ENERGY HARVESTING WIRELESS SWITCH

S

Actuation

S

N

NN

SS

N

Intelligent energy converter: The inductive generator converts mechanical energy into an electrical energy pulse by continuously changing the direction of the magnetic field.

Energy Harvesting with the self-powered functional switch: It converts the incoming mechanical energy from operating the switch into electrical energy which sends pulses to a radio receiver via radio electronics.

Actuation Mechanics

InputForceStrokeHaptics

OutputRF Protocol

(Power, Duration)

Energy Management RF Electronics Antenna

SystemEnergy

Conversion (Generator)

2

Breaking new ground means using intelligent techno l-ogies: Energy Harvesting makes use of energy which is already available. Rather than requiring energy to be generated by an external supply or an integrated source, Cherry’s Energy Harvesting products convert energy that is already available to the system.

Energy Harvesting with an inductive generatorCherry’s Energy Harvesting switch module works on an inductive basis. The inductive pulse gene rator converts the mechanical operating force of the operator into an electrical energy pulse. When the pulse generator is

operated, the magnetic flow is reversed in a coil system, creating electrical energy. This energy is converted in the energy management system into a constant supply voltage stretched out over time. This powers the radio electronics with transmitting antenna to send a radio signal. The great advantages this provides: Due to its miniature construction, the high degree of efficacy in the functional chain and the long service life of up to 1,000,000 switching cycles, the Cherry wireless module only needs a small amount of power for operation with no maintenance required – and can be installed in a tight space.

In a world with an increasing number of networks, the requirements of infor-

mation transmission are also changing: It needs to be mobile and flexible –

using as little energy as possible. The answer is Energy Harvesting wireless

switches made by Cherry. They are easy and effective to use, without any

cables or batteries.

ENERGY HARVESTING WIRELESS SWITCH

3

Best connections – for industry and building technologyVarious radio standards can be used for transmission: from ZF proprietary to ZigBee Greenpower, right up to customer-specific requirements. An excellent option for integration into building automation is provided by the worldwide bus standard KNX. This has been devel-oped in recent years, starting from a purely cabled approach, then to wireless technology, to fully integrated wireless technology with central configuration using the software tool ETS. It is now being expanded with the new wireless switch module which integrates the Energy Harvesting aspect: Operating the switch module generates enough electrical energy to send a complete KNX-RF protocol directly to a KNX receiver of your choice. A gateway is not required. The scope of the transmitter reaches up to 30 meters in buildings (868.3 MHz band).

One advantage after anotherThis environmentally friendly system has numerous advantages:

You have the flexibility to install a switch in any location you want without cabling, where it fulfills its function over the entire length of its service life without any main-tenance at all – including battery changes.

In contrast to information transmission via cables, the self-powered wireless switch is attractive for building services, as it is also easy to retrofit. For example, you can install new light switches in a freshly decorated room without having to cut any holes in the wall.

There are also numerous possibilities for use in indus-trial automation, and particularly if the time it takes to lay cables is disproportionate to the application.

Energy Harvesting wireless switch 2 / 3

Standard transmitter – components 4

Standard transmitter – wireless switch with housing 5

Standard receiver 6

Transmitter / KNX for building automation 7

4

STANDARD TRANSMITTER – COMPONENTS

Dimensions in mm

Generators – Features � Inductive generator: The required RF-energy is created by the

mechanical actuation of the switch � Miniature design combined with extremely high energy output � Long mechanical life � Momentary design: Switching mechanism returns to starting

position after release � Maintained design: Switching mechanism with two rest positions

(e.g. On–Off)

Generator with PCB – Features � Energy Harvesting system with no wires, consisting of generator

and transmission electronics � Wireless data transfer via RF technology

– saves on plug connections – easy to install in virtually inaccessible areas – no complex wire assembly

� Several available frequency bands allow use worldwide in a range of applications

� Maintenance-free – no batteries that need to be replaced � Flexible “Pairing” allows the operation of several receivers with

one switch (and vice versa) � “Unique ID” excludes a mutual interference between different

RF-switches

Technical DataSeries Generator – momentary Generator – maintained Generator with PCB

Dimensions 20.1 x 7.3 x 14.3 mm 20.1 x 7.3 x 19.3 mm 21.7 x 7.3 x 23.3 mm

Energy generated 2x min. 0.33 mWs 1x min. 0.33 mWs –

Lifetime up to 1,000,000 operations min. 100,000 operations up to 1,000,000 operations

Operating force approx. 13 N 5–16 N (depending on the lever length) –

Temperature range -40 to +85 °C (-40 to +185 °F) -40 to +85 °C (-40 to +185 °F) -40 to +85 °C (-40 to +185 °F)

Frequency bands – – 868.3 MHz or 915.0 MHz

Generator maintained Generator with PCB

9.2 ±

0.15

7.6 ±

0.11.4

± 0.2

0.8 ±

0.06

6.4 ±

0.2

5.8 ± 0.15

6.5 ±

0.1

4.25 ± 0.2

0.7 ± 0.07 10.5 ± 0.15 0.65 ± 0.1

5.95 ±

0.1

max.16.8

2.65 ± 0.15

(0.5)

(1)

(4.6)

7.3 ± 0.11.1 ± 0.5

0.2

Designation

(0.5)

Operating point 12.25

Final position min. 9.9Operating point 11 ± 1

Reset point 12.3 ± 1.2 Rest position max. 15.2

Pin 1 Anfang W1 Pin 2 Ende W1

Pin 4 Ende W2 Pin 3 Anfang W2

F

Momentary generator

Generator momentary

0.55 ± 0.05Operating direction 1

(0.5)

Mea

surin

g lev

el 15

.95

7.6 ±

0.21.4

± 0.2

0.8 ±

0.06

12.6

± 0.1

9.2 ±

0.15

F 1 Operating direction 2

Rest position 1 = 1.26 ± 0.3Operating point 1 = 2.2 ± 0.3Final position 1 max. 3.2Operating direction 1Rest position 2 = 2.76 ± 0.3Operating point 2 = 1.81 ± 0.3Final position 2 min. 0.61Operating direction 2

F 2

1.1 ± 0.50.2

20.1 ± 0.50.3

Maintained generator

4

5

Energy Harvesting wireless snap switch Energy harvesting wireless rocker switch

Dimensions in mm

Features � Energy Harvesting, wireless system � Miniature design combined with extremely high energy output � Wireless data transfer via RF technology

– saves on plug connections – easy to install in virtually inaccessible areas – no complex wire assembly

� Energy Harvester without a battery: The required RF-energy is created by the mechanical actuation of the switch

� Several available frequency bands allow use worldwide in a range of applications

� Maintenance-free – no batteries that need to be replaced

� Long mechanical life � Flexible “Pairing” allows the operation of several receivers with

one switch (and vice versa) � “Unique ID” excludes a mutual interference between different

RF-switches � Compatible radio receiver available � Protocols are sent multiple times and delayed to assure

a robust data transmission � Proprietary ZF RF-protocol � Snap switch also available with auxiliary actuator options

Technical DataSeries Energy Harvesting wireless switch Energy Harvesting wireless switch

Design Snap switch, momentary Rocker switch, momentary

Temperature range -20 to +60 °C (-4 to +140 °F) -20 to +60 °C (-4 to +140 °F)

Lifetime min. 100,000 operations min. 100,000 operations

Frequency bands 868.3 MHz or 915.0 MHz 868.3 MHz or 915.0 MHz

RF distance (open area) up to 300 m up to 300 m

RF distance (in buildings) up to 30 m up to 30 m

Operating force max. 15 N max. 8 N

Operating speed 0.05–0.25 m/s 0.05–0.25 m/s

Housing protection class IP40 IP40

5.8 ± 0.2

27 ±

0.213

.5 ± 0

.15

7.75 ± 0.2

2.1 ± 0.2

7.1 ± 0.211.5 ± 0.112.5 ± 0.1

4 ± 0.

1

Ø 3.2

R 5.5

Rest position: max. 23.5Reset point: 22.1 ± 1.4

Operating point: 20.8 ± 0.9Final position: min. 19.8

4 ± 0.2

9.8 ± 0.226.8 ± 0.236.7 ± 0.2

Snap switch Rocker switch

27 ± 0.2

25 ±

0.22 ±

0.1

9.5 ± 0.2

11.85 ± 0.15

15 ± 0.2

32 ±

0.2

STANDARD TRANSMITTER – WIRELESS SWITCH WITH HOUSING

5

Dimensions in mm

Receiver with housing – Features � Standard receiver module for Energy Harvesting wireless switches � Various output options � Suitable for wall installation � Designed for frequency bands in Europe (868.3 MHz) or

North America (915.0 MHz). � Flexible “Pairing” allows the operation of several receivers with

one switch (and vice versa) � “Unique ID” excludes a mutual interference between different

RF-switches � Compatible wireless switch (switch, rocker switch) available � Repeater function possible for greater distances � Proprietary ZF radio protocol

Receiver only – Features � PCB as stand-alone product for Energy Harvesting wireless

switches � Designed for frequency bands in Europe (868.3 MHz) or

North America (915.0 MHz). � Flexible “Pairing” allows the operation of several receivers with

one switch (and vice versa) � “Unique ID” excludes a mutual interference between different

RF-switches � Compatible wireless switches (snap switch, rocker switch) available � Reflow can be soldered � Can be used as stand-alone or pure communication module � Repeater function possible for greater distances � Proprietary ZF radio protocol

Technical DataSeries Receiver module Receiver PCB

Temperature range -40 to +85 °C (-40 to +185 °F) -40 to +85 °C (-40 to +185 °F)

Receiver sensitivity typ. -98 dBm typ. -98 dBm

Receiver class Class 2 Class 2

Supply voltage 5 V DC stabilized or 7 V to 24 V DC unstable, 5 V USB

5 V or 3.3 V DC

Output interfaces Low voltage relay 48 V or 230 V; TTL, RS232 or RS485 Bus; Digital output (high/low) or SPI; USB 2.0

1x UART 4x GPIO

Frequency bands 868.3 MHz or 915.0 MHz 868.3 MHz or 915.0 MHz

Antennae Wire antenna with plastic sleeve 50 Ohm output

Wire antenna 50 Ohm output

6

Receiver module for self-powered wireless switch Receiver PCB

STANDARD RECEIVER

Rear view

504.5 (2x) 4

65.4

H H

C

140.4

D

A

A

Cross section view A-A Front view

Ø 10 (2x)Ø 1.3 ± 0.2

Ø 0.8

71.

366

x 2.

54

26 ± 0.1

15.241.9

22 ±

0.120

.52.

71

1.6 4.5

5 x

2.54

2.35 x 45°

Bottom viewChem NiAu /

ENIG NiAu (13x)

Ø 1.3 ± 0.2

max

. 3.5

max

. 3.5

~ 85

.6

20.6 x 20.6

Rear view

504.5 (2x) 4

65.4

H H

C

140.4

D

A

A

Cross section view A-A Front view

Ø 10 (2x)

Rear view

504.5 (2x) 4

65.4

H H

C

140.4

D

A

A

Cross section view A-A Front view

Ø 10 (2x)

Receiver only

Receiver with housing

6

7.22 ± 0.1

5°

1.7

0.8 ±

0.05

Ø 2.5 ± 0.03

40 ± 0.136.4 ± 0.133.4 ± 0.1

25 ±

0.133

.4 ±

0.140

± 0.1

Designation

Contact surfaces

11.2

± 0.2

33.4 ± 0.15

8 ± 0

.13.

2 ± 0

.1

20.2

± 0.2

25 ±

0.134

.5 ±

0.2Ac

tuat

ion

surf

aces

15.8

6 ± 0

.137

.2 ±

0.15 1.

47 ±

0.05

15.8

6 ± 0

.1

1.47

± 0.0

5

Switch module – Features � Self-powered, wireless switch module for building automation (e.g.

for controlling lights or blinds) � Can be universally adapted for customer-specific design parts � Available as 1-way button or 2-way button (also serial button) � Several available frequency bands allow use worldwide � Several radio standards can be implemented (KNX-RF, EnOcean,

ZigBee, ZF-proprietary …) � Low operating force and low operating noise � Maintenance-free – no batteries that need to be replaced � Easy to install, even in virtually inaccessible places � Protocol-dependent pairing � Optional adapter for power supply during configuration

Standard receiver KNXCompatible with all KNX-RF receivers which are commercially available as standard

Pairing adapter Allows bi-directional communication during configuration

Technical DataSeries 1 / 2-way switch module KNX 1 / 2-way switch module

Frequency bands 868.3 MHz, 915 MHz, 2.4 GHz 868.3 MHz

Temperature range -20 to +45 °C (-4 to +113 °F) -20 to +45 °C (-4 to +113 °F)

Lifetime (generator) min. 100,000 operations min. 100,000 operations

RF distance (in buildings) up to 30 m up to 30 m

Operating force 6 –12 N (can be designed for different versions)

>10 N

Radiated output power depends on radio standard up to 3 dBm

Transmission time wireless protocol

depends on radio standard approx. 19 ms

7

1-way switch module 2-way switch module Pairing adapter

TRANSMITTER / KNX FOR BUILDING AUTOMATION

7.22 ± 0.1

11.2

± 0.2

15.86

± 0.1 33.4 ± 0.15

2.2 ± 0.05 Pairing LED

37.2

± 0.15

1.47 ±

0.05

15.86

± 0.1

2.6 ±

0.1

17 ±

0.234

.5 ± 0

.2

40 ± 0.1

25 ±

0.133

.4 ± 0

.140

± 0.1

Designation

36.4 ± 0.133.4 ± 0.1

1.47 ±

0.05

+ 3 V DC

0.8 ±

0.05

Ø 2.5 ± 0.03

Ø 2 ± 0.0512 ± 0.0820 ± 0.08

Actuation surfaces

GNDContact surfaces

1.7

5°

Dimensions in mm

2-way module1-way module

7

801604; 45628274; EN; 05/2015; 3; FLI © 2015 ZF Friedrichshafen AG

ZF Friedrichshafen AGCherrystraße 91275 Auerbach Germany Phone: +49 96 43 18-0 Fax: +49 96 43 18 17 20

ZF Electronic Systems Pleasant Prairie LLC11200 88th Avenue Pleasant Prairie, Wisconsin USA 53158 Phone: +1 262 942 6500 Fax: +1 262 942 6566

ZF Electronics Asia Limited2 / F Technology Plaza 29–35 Sha Tsui Road Tsuen Wan, New Territories Hong Kong Phone: +852 25 65 66 78 Fax: +852 25 65 68 27

ZF Electronics TVS (India) Private LimitedMadurai – Melur Road, Vellaripatti, Madurai – 625 122 India Phone: +91 452 24 202 08 Fax: +91 452 24 203 82

www.cherryswitches.com

Subject to errors, technical changes, and delivery feasibility. Technical information only refers to the product specification. It does not warrant any specific properties. Binding information can only be found in drawings in association with product specifications.