16 IP
PL 814 / PL814A
Safety Device
Operating Manual
STATUS 12-2016

Operating Manual PL 814
Weber Lifttechnik GmbH
Page 2
© Weber Lifttechnik GmbH
© Copyright 2016 by
WEBER Lifttechnik GmbH, Fallersleber Straße. 12, D-38154 Königslutter
Warranty
This description has been created by WEBER Lifttechnik GmbH according to the best of their knowledge. All
technical data has been carefully determined and checked and complies with the respective current status.
Subject to changes and errors.
Our verbal and written application advice is intended to support your own work. This concerns non-binding
information –also with regard to any third party rights –and does not release you from having to conduct your
own practice-orientated inspection of the products regarding their suitability for the intended processes and
purposes.
Product descriptions do not include statements regarding liability for any damages. Nevertheless, should liability
come into question, then this shall be limited for all damages to the value of the delivered and used goods.
Subject to technical changes.
We are grateful at all times for information regarding errors, or suggestions and criticism!
Weber Lifttechnik GmbH
Fallersleber Str. 12
D-38154 Königslutter
Germany
Tel.: [phone] / 91 72 - 0
Fax: [phone] / 91 72 - 22
Internet: www.weber-lifttechnik.de
Email: [email protected]
Hotline
Monday to Thursday 08:00 hours –17:00 hours
Friday 08:00 hours –16:00 hours
+49 (0) 53 53 / 91 72 30
+49 (0) 53 53 / 91 72 31
Any kind of duplication, including excerpts, is only permissible with the written approval of WEBER Lifttechnik
GmbH.

Weber Lifttechnik GmbH
Operating Manual PL 814
© Weber Lifttechnik GmbH
Page 3
List of contents
1. Safety information..........................................................................................................................................4
2. Installation and connection information.........................................................................................................5
3. Function description.......................................................................................................................................5
3.1. Safety device PL814 version 1 for general applications..................................................................5
3.2. Safety device version 1 with partial equipping.................................................................................6
3.3. Safety device PL814 version 2 for approach and re-adjustment with open doors...........................7
4. Function test..................................................................................................................................................8
5. Measures against unintentional movement of the lift car UCM.....................................................................8
6. Circuit diagram of the circuit board................................................................................................................9
6.1. Safety device PL814 version 1 for general applications..................................................................9
6.2. Safety device version 1, partially equipped circuit board PL814A...................................................10
6.3. Safety device PL814 version 2 for approach and readjustment with open doors............................11
7. Circuit diagram of the control unit..................................................................................................................12
7.1. Safety circuit.....................................................................................................................................12
7.2. Digital floor selection........................................................................................................................13
Appendix:
EU-type examination certificate
Annex 1 to EU-type examination certificate
EU-declaration of conformity

Operating Manual PL 814
Weber Lifttechnik GmbH
Page 4
© Weber Lifttechnik GmbH
1. Safety information
Important preliminary remarks and safety information regarding the control
units by Weber Lifttechnik GmbH
The following information regarding equipping of our control units mainly contains generally
valid statements. This safety information makes no claim regarding completeness. Please find
special instructions regarding the handling and adjustment of the respective control unit type in
the manuals included in delivery.
The devices and machines used in or controlled by our control units are equipment for use in
high-voltage systems. This equipment features hazardous live, moving and rotating parts
during operation. In case of incorrect handling of the device or insufficient maintenance,
severe damage to health or material damage may be caused.
Persons responsible for the safety of the system must therefore ensure the following:
Only qualified personnel may be commissioned with work on the devices
and machines. Operating instructions and product documentation must
be available at all times during work on the system and be consistently
observed.
Working on the devices and machines or within close proximity to them
is prohibited to non-qualified personnel.
All accident prevention regulations and any further deviating or
supplementary regulations for special areas of application and regional
special regulations must be observed.
All installations and adjustments of the electrical devices supplied by us
are to be executed by an electrician or under their instruction and
supervision.
During this process, the generally valid regulations, guidelines and laws
are to be observed, in particular also the EN and VDE (German
Association of Electrical Engineers) regulations.
Installation or replacement of the devices may only be executed after
switching off the power supply.

Weber Lifttechnik GmbH
Operating Manual PL 814
© Weber Lifttechnik GmbH
Page 5
2. Installation and connection information
Figure 1: Printed circuit board PL 814
The printed circuit board PL 814 or PL814A is intended for installation in a control cabinet
and is snapped on to a support rail on the assembly panel. It is to be protected against
soiling, humidity and mechanical damage.
The supply voltage is 24V DC. It is to be protected against overvoltage.
Connections to the safety device are made at the terminal block C. 230V AC may be
applied at these terminals. The trip current of the back-up fuse may total maximum 2A.
3. Function description
3.1. Safety device PL814 version 1 for general applications
See circuit diagram “6.1. Safety device PL814 version 1”
The safety device can be used for all applications for which a safety device is required, e.g. in
case of reduced protective space or retardation monitoring circuits for shortened buffer stroke.
It has a two-channel design and essentially comprises of three safety relays -K74, -K75 and -
K76 with positively-driven contacts. The two redundant input signals with a signal voltage of
+24V DC are connected to the input terminals A1 (channel 1) and A6 (channel 2).

Operating Manual PL 814
Weber Lifttechnik GmbH
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© Weber Lifttechnik GmbH
After applying an operating voltage of +24V DC to terminal A5, the relay –K74 energises. Only
if –K74 is energised, can the safety relays –K75 and –K76 energise and be set to self-locking
as soon as the related input signal is applied. Only when both safety relays –K75 and –K76
are energised is the self-locking of relay -K74 released and the relay switched off. -K74 must
be de-energised and –K75 and –K76 energised in order that the safety contact zone between
the terminals C1 and C2 can be closed.
By applying the operating voltage +24V DC or a non-safety relevant input signal, the relay –
K60 can energise and therefore enable the contact zone between the terminals C1 and C2.
As soon as the incident to be monitored is obsolete, i.e. both input signals are switched off, the
two safety relays–K75 and –K76 are de-energised, and subsequently–K74 can be re-
energised.
Fault diagnosis:
1. Should one of the two input signals be missing or one of the two safety relays –K75 and
–K76 does not energise, the safety contact between the terminals C1 and C2 remains
open.
2. If one of the two input signals is not switched off or one of the two safety relays –K75
and –K76 does not de-energise, then –K74 will not energise. As a result, the safety
relays of the other channel cannot re-energise and the safety contact zone between
terminal C1 and C2 remains open.
3. If the safety relay –K74 does not de-energise, the safety contact zone between the
terminals C1 and C2 remains open.
4. If the safety relay –K74 does not energise, then also the two safety relays –K75 and –
K76 cannot energise and the safety contact zone between the terminals C1 and C2
remains open.
3.2. Safety device version 1 with partial equipping
A partially equipped circuit board can also be used for version 1 applications. For this purpose,
the same circuit board is used. The partially equipped circuit board receives the designation
PL814A.
See circuit diagram “6.2. Safety device version 1, partially equipped circuit board PL814A”

Weber Lifttechnik GmbH
Operating Manual PL 814
© Weber Lifttechnik GmbH
Page 7
3.3. Safety device PL814 version 2 for approach and re-adjustment with open doors
See circuit diagram: “6.3. Safety device PL814 version 2”
See circuit diagram: “7.2. Shaft copying”
See function description of the safety device: “3.1. Safety device version 1”
If approach or readjustment should be possible with open doors, the completely equipped
circuit board PL814 bridges the door switch and the switch for the locking mechanism in the lift
control units by Weber Lifttechnik GmbH.
The relay –K73 (connection terminal A2) is activated via a control unit output as soon as the
control unit and the absolute encoder for the shaft copying system are ready for operation. It
remains energised as long as operational readiness remains. A contact for this relay prevents
the safety relay of the second channel –K76 being activated, as long as the control unit and
therefore the input signal for the first channel –K75 are not ready for operation. The second
contact is available potential-free, for example, in order to activate the UCM-monitoring circuit
board PL751A only after achieving readiness for operation.
A further control unit output supplies an enable signal for the relay -K60, if the following
conditions are fulfilled:
a. The approach or readjustment procedure should be executed.
b. The travel speed has the permitted values (slow, under 0.3 m/s) as in EN81, for
approach and readjustment procedures.
In case of hydraulic lifts or unregulated traction elevators without impulse generators for
position recording, a speed measurement is not possible. The enable then occurs after
switching to slow speed.
If the conditions for the relay –K60 are fulfilled, on reaching the door zone configured on the
control unit the safety relay -K75 (channel 1) is activated via the control unit output “Readjust
(door zone)”. –K75 remains energised, as long as the lift car is positioned within the door zone.
This door zone signal is provided by a transducer, e.g. absolute encoder or magnetic or
electronic adjustment switches which are connected to the control computer.
The second safety relay -K76 (channel 2) is activated directly via a switch in the door zone,
e.g. magnetic switch. It energises as soon as the door zone switched is actuated and the
abovementioned enable relays -K60 and –K73 are energised. It then remains switched on until
the lift leaves the door zone again.
As soon as the two relays -K75 and -K76 are energised, -K74 is de-energised. As a result, the
shunt circuit of the door switch and the switch of the locking mechanism between the
connection terminals C1 and C2 are closed and the door may open.
As soon as the lift leaves the door zone, the two relays -K75 and -K76 de-energise and -K74
can energise. Should -K74 not energise, then the two relays -K75 and -K76 remain de-
energised on approaching the target stop, and therefore the bridging of the door switch and
the switch for the locking mechanism are opened.

Operating Manual PL 814
Weber Lifttechnik GmbH
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© Weber Lifttechnik GmbH
4. Function test
With each stop procedure, the safety device of the PL814 is tested by means of the lift control
unit. As soon as the lift is flush-aligned and a door switch or switch for the locking mechanism
opens, the relay K60 is activated and as a result the shunt circuit enabled. If the contact zone
between the terminals C1 and C2 is not closed because a contact on the safety relay is not
closed, then the lift is shut down and does not accept any further commands. In case of
hydraulic lifts, the lift car, if possible, is travelled to the lowest stopping position and shut down
there.
A test is not executed in case of an activated inspection run device or releveling control unit.
5. Measures against unintentional movement of the lift car UCM
If the lift car leaves the door zone with open doors, then the safety relays -K75 and -K76 are
switched off and therefore the shunt circuit of the door switch or the switch for the locking
mechanism is interrupted.
The typical release time of a safety relay according to the data sheet is 5ms, with a suppressor
diode as a protective circuit, up to 25ms.
Recognition of unintentional movement of the lift car with open doors away from the stopping
position and the power failure-safe storage of this fault can be executed using the circuit board
PL751A, for example, which is type-tested according to EN81-1 9.11.3, EN81-2 9.13.3 or
EN81-20 5.6.7.3 and 5.6.7.9.

Weber Lifttechnik GmbH
Operating Manual PL 814
© Weber Lifttechnik GmbH
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6. Circuit diagram of the circuit board
6.1. Safety device PL814 version 1 for general applications

Operating Manual PL 814
Weber Lifttechnik GmbH
Page 10
© Weber Lifttechnik GmbH
6.2. Safety device version 1, partially equipped circuit board PL814A

Weber Lifttechnik GmbH
Operating Manual PL 814
© Weber Lifttechnik GmbH
Page 11
6.3. Safety device PL814 version 2 for approach and readjustment with open doors

Operating Manual PL 814
Weber Lifttechnik GmbH
Page 12
© Weber Lifttechnik GmbH
7. Circuit diagram of the control unit
7.1. Safety circuit

Weber Lifttechnik GmbH
Operating Manual PL 814
© Weber Lifttechnik GmbH
Page 13
7.2. Digital floor selection