Variotech NSE User manual

Manual and Data Sheet NSE Version 1.0
Variotech – Emergency p ower supply unit NSE Version 1.0 Date:10.01.14,Page1of7
Manual NSE Version 1.0
Emergency power supply unit NSE for
UCM A3 safety control and the
A3 brake element (coil)
Index:
General:............................................................................................................................. 2
Safety guidelines: .............................................................................................................. 2
Training of the installation and operation personnel: .......................................................... 3
Warranty and liability management: ................................................................................... 3
Intended use:..................................................................................................................... 3
Commercial data: .................................................................................................................. 3
Product details: ..................................................................................................................... 3
Function:............................................................................................................................ 3
Product description: ........................................................................................................... 4
Layout and connections: .................................................................................................... 4
Technical Details: .............................................................................................................. 4
Environmental conditions:.................................................................................................. 5
Conditions of use: .............................................................................................................. 5
Assembly / Mounting:......................................................................................................... 5
Connections and terminals description:.............................................................................. 5
Signal transmitter:.............................................................................................................. 5
Getting started:...................................................................................................................... 6
Troubleshooting:.................................................................................................................... 6
Maintenance:......................................................................................................................... 6
Disposal and Recycling: ........................................................................................................ 7
Included in delivery:............................................................................................................... 7
Ordering information and spare parts: ................................................................................... 7
All rights to this manual are owned by the company Variotech GmbH.
Copies for internal purposes may be made.

Manual and Data Sheet NSE Version 1.0
Variotech – Emergency p ower supply unit NSE Version 1.0 Date:10.01.14,Page2of7
In preparing this manual we have used the utmost care, but we cannot guarantee the accuracy of
this manual, because mistakes cannot be avoided 100%.
The contents of this manual can be changed anytime without notice. For improving information we
will be grateful.
This safety control is designed exclusively for use in a lift control system as power supply for an A3-
brake element and may be used only as specified in this manual.
This description contains the information necessary for the intended use of the power supply unit NSE.
Knowledge about the safety of the operating field 'Lift' is assumed.
These skills are fundamental for the understanding of this description.
General:
The power supply unit NSE is destined for use as power supply of an A3 safety control and the A3
brake element.
It guarantees an uninterrupted supply of power for the control unit ENA3 and the 24V trigger coil of the
actuator (A3 brake element). This prevents an unwanted triggering of the actuator caused by a power
failure.
The NSE consists of a pre-wired and pre-assembled ENA3 controller, a 24V power supply and battery
backup (NSE).
The power supply NSE requires an input voltage of 13.6 V DC, galvanically isolated from the mains
power supply.
The power supply NSE generates the charging voltage for a 12V battery and an uninterruptible
buffered voltage of 24VDC for the A3 safety control as well as for the A3 brake element (coil).
Legend :
Particularly important information in the manual are identified as follows:
DANGER! + WARNING!
This notice must be strictly observed. The sign warns of imminent danger, which can
cause serious injury and death.
ATTENTION!
This note indicates attention to a hazard and informs of appropriate precautions to
prevent minor injuries and property damages.
IMPORTANT! - INFO!
This note presents situations that can lead to damage of equipment or facilities, and
provides tips for proper application and also provides information on key passages and
other special features.
Safety guidelines:
The safety instructions are an important part of the operating manual. In consequence of
non-compliance of the instructions, all warranty claims and warranties, as well as
potential liability claims are lost. Moreover all regulations on accident prevention for lifts
must be observed. All local rules must be taken into account to prevent damage due to
improper handling with voltages and currents. Especially concerning protection measure
and correct earthing.

Manual and Data Sheet NSE Version 1.0
Variotech – Emergency p ower supply unit NSE Version 1.0 Date:10.01.14,Page3of7
Training of the installation and operation personnel:
The operator may only use people for installation and commissioning, which have
the basic rules of accident prevention and safety knowledge and have read and
understood the safety instructions in this manual.
Warranty and liability management:
Warranty and liability claims will be lost if the control is not used as intended or if
any damage due to non-observance of the operating instructions or if the
installation and operating personnel have not been trained properly.
Intended use:
The application of ENA3 safety controls are provided solely lift systems.
The control may not be used in of other systems or particular in industrial plants.
The safety control ENA3 may only be used for the case defined in EN81 Annex 3,
to prevent of an unintendend movement of the car from a standstill.
Commercial data:
Name: Emergency Power Supply Unit NSE
Packaging Unit: 1 Piece
Customer Tariff: 85044081
Weight / Piece 5N
Product details:
Function:
1. NSE provides an uninterrupted supply of power for the control unit ENA3 and the
trigger coil (24VDC) of the actuator (A3 brake element) for about 10 seconds after a
power failure.
2. After these 10 seconds, the NSE switches off the supply voltage for the ENA3 and
the coil in order not to discharge the backup battery.
3. An emergency rescue button on the box can be pushed to activate the battery again
for additional 15 minutes which supplies the ENA3 and the coil.
During this time, it is possible to make an emergency rescue drive of the lift.
4. This can be repeated multiple times for another 15 minutes, if required.

Manual and Data Sheet NSE Version 1.0
Variotech – Emergency p ower supply unit NSE Version 1.0 Date:10.01.14,Page4of7
Product description:
•CompactandreliablepowersupplyunitforA3safety elements with power supply 24VDC.
•Built-inlogicforthefunctionofanuninterruptible power supply.
•Built-inlogicforsafeshutdownoftheA3brakeelement if an A3 error occurs.
•Connectionforexternalemergencyreleasebuttonwith built-in logic and
output terminals to reset the A3 safety circuit.
•Clampconnectionfora12Vbattery(toload).
•Built-inmonitoringofcharginganddeepdischargeprotection of the battery.
•RelaycontactoutputformessageifbatteryisOKor defective.
•Built-inlogicforswitchingbetweenbatterycharging and supply
•Built-infunctiontocreateabuffervoltageof24VDC from the 12V battery.
This only requires a single 12V battery.
•Reversepolarityprotectionandautomaticresetfuse at the battery clamp.
•AutomaticloweringofthesupplyvoltageoftheA3brake element after tightening of the
anchor. This causes a reduction of the heating of the coil of the A3 brake element and an
improvement of the overall life and reliability of the A3 device.
•Inputformonitoringthemainsvoltage
•Signaltransducer(beeper/buzzer)forsignallingof faults acoustically.
This makes it easier for the technician to find an error.
Layout and connections:
Technical Details:
Connection: with plug-in terminals, encoded with different numbers,
Terminals: max. conductor cross section of 1 mm²with sleeve, or 1.5 mm²without sleeve.
Cable length: There are no prescribed limits. Shielded cables are not necessary.
Operating ambient temperature: + 5°C to + 40°C
Humidity (no condensation) < 95 %
Storage temperature: – 25°C to + 70°C
Dimensions: 10cm x 12cm x height 5cm
Weight: 500g

Manual and Data Sheet NSE Version 1.0
Variotech – Emergency p ower supply unit NSE Version 1.0 Date:10.01.14,Page5of7
Environmental conditions:
The NSE is designed so that it pollutes the environment as little as possible. It emits no pollutants and
does not contain environmentally harmful substances and consumes very little power.
Conditions of use:
The NSE power supply must be used only under the following conditions:
a.) The brake element of the protective device must be type-approved.
b.) Appropriate self-monitoring of the correct functioning of the braking device must be provided.
The power supply unit NSE cannot execute this function.
Assembly / Mounting:
Installation of security control should preferably be close to the elevator control. If more space is
available in the control box, a free DIN rail with of about 10cm length is required. If there is no space
available, it is possible to mount the unit nearby to the control box.
In that case the NSE can be delivered in a special industrial plastic housing.
The unit must be installed in a housing with a protection factor of at least IP4x.
Connections and terminals description:
Terminal 1 (+V), 2 (-V): Connection of a suitable external power supply with an input voltage of 230V
and an adjustable output voltage from 12VDC + / -20% min 3A. The output voltage must be set to 13.6
volts before commissioning (suitable power supply would be Meanwell MDR-40-12).
Terminal 3: Connection for the potential-free output contact (relay) "power ok" of the power supply.
Terminals 4, 5: Connection for a safety relay contact of the A3 safety control, which opens in case of
an A3 error. This input is used to turn off the supply voltage of the A3 brake element if an A3 error
occurs.
Terminals 6(-V), 7 (+V): Connection of the power supply 24V DC 0,3A of the A3 safety control.
Terminal 8: Reset button output for connection to the reset button input of A3 safety control.
Terminal 9: Output "feedback of the A3 brake element" to connect to the A3-safety control.
This output indicates the function of the A3 brake element. The switch position is dependent on the
switch on the A3 brake element.
Terminals 10 (+V), 11 (-V): Connection of an external 12V battery. The battery can have a capacity
ranging from 1.2 Ah to 7.5 Ah
Terminals 12, 13: Output (potential-free relay contact, normally closed) for reporting a battery failure.
Terminals 14, 15: Connection for an external switch for the initiation of the emergency rescue and as
well as for the reset of the A3 safety control.
Terminals 16, 17: Connection for an external LED which indicates if the coil is active.
Terminals 18 (-V), 19 (+V): Output voltage 24VDC for the A3 brake element.
Terminals 20, 21: Connection for the switch (feedback control) on the A3 brake element.
Signal transmitter:
The power supply NSE has a built-in electric signal transmitter (beeper / buzzer) which generates an
acoustic signal to indicate an error and easier fault location in case of error.

Manual and Data Sheet NSE Version 1.0
Variotech – Emergency p ower supply unit NSE Version 1.0 Date:10.01.14,Page6of7
Getting started:
This description for the commissioning relates only to the power supply NSE and not to the
type-tested A3 safety control as well as not to the mechanical A3 brake element.
•Inspectionofthecorrectmechanicalfixationofthe NSE
•Inspectionofallconnectionsandterminalsaccording to schematics and documentation
•Checkthecorrectconnectionvoltageofterminals1 and 2 (13.6 VDC)
•Inputofterminal3(Powerok)mustbecheckedagainst plus (+) of the power supply, which must
be 13,4 VDC if correct power is supplied.
•Theinputtoterminals4and5mustbeopenincase of A3 error (as well as in the test mode) and
closed in normal operation.
Note: The A3 brake element (coil) can be supplied only when the terminals 4 and 5 have the same
potential, which is only then when they are connected via a relay contact in the A3 safety control.
•Checkthecorrectconnectionvoltageattheterminals 6 and 7.
It must be 24VDC (+ / -1V). The voltage is used to supply the ENA3 safety control.
•Outputterminal8,ResetfunctionforA3safetycontrol
•Terminal9,outputtoforwardthefeedbackcontactof A3 safety control.
•Checkthecorrectoutputvoltageof13.6VDCatthe terminals 10 and 11
•Theoutputatterminals12and13(batterymonitoring) can be tested with a continuity tester. If the
battery is OK, the two terminals have the same potential.
•Checkthecorrectconnectionoftheemergencyrescue button to terminals 14 and 15 with a
continuity tester
•Terminal16and17,Connectionoftheindicationof the coil status.
If the coil is active, the voltage must be about 12V.
•Checkthecorrectconnectionvoltageattheterminals 18 and 19.
It must be about 24VDC. The voltage is used to supply the A3 brake element (coil with anchor).
After the coil release the anchor a reduced voltage of about 12V can be measured.
The position of the released anchor is detected by analysis of the feedback switch.
•Atterminals20and21connectsthefeedbackswitch of the A3 brake element.
Troubleshooting :
•Similarlyasdescribedinthe"GettingStarted"section, all connections must be controlled.
•Afrequentcauseoferrorisadefectivebattery,this should therefore be checked first. You can
check the function of the battery by turning off the power supply during an idle state of the lift and
then checking whether the coil of the A3 brake element continues to be supplied and whether
battery voltage remains stable over 12V.
Maintenance:
There are no direct services or maintenance measures necessary.
The power supply unit NSE must always be kept clean and dry.
The battery should be replaced periodically in accordance with the data sheet of the manufacturer.
It must be ensured that the power supply NSE is replaced after an operating period of 20 years
because the specified product life cycle of the power supply unit NSE has been reached or exceeded.

Manual and Data Sheet NSE Version 1.0
Variotech – Emergency p ower supply unit NSE Version 1.0 Date:10.01.14,Page7of7
Disposal and Recycling:
Unusable or irreparable devices and devices which have exceeded their lifecycle have to be disposed
in accordance to the applicable waste disposal regulations for electronic waste. The plastic housing
can be disposed as residual waste.
Included in delivery:
The package includes the NSE emergency power supply and the operating manual.
The NSE power supply is also available together with the A3-safety control ENA3 or REA3.
Optional: pre-wiring is possible.
A suitable power supply (Meanwell MDR-40-12) can also be offered.
The NSE power supply is supplied in a plastic housing for DIN rail mounting and should be site
installed in a control box.
On request, the unit can also be supplied already mounted in an industrial plastic housing (IP65).
The complete system ENA3-NSE-BOX consists of a pre-wired and pre-assembled ENA3 controller,
NSE emergency power supply, a 12V power supply (Meanwell MDR-40-12), a battery 12v; 1,2Ah.
The complete unit will be installed and delivered in an industrial plastic housing (IP65).
Ordering information and spare parts:
Title Description Order Number other
Complete System ENA3-NSE:
Fully wired unit with power
supply and battery as well as
A3-safety control already
tested built in housing IP65
ENA3 + NSE +
Powersupply + Battery +
industrial housing IP65
Pre-wired and assambled
ENA3-NSE-BOX
Emergency power supply unit
NSE
Built into a plastic housing
for DIN rail mounting
NSE
-
HS
Power supply 230V DIN rail power supply
NSE
-
MDR
-
4012
Battery 12V, 1,2Ah
BAT12V1,2A
Matching industrial IP65
housing
Plastic housing with
transparent cover
275x225x120
NSYTBS
292412
T