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Connecting Differential Incremental Encoders

You can connect differential incremental encoders to the NI 9361.

NI 9361 Getting Started Guide

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© National Instruments

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Summary of Contents for 9361

Page 1: ...GETTING STARTED GUIDE NI 9361 8 Counter DI 0 V to 5 V Differential 0 V to 24 V Single Ended 32 Bit 102 4 kHz ...

Page 2: ... Refer to the documentation for each component in the system to determine the safety and EMC ratings for the entire system Safety Guidelines Operate the NI 9361 only as described in this document Caution Do not operate the NI 9361 in a manner not specified in this document Product misuse can result in a hazard You can compromise the safety protection built into the product if the product is damage...

Page 3: ... ground up to 3000 m Continuous 60 VDC Measurement Category I Withstand 1 000 Vrms verified by a 5 s dielectric withstand test Vsup inputs to earth ground up to 3000 m Continuous 60 VDC Measurement Category I Withstand 1 000 Vrms verified by a 5 s dielectric withstand test NI 9361 Getting Started Guide National Instruments 3 ...

Page 4: ...ory I is for measurements performed on circuits not directly connected to the electrical distribution system referred to as MAINS voltage MAINS is a hazardous live electrical supply system that powers equipment This category is for measurements of voltages from specially protected secondary circuits Such voltage measurements include signal levels special equipment limited energy parts of equipment...

Page 5: ...Hazardous Locations The NI 9361 is suitable for use in Class I Division 2 Groups A B C D T4 hazardous locations Class I Zone 2 AEx nA IIC T4 and Ex nA IIC T4 hazardous locations and nonhazardous locations only Follow these guidelines if you are installing the NI 9361 in a potentially explosive environment Not following these guidelines may result in serious injury or death Caution Do not disconnec...

Page 6: ...ally The NI 9361 has been evaluated as Ex nA IIC T4 Gc equipment under DEMKO Certificate No 12 ATEX 1202658X and is IECEx UL 14 0089X certified Each NI 9361 is marked II 3G and is suitable for use in Zone 2 hazardous locations in ambient temperatures of 40 C Ta 70 C If you are using the NI 9361 in Gas Group IIC hazardous locations you must use the device in an NI chassis that has been evaluated as...

Page 7: ...Guidelines This product was tested and complies with the regulatory requirements and limits for electromagnetic compatibility EMC stated in the product specifications These requirements and limits provide reasonable protection against harmful interference when the product is operated in the intended operational electromagnetic environment This product is intended for use in industrial locations Ho...

Page 8: ...ate it under your local regulatory rules Caution To ensure the specified EMC performance operate this product only with shielded cables and accessories Caution To ensure the specified EMC performance the length of all I O cables must be no longer than 30 m 100 ft Special Conditions for Marine Applications Some products are Lloyd s Register LR Type Approved for marine shipboard applications To veri...

Page 9: ...asurement probes and cables to ensure that the desired EMC performance is attained Preparing the Environment Ensure that the environment in which you are using the NI 9361 meets the following specifications Operating temperature IEC 60068 2 1 IEC 60068 2 2 40 C to 70 C Operating humidity IEC 60068 2 78 10 RH to 90 RH noncondensing Pollution Degree 2 Maximum altitude 5 000 m Indoor use only NI 9361...

Page 10: ... device datasheet on ni com manuals for complete specifications Connecting the NI 9361 The NI 9361 provides connections for eight digital input channels for the embedded counters 10 ni com NI 9361 Getting Started Guide ...

Page 11: ... COM DI5 COM COM DI4 COM COM DI3 Vout DI2 Vout Vout DI6 DI7 Vout DI0 Vsup DI1 Vout Vout DI5 Vout DI4 NC Vout NC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 NI 9361 Getting Started Guide National Instruments 11 ...

Page 12: ...t signal connection for singled ended measurements and positive digital input signal connection for differential measurements DI Negative digital input signal connection for differential measurements NC No connection Vout Voltage supply output connection Vsup Voltage supply input connection 12 ni com NI 9361 Getting Started Guide ...

Page 13: ...ct to the module Install a 2 A maximum fast acting fuse between the external power supply and the Vsup terminal Note Refer to the NI 9361 Datasheet on ni com manuals for more information about the Vsup pins Caution Do not remove or install modules if the connected external power supply is powered on NI 9361 Getting Started Guide National Instruments 13 ...

Page 14: ...nal Device Connecting Single Ended Devices You can connect single ended devices such as TTL or CMOS to the NI 9361 For single ended connections connect the device out to the DI terminal on the NI 9361 Do not connect the DI terminal on the NI 9361 for single ended connections 14 ni com NI 9361 Getting Started Guide ...

Page 15: ...n GND Single Ended Device External Power Supply NI 9361 OUT DI0 COM DI0 Connecting Single Ended Devices with Open Collector Outputs You can connect a device with open collector or open drain outputs to the NI 9361 NI 9361 Getting Started Guide National Instruments 15 ...

Page 16: ...lector Device External Power Supply NI 9361 OUT DI0 COM DI0 5 V An open collector device does not actively drive the signal high and relies on an external pull up The NI 9361 provides a 5 V pull up on each DI pin that can be enabled individually to pull the signal high 16 ni com NI 9361 Getting Started Guide ...

Page 17: ...t differential devices to the NI 9361 For differential connections connect the positive device out to the DI terminal on the NI 9361 and the negative device out to the DI terminal on the NI 9361 NI 9361 Getting Started Guide National Instruments 17 ...

Page 18: ...NI 9361 DI0 DI0 COM The NI 9361 measures the difference between the DI and DI terminals to determine if that difference is greater or less than the digital logic levels If the difference between the terminals is within the input high range the channel registers as high If the 18 ni com NI 9361 Getting Started Guide ...

Page 19: ...th the number of pulses and the relative phase of channels A and B you can track both the position and direction of rotation Some encoders have a third channel channel Z which is also referred to as the index channel A high level on channel Z causes the counter to be reloaded with a specific value in a specific phase of a cycle Connecting Single Ended Incremental Encoders You can connect single en...

Page 20: ... Connecting a Single Ended Incremental Encoder 2 A Max Vsup COM Vout Vin GND Single Ended Encoder External Power Supply NI 9361 A B Index DI0 DI0 DI4 DI4 DI7 DI7 COM COM 20 ni com NI 9361 Getting Started Guide ...

Page 21: ...Connecting Differential Incremental Encoders You can connect differential incremental encoders to the NI 9361 NI 9361 Getting Started Guide National Instruments 21 ...

Page 22: ...ting a Differential Incremental Encoder 2 A Max Vsup COM Vout Vin GND Differential Encoder External Power Supply NI 9361 A A A A B B Index Index DI0 DI0 DI4 DI4 DI7 DI7 COM COM 22 ni com NI 9361 Getting Started Guide ...

Page 23: ...CompactRIO NI CompactDAQ RELATED INFORMATION NI 9361 Datasheet NI RIO Help LabVIEW FPGA Help NI 9361 Datasheet NI DAQmx Help LabVIEW Help C Series Documentation Resources ni com info cseriesdoc Services ni com services NI 9361 Getting Started Guide National Instruments 23 ...

Page 24: ...r NI product Product registration facilitates technical support and ensures that you receive important information updates from NI A Declaration of Conformity DoC is our claim of compliance with the Council of the European Communities using the manufacturer s declaration of conformity This system affords the user protection for electromagnetic compatibility EMC and product safety You can obtain th...

Page 25: ...ates create your service request at ni com support or dial 1 866 ASK MYNI 275 6964 For telephone support outside the United States visit the Worldwide Offices section of ni com niglobal to access the branch office websites which provide up to date contact information support phone numbers email addresses and current events NI 9361 Getting Started Guide National Instruments 25 ...

Page 26: ...party legal notices in the readme file for your NI product Refer to the Export Compliance Information at ni com legal export compliance for the NI global trade compliance policy and how to obtain relevant HTS codes ECCNs and other import export data NI MAKES NO EXPRESS OR IMPLIED WARRANTIES AS TO THE ACCURACY OF THE INFORMATION CONTAINED HEREIN AND SHALL NOT BE LIABLE FOR ANY ERRORS U S Government...

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