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USER MANUAL 

 

 

 

STM 431J – Scavenger Transmitter Module  

 

 

© 2017 EnOcean  |  www.enocean.com 

  STM 431J User Manual  | v2.0 | Nov 2017 |  Page 31/ 34 

3.8

 

Mounting STM 431J into a housing 

The figure below shows an example of a housing into which the module can be mounted 

(with antenna pointing to the left).  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

To avoid damage to the solar cell or the PCB itself, please make sure not to exert 

shear force (side force within the plane of the solar cell) onto the solar cell!  

The maximum vertical force onto the solar cell must not exceed 4 N and should be 

homogeneously distributed!  

Bending of the PCB must be avoided! 

 

 

 

Please make sure that the housing covers 0.5 mm at the solar cell edges.  

Within 0.5 mm off the edge flaking is possible due to the cutting process.  

Summary of Contents for STM 431J

Page 1: ...ser Manual v2 0 Nov 2017 Page 1 34 STM 431J Scavenger Transmitter Module Patent protected WO98 36395 DE 100 25 561 DE 101 50 128 WO 2004 051591 DE 103 01 678 A1 DE 10309334 WO 04 109236 WO 05 096482 W...

Page 2: ...is assumed for possible omissions or inaccuracies Circuitry and specifications are subject to change without notice For the latest product specifications refer to the EnOcean web site http www enocea...

Page 3: ...18 2 8 1 EEP Configuration 18 2 8 2 GP Configuration 19 2 8 3 Security Configuration 19 2 9 Radio telegram 21 2 9 1 Normal operation standard and enhanced security mode 21 2 9 2 Teach in telegram stan...

Page 4: ...ancy button is pressed In case of no relevant input change a redundant retransmission signal is sent after a user configurable number of wake ups to announce all current values In addition to the cycl...

Page 5: ...e description 3 Dolphin V4 API http www enocean com en enocean software 4 AN509Explanation of EnOcean security in applications http www enocean com en application notes 5 AN510Adding Security to EnOce...

Page 6: ...ensor Measurement range 0 40 C resolution 0 16 K Accuracy typ 0 5 K between 17 C and 27 C typ 1 K between 0 C and 40 C EnOcean Equipment Profiles configurable EEPs A5 02 05 default A5 10 05 A5 10 03 a...

Page 7: ...USER MANUAL STM 431J Scavenger Transmitter Module 2017 EnOcean www enocean com STM 431J User Manual v2 0 Nov 2017 Page 7 34 PCB drawing STM 431 J...

Page 8: ...torage temperature 20 C 60 C recommended2 10 C 30 C 60 r h Shelf life in absolute darkness 36 months after delivery3 Humidity 0 93 r h non condensing 2 Recommended for maximum life of energy storage c...

Page 9: ...User Manual v2 0 Nov 2017 Page 9 34 1 6 Ordering Information Type Ordering Code STM 431J S3061 D431 The module shall not be placed on conductive materials to prevent discharge of the internal energy s...

Page 10: ...SER MANUAL STM 431J Scavenger Transmitter Module 2017 EnOcean www enocean com STM 431J User Manual v2 0 Nov 2017 Page 10 34 2 FUNCTIONAL DESCRIPTION 2 1 Simplified firmware flow chart and block diagra...

Page 11: ...core to simplify usage of the DOLPHIN API Energy Store LRN LED 1 SET GND CW_1 CW_0 OCC CP_1 CP_0 LRN VDD Whip antenna UVDDext RESET BALUN Presence Signal every 100th every 10th every cyclic wake up or...

Page 12: ...tput current max 5 mA Supply for external circuitry available while not in deep sleep mode SWPWR is switched on 0 25 ms before sampling of inputs and is switched off afterwards UVDDext UVDD of Dolphin...

Page 13: ...C pin Programming I F SCLKDIO1 SCL EEPROM pin SCL I2C pin Programming I F WSDADIO2 Programming I F RSDADIO3 Programming I F WAKE0 OCC Wake input Input for external occupancy button Change of logic sta...

Page 14: ...0 SCLKDIO1 WSDADIO2 RSDADIO3 This may lead to unpredictable malfunction of the device For I O pins configured as analog pins the IOVDD voltage level is not relevant See also 2 3 2 2 3 2 Analog and dig...

Page 15: ...ge 0 40 C Accuracy 17 27 C 0 40 0 5 1 K K 2 3 4 Programming Interface The positions of the pads needed for programming are shown in the layout below Number Symbol 1 VDD 2 GND 3 PROG_EN 4 RESET 5 SCSED...

Page 16: ...VCHAR 4 V 4 V VCHAR 6 V Limited internally 45 mA GND Ground connection 0 0 V VINA Voltage at every analog input pin 0 2 0 V VIND Voltage at RESET WAKE0 1 and every digital input 0 3 6 V 2 6 Power mana...

Page 17: ...Transmitter Module 2017 EnOcean www enocean com STM 431J User Manual v2 0 Nov 2017 Page 17 34 2 7 Configuration 2 7 1 Configuration via pins depreciated Please consider that Configuration via PINs is...

Page 18: ...arameters of STM 431J are initialized in production The module specific pa rameters key PSK and RLC are also initialised during production to a random value If the module is used with standard Firmwar...

Page 19: ...e Change Defines if switch between standard and enhanced secu rity mode with long press of LRN button is allowed or not Default Enabled External EEPROM Present Default is set to yes If set to no then...

Page 20: ...USER MANUAL STM 431J Scavenger Transmitter Module 2017 EnOcean www enocean com STM 431J User Manual v2 0 Nov 2017 Page 20 34...

Page 21: ...ternal oc cupancy button and set point control by the method described in 2 8 A5 02 05 Temperature sensor 0 40 C default A5 10 03 Temperature sensor 0 40 C set point control A5 10 05 Temperature senso...

Page 22: ...In normal application scenario only very few are required The factory delivery mode of the STM 431J is standard not encrypted This mode is com mon mode originally available Secure mode was added in la...

Page 23: ...formation is either send plain text as is or it is protected by the pre shared key PSK The PSK must be in printed on the transmitting device To use PSK teach in the PSK must be read by the end user an...

Page 24: ...ing to the status of the internal threshold detector For details please refer to the Dolphin V4 Core Description documentation The WXIDIO pin is used to disconnect the energy storage element at voltag...

Page 25: ...ll 540 13 5 10 10 16 21 storage too small 175 4 4 10 100 20 16 8 storage too small 140 3 5 100 1 43 7 8 260 65 1 6 100 10 98 3 6 120 30 0 8 100 100 112 3 100 25 0 6 Below is with secure mode enabled W...

Page 26: ...etween WAKE0 and UVDDext WAKE1 provides an internal 1 8 M pull up See figure below When the LRN button is pressed WAKE1 is pulled to GND and a teach in telegram is trans mitted As long as the button i...

Page 27: ...occupancy button In order to control the set point an external potentiometer has to be connected as shown below In addition this figure shows how to connect the occupancy button 3 4 Combination with...

Page 28: ...nsor circuit absolute maximum is 5 mA The EEPROM current is typ 0 1 mA for 5 ms during write operation For details please refer to the User Manual of the EEPROM 7 24AA08 3 6 1 Included Information ID...

Page 29: ...com STM 431J User Manual v2 0 Nov 2017 Page 29 34 3 7 Antenna layout 3 7 1 Whip antenna STM 430J Specification of the whip antenna L 64 mm Antenna layout recommendation STM 430J without host PCB STM 4...

Page 30: ...odule 2017 EnOcean www enocean com STM 431J User Manual v2 0 Nov 2017 Page 30 34 3 7 2 Helical antenna STM 431J Antenna recommendation STM 431J without host PCB STM 431J with host PCB Host PCB GND pla...

Page 31: ...ing to the left To avoid damage to the solar cell or the PCB itself please make sure not to exert shear force side force within the plane of the solar cell onto the solar cell The maximum vertical for...

Page 32: ...od Typically 30 m range through max 5 walls Ferroconcrete walls ceilings Typically 10 m range through max 1 ceiling Fire safety walls elevator shafts staircases and supply areas should be considered a...

Page 33: ...STM 431J User Manual v2 0 Nov 2017 Page 33 34 4 AGENCY CERTIFICATIONS STM 431J complies with the Japanese radio law and is certified according to ARIB STD T108 When the product is placed on the Japan...

Page 34: ...nOcean www enocean com STM 431J User Manual v2 0 Nov 2017 Page 34 34 5 Label Information 1 Product name STM 431J STM 435J 2 Step Code xy 3 Date Code KW YY e g 15 13 4 Status D431 z e g 1 5 DMC 6 ARIB...

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