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Micronor MR310 Series Instruction Manual

Zapfree fiber optic encoder system
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MR310/MR320 Series
Fiber Optic Encoder System
Rev: F released 9/7/2011
The design concepts and engineering details embodied in this manual, which are the property
of MICRONOR INC., are to be maintained in strict confidence; no element or detail of this
manual is to be spuriously used, nor disclosed, without the express written permission of
MICRONOR INC. All rights are reserved. No part of this publication may be reproduced,
stored in a retrieval system, or transmitted in any form or by any means, electronic,
mechanical, photocopying, recording, or otherwise, without prior written permission from
MICRONOR INC.
© COPYRIGHT 2004-2011, MICRONOR INC.
ZapFREE®
User Manual
Doc No: MR310-135
Notice of Proprietary Rights
NEWBURY PARK, CALIFORNIA
UNITED STATES OF AMERICA
MICRONOR INC.
750 Mitchell Road
Newbury Park, CA 91320 USA
PH: (805) 499 - 0114
FX: (805) 499- 6585
sales@micronor.com
www.micronor.com
For support in Europe:
MICRONOR AG.
Pumpwerkstrasse 32
CH-8105 Regensdorf
Switzerland
PH: +41-44-843-4020
FX: +41-44-843-4039
sales@micronor.ch
www.micronor.com

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  • Page 1 The design concepts and engineering details embodied in this manual, which are the property of MICRONOR INC., are to be maintained in strict confidence; no element or detail of this manual is to be spuriously used, nor disclosed, without the express written permission of MICRONOR INC.
  • Page 2 MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System Revision History Rev X1 Initial Draft Rev A First Release for use with MR310 PCB RevA and Zappy 1.1 Rev A1 First Release for use with MR310 PCB RevA and Zappy 1.2 Rev B...
  • Page 3 MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System Rev F Added new MR320 Series Page 3 of 94...

  • Page 4: Table Of Contents

    Table of Contents Product Description ....................7 Warranty Information .................... 9 Limitations of Warranty .................. 9 Contact Information..................9 Specifications ....................... 10 MR310 Series ....................10 3.1.1 MR310 Controller ................... 10 3.1.2 MR312 Semsor ..................12 3.1.3 MR314 Sensor ..................13 3.1.4...
  • Page 5 Testing The Interface Cable ..............72 Fiber Optic Connector Cleaning ..............73 7.3.1 WET Cleaning Method ................74 7.3.2 DRY Cleaning Method - Micronor MR321 DRY Cleaning Kit ....74 Troubleshooting ..................... 75 7.4.1 Verify MR310 Operation using ZAPPY Software ......75 7.4.2 Verify Visual Continuity of Fiber Optic Cable Link ........
  • Page 6 MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System List of Figures Figure 1. Shafted Encoder Face Mount via Counter-Bored Panel ......25 Figure 2. Shafted Encoder Mounting via Thru-Hole With Synchro Clamps ....26 Figure 3. Hollow Shaft Encoder Mounting Options............ 27 Figure 4.

  • Page 7: Product Description

    Encoder System. To increase optical loss margin and distance, the input and output light paths (which shared one fiber in the MR310 series) were dedicated to separate fibers with interconnections based on industry standard Duplex LC. The MR320 series is recommended for new applications.
  • Page 8 IP66 environmental seal for wash down and short immersion.  MR314/MR324 is Size 100mm hollow shaft encoder with 1024ppr resolution  MR318/MR328The single fiber MR310 series was introduced is a non-metallic Size 58mm shaft encoder (360ppr) for MRI and other applications where electromagnetic transparency is required ...

  • Page 9: Warranty Information

    MR310/MR320 Series ZapFREE® Encoder System 2. Warranty Information MICRONOR INC. warrants this product to be free from defects in material and workmanship for a period of 1 (one) year from date of shipment. During the warranty period we will, at our option, either repair or replace any product that proves to be defective.

  • Page 10: Specifications

    Description Specification DIRECT Quadrature Outputs Effective with V1.18 Firmware Only: 70 kHz max. Bandwidth (Contact Micronor concerning modifications for higher bandwidth applications.) A/A‟/B/B‟ Line Driver and Format A/B Push-Pull are Standard DIVIDER Quadrature Outputs Programmable DIVIDER range is 2-9999 Divider Range A/A‟/B/B‟...
  • Page 11 MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System Environmental Specifications: Description Specification ATEX Rating [ Ex op is 55C/T6 ] “Inherently Safe Optical Radiation” Temp Range -5° to +55°C Humidity 30% to 85% RH (non-condensing) Sealed IP40 (Non-Protected) Physical Dimensions: Description...

  • Page 12: Mr312 Semsor

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System 3.1.2 MR312 Semsor Functional Specification: Description Specification Resolution 100, 128, 256 or 360 ppr models Max Speed 8000 rpm (Mechanical Limit) Optical Interface Fixed ST Receptacle or Optical pigtail with ST-PC Plug Fiber Type MM 62.5/125m, Graded Index, 0.275NA...

  • Page 13: Mr314 Sensor

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System 3.1.3 MR314 Sensor Functional Specification: Description Specification Resolution 1024 ppr Max Speed 3000 rpm (Pulse divider function de-activated. All other functions may be active) 2750rpm (Speed is limited with all functions activated) Optical Interface...

  • Page 14: Mr316 Sensor

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System 3.1.4 MR316 Sensor Functional Specification: Description Specification Resolution 100, 128, 256 or 360 ppr models Max Speed (360ppr) 8,000 rpm Optical Interface Fixed ST Receptacle or Optical pigtail with ST-PC Plug Fiber Type MM 62.5/125m, Graded Index, 0.275NA...

  • Page 15: Mr318 Mri Compatible Sensor

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System 3.1.5 MR318 MRI Compatible Sensor Functional Specification: Description Specification Resolution 360 ppr Optical Interface Optical pigtail with ST-PC Plug, minimum length 5m (Pigtail length must be long enough so that metallic ST plug is outside of MRI environment.)

  • Page 16: Mr320 Series

    3.2.1 MR320 Controller Functional Specification: Description Specification DIRECT Quadrature Outputs 70 kHz max. Bandwidth (Contact Micronor concerning modifications for higher bandwidth applications.) A/A‟/B/B‟ Line Driver and Format A/B Push-Pull are Standard DIVIDER Quadrature Outputs Programmable DIVIDER range is 2-9999 Divider Range A/A‟/B/B‟...
  • Page 17 MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System Environmental Specifications: Description Specification ATEX Rating [ Ex op is 55C/T6 ] “Inherently Safe Optical Radiation” Temp Range -5° to +55°C Humidity 30% to 85% RH (non-condensing) Sealed IP40 (Non-Protected) Physical Dimensions: Description...

  • Page 18: Mr322 Semsor

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System 3.2.2 MR322 Semsor Functional Specification: Description Specification Resolution 100, 128, 256 or 360 ppr models Max Speed 8000 rpm (Mechanical Limit) Optical Interface Fixed ST Receptacle or Optical pigtail with ST-PC Plug Fiber Type MM 62.5/125m, Graded Index, 0.275NA...

  • Page 19: Mr324 Sensor

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System 3.2.3 MR324 Sensor Functional Specification: Description Specification Resolution 1024 ppr Max Speed 3000 rpm (Pulse divider function de-activated. All other functions may be active) 2750rpm (Speed is limited with all functions activated) Optical Interface...

  • Page 20: Mr326 Sensor

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System 3.2.4 MR326 Sensor Functional Specification: Description Specification Resolution 100, 128, 256 or 360 ppr models Max Speed (360ppr) 8,000 rpm Optical Interface Fixed ST Receptacle or Optical pigtail with ST-PC Plug Fiber Type MM 62.5/125m, Graded Index, 0.275NA...

  • Page 21: Mr328 Mri Compatible Sensor

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System 3.2.5 MR328 MRI Compatible Sensor Functional Specification: Description Specification Resolution 360 ppr Optical Interface Optical pigtail with ST-PC Plug, minimum length 5m (Pigtail length must be long enough so that metallic ST plug is outside of MRI environment.)

  • Page 22: Initial Preparation

    Account for and inspect each item before the carton is discarded. In the event of a damaged instrument, write or call MICRONOR INC. in Newbury Park, California. Please retain the shipping container in case reshipment is required for any reason.

  • Page 23: Installation Guidelines

    2. Verify that the optical link design meets optical loss budget and return loss performance requirements. The MR310 Series ZapFREE® Rotary Encoder system has a two-way loss margin of 6.5dB (MR320 loss margin is 12.5dB) to cover fiber attenuation over distance as well as losses of inline connectors and splices.

  • Page 24: Mounting The Solid Shaft Encoder Sensors

    Always wipe a connector endface clean before mating. Mounting the Solid Shaft Encoder Sensors MR310 Series: Applies to MR312, MR316, MR318 sensor MR320 Series: Applies to MR322, MR326 and MR328 sensors The mechanical workings of an encoder are straightforward. The rotor portion is coupled to a shaft, so that it will turn without slippage, and the encoder body is prevented from rotating so that it serves as a physical reference for the rotation of the rotor.

  • Page 25: Figure 1. Shafted Encoder Face Mount Via Counter-Bored Panel

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System Option #1: Face Mount to Counter-Bored Panel Consult encoder‟s reference drawing provided in Appendix A for most current mounting information, dimensions and tolerances. Figure 1 illustrates how the encoder becomes mounted to the panel via three screws (M4 for MR312 and M6 for MR316) and to the mechanism‟s shaft with a flexible coupling:...

  • Page 26: Mounting The Hollow-Shaft Rotary Encoder

    Installation is complete. Figure 2. Shafted Encoder Mounting via Thru-Hole With Synchro Clamps Mounting the Hollow-Shaft Rotary Encoder MR310 Series: Applied to MR314 Sensor MR320 Series: Applies to MR324 Sensor Like the MR312/MR316, the mechanical workings of the MR314/MR324 encoder are straightforward.
  • Page 27 MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System life is shortened. Excessive runout will cause premature bearing failure. For this reason, the minimum amount of shaft loading or misalignment should always be the goal when installing an encoder. illustrates various mounting options and hardware available for use with MR314/MR324 Figure 3 and ENI100 hollow-shaft encoders.

  • Page 28: Figure 3. Hollow Shaft Encoder Mounting Options

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System Figure 3. Hollow Shaft Encoder Mounting Options. Consult the MR314/MR324 data sheet for detailed product description, dimensions and instructions for mounting the encoder using the optional MR314A or MR314B Mounting Kit. Generically, follow these procedures for mounting the encoder: ...

  • Page 29: Mounting The Controller Module

    A set of three WAGO Quick-Connect plugs are supplied with the MR310 to facilitate connections to J1/J2/J3 (WAGO part numbers provided under Specifications). Wiring references are provided on Micronor drawing 0310 found in Appendix A. Case Shield: Connection is made through pin 12 of J1 (12-pin plug).
  • Page 30 RS232 format. The RS232 serial converter/cable requires connections to the RS485 signals on J2 plus requires the +5VDC and GND connections of pins 10 and 7. The optional Micronor MR232-1 is pre-wired adapter cable and will not require any additional power or connections.

  • Page 31: Figure 5. Mr310 And Mr320 Controllers Have Same Electrical Connections

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System Figure 5. MR310 and MR320 Controllers Have Same Electrical Connections J1 Connections J2 Connections J3 Connections Quadrature Signal Divider and RS422/485 Serial I/O plus and Power Supply Analog Outputs connection for MR232-X series Adapter Cable...

  • Page 32: Figure 6. Cross-Reference For Wago Quickcconnect Plugs Used For J1/J2/J3 Connections

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System All three Terminal Connectors are WAGO type Mini Multi Connection System with 2.5mm spacing. WAGO Connector Part Numbers for Terminal Connectors Location MICRONOR PN WAGO PN 63-733-112 733-112 63-733-110 733-110 63-733-106 733-106 Tool...

  • Page 33: Figure 8. How To Insert And Remove Wires From The Wago Plug

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System Figure 8. How To Insert and Remove Wires From the WAGO Plug Figure 9. Inserting/Removing the WAGO Plug From The MR310. Page 33 of 94...

  • Page 34: Fiber Optic Cable, Connections And Routing

    The MR310 and MR320 Controllers have the same built-in functions and electrical interfaces. The only difference is the optical interface. The MR310 series Sensors and Controller use simplex ST- UPC interfaces and connections. While the MR320 series Sensors and Controller uses Duplex LC interfaces and interconnections.

  • Page 35: First Time Start-Up

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System Before connecting the optical link between the Controller module and Sensor, the cable should be routed and installed such that:  Follow best installation practices which meet or exceed applicable industry standards such as...

  • Page 36: Manual Gain Calibration (Manual Reset)

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System PWR indicator blinks more than once, then count the number of blinks and consult the Error Table under the Troubleshooting section. Manual Gain Calibration (Manual Reset) If after operating (at a rotation of at least 50RPM), the encoder will not function properly - then a manual reset is necessary.

  • Page 37: Zappy Installation And Setup Software

    ZAPPY Installation and Setup Software NOTE: The MR310 and MR320 Controllers use the same ZAPPY™ software Micronor provides ZAPPY with the MR310 Controller Module – a user friendly setup program supplied with each encoder. ZAPPY runs on Windows XP with .net Framework installed. ZAPPY...

  • Page 38: Initial Performance Verification With Zappy

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System Figure 14. HOME Page of ZAPPY Setup Software. 5.8.1 Initial Performance Verification with ZAPPY If you are planning to use the encoder in “pure” hardware mode (that is, using the Direct Quadrature Outputs only), then using the ZAPPY software is not necessary – but highly recommended under these conditions: ...

  • Page 39: Figure 15. Encoder Table View Screen Via Zappy Software

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System With the ZAPPY software running, we need to establish communication with the MR310 as follows:  STEP 1: Select [UPLOAD TO PC] to load the current encoder parameter values from the MR310 into the Encoder Table View per Figure 15. If there is no serial communications connection, you will experience a “Communications Timeout”...
  • Page 40 MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System Next, let‟s test the encoder in actual – but manual – operation using the OPERATE and DIAGNOSTICS functions:  STEP 1: Select [OPERATE] mode and observe the initial static screen display similar to Figure 16.

  • Page 41: Figure 16. Initial Operate Screen Via Zappy Software

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System Filter settings for that analog output (see Encoder table view). For example, if the encoder is stationary (0 RPM), Current Mode=0 (bipolar output for 0-24mA with 12mA being mid- scale value of 0), Current Scale=100 (100 RPM), Current Filter set to any value, then the DAC output will be 2048 (half scale) and the actual current output will be 12 mA (0 RPM).

  • Page 42: Figure 18. Diagnostics Screen View Via Zappy Software

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System Figure 18. DIAGNOSTICS Screen view via ZAPPY Software. Figure 19. Online Instructions and Reference Information in INSTRUCTIONS Screen view. Page 42 of 94...

  • Page 43: Operation And Description Of Functions

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System Operation and Description of Functions In its most basic operating mode, the ZapFREE® Encoder/Controller Module combination simply replaces the functionality of a conventional rotary encoder with quadrature outputs – yet offers BOTH line driver and push-pull signals in a single unit (push-pull available as an option).
  • Page 44 56kHz with the divider output disabled (command 21 = 0). Auxiliary Functions can potentially be used at higher speeds with certain operational tradeoffs – simply contact the Micronor Technical Support Staff to discuss your application and needs. Summary Detail of Auxiliary Functions integrated into the MR310 controller are: ...

  • Page 45: Block Diagram

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System  RPM measurement o RPM with better then 0.5% accuracy can be polled via Serial Interface  Non Volatile Parameter storage o All parameters are securely stored in the built-in EEPROM  PC-based ZAPPY software provided for setting MR310 operating parameters via serial...

  • Page 46: Figure 20. Block Diagram Of The Zapfree® Fiber Optic Encoder System

    The divided output comes directly from the microprocessor and routed via the line driver buffer to the terminal. Output configuration may vary depending on application. Consult with MICRONOR service personnel. The microprocessor measures the Speed (RPM) by measuring the elapsed time between encoder periods.

  • Page 47: Firmware Functions And Programming

    The MR310 provides a host of auxiliary functions that the user may choose to use. To take advantage and access these functions you must have a Personal Computer available with a serial interface. MICRONOR provides the ZAPPY software that can be used to setup and test the complete ZapFREE® encoder system.
  • Page 48 MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System  Diagnostic commands for reading and setting hardware status. Configuration commands are those that are intended to be executed once either in the factory or during initial setup by the customer. Although these commands can be executed at any time, they generally affect system parameters that only need to be setup once.

  • Page 49: The Block Check Character

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System <STX>r data <ETX> <BCC> Register number of the value being returned ASCII Format and Hexadecimal. Data : Value being returned in ASCII format 6.2.3 The Block Check Character <BCC> The Blockcheck Character is used to test the transmissions for any potential errors. The <BCC> is dervived by applying a bitwise eXclusive OR (XOR) over the specified transmitted bytes.
  • Page 50 MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System Each table has the following columns: Title Description of the command function The register number needed in the command (as indicated by „rn‟ above). Read/Write Indicates whether or not the register can be read and/or written to...

  • Page 51: Configuration Commands (Registers 10-19)

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System 6.3.1 Configuration Commands (Registers 10-19) These commands are used to establish system operational configuration and calibration. In general these parameters should not be changed by the user. It is possible however to do „tricky‟...

  • Page 52: User Commands (Registers 20-2A)

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System 6.3.2 User Commands (Registers 20-2A) These commands are typical commands the user will utilize during installation or normal system operation. Title Read/ Range Default Saved Description Write Counter -16777215 – Obtains the value in the encoder counter. This is a 32-bit value.
  • Page 53 MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System 2 = For SPEED unipolar output range 4-24mA (where 4mA represents 0rpm) 3 = For POSITION bipolar output range 0-12- 24mA (where 12mA represents zero position/counter value) 4 = For POSITION unipolar 0-24mA range...

  • Page 54: Diagnostic Commands (Registers 30-39)

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System 6.3.3 Diagnostic Commands (Registers 30-39) These commands are used when servicing the MR310 either in the field or in-house. Title Setup Range Default Saved Description ADC Read Performs a read of the indicated ADC channel.
  • Page 55 MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System 9600 baud 8 data bits and 1 stop bit. Example 1: To retrieve the Model Number send the following Command via a serial interface. You must send the Starttransmission Character <EOT> and then all other information are Human Readable ASCII characters except the end of cmd <ENQ>...

  • Page 56: Detailed Description Of Each Function

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System Detailed Description of Each Function This section describes the physical outputs from the encoder monitoring circuit. 6.5.1 Counter (Register 20) Register Address: 20 This is an internal summing counter that keeps accurate track of the full number of quadrature cycles.

  • Page 57: Rpm (Register 22)

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System The divided signal is externally available on connector J3. To set the Divider to divide by 5 send: <EOT> EA <STX> 215 <ETX> <BCC> Range: User selectable. 0 and 2–16,383  A special selection is the value 0. The value 0 turns this function OFF. This may be useful when the encoder is expected to operate at high speeds and the divided output is not required.
  • Page 58 MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System SPEED Modes Description Output corresponds to actual RPM where CCW rotation is negative voltage. The voltage output range is 0V to +10V when the encoder rotates CW. Overrange extends from +10V up to +12V The voltage output range is 0V to -10V when the encoder rotates CCW.

  • Page 59: Voltage Scale (Register 24)

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System POSITION Modes Description The output ranges from 0V to +10V (overrange from +10V to +12V) for CW motion with +10V corresponding to the Voltage Scale setting (Register 24). The output ranges from 0V to -10V (overrange from -10V to - 12V) for CCW motion with -10V corresponding to the Voltage Scale setting (Register 24).

  • Page 60: Voltage Filter (Register 25)

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System function leaves processor resources for other functions such as the quadrature divider. It is recommended to disable the output when it is not required. 10-10,000 In a SPEED mode (Register 23), a Voltage Scale setting of X establishes 10V “full scale”...

  • Page 61: Current Mode (Register 26)

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System that the elapsed time between slits is large then 1ms then the low pass algorithm is changed and the time constant becomes larger as the encoder turns slower. This adaptive filtering algorithm provides for a smooth output signal change.
  • Page 62 MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System Unipolar output range of 4-20mA where 4mA represents 0RPM, regardless of direction. Page 62 of 94...
  • Page 63 MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System POSITION Description Modes Bipolar output over 0mA to 12mA to 20mA where 12mA is equal to the zero position/counter value. CW rotation from 0 counter value to Current Scale (Reg 27) setting corresponds to 12mA to 20mA. Overrange...
  • Page 64 MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System Unipolar output range of 4-24mA representing the absolute value of the Counter. 4mA represents the zero position and 20mA corresponds to the Current Scale (Reg 27) setting (regardless of direction or sign). Overrange extends over 20-24mA range.

  • Page 65: Current Scale (Register 27)

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System 6.5.8 Current Scale (Register 27) Register Address: 27 The programming for the Current Scale is as follows: <EOT> EA <STX> 27 <range data> <ETX> <BCC> Default: 1000 RPM/full range. Range Description The value 0 turns this function OFF. This may be useful when the encoder is expected to operate at high speeds and the voltage output is not required.

  • Page 66: Counter Reset (Register 29)

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System : new analog (unfiltered) value The programming for the Filter Mode is as follows: <EOT> EA <STX> 25 <filter data> <ETX> <BCC> Where data can be from 1 to 255ms Default: 32 (approx. 10Hz filter frequency) ...

  • Page 67: Counter Multiplier (Register 2A)

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System  When in Debounce mode, the signal must be at least 100ms in length to be effective. 6.5.11 Counter Multiplier (Register 2A) Register Address: 2A The internal position counter may be multiplied by two using only one half of a quadrature cycle to increment (decrement) the internal counter.

  • Page 68: Encoder Direction (Register 2B)

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System Modes Description Normal counting (every cycle is one count). This mode effectively doubles the position resolution of the internal Counter by incrementing after every half quadrature cycle. .  When in mode 1 (x2 multiplication) be sure to set the slit count to double the number of slits the encoder has.

  • Page 69: Hardware Reset Value (Register 2C)

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System 6.5.13 Hardware Reset Value (Register 2C) Register Address: 2C The internal Position Counter will be preset to this pre-programmed value whenever the Hardware Reset input goes from logic 0 to logic 1. This function sets the encoder to an absolute position based on an external reference switch, the Hardware Reset.

  • Page 70: Reset On Count/Homing (Register 2D)

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System 6.5.14 Reset On Count/Homing (Register 2D) Register Address: 2C The internal Position Counter is automatically reset to 0 whenever its absolute value matches this pre-programmed value. This is a useful command when it is desirable to use the encoder as an absolute position indicator over the course of one or multiple turns.

  • Page 71: Saving Parameters In Eeprom (Register 13)

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System 6.5.15 Saving Parameters in EEPROM (Register 13) Register Address: 13 Parameters are not automatically saved to EEPROM. The user must issue a special command to commit the parameters to EEPROM. It is highly advisable to always initiate an EEPROM commit otherwise all the stored parameters will be lost when power is removed to the MR310 unit.

  • Page 72: Maintenance And Service

    OPTICAL POWER by clicking on [GET AMPLIFIER GAIN]. o If the power reading is lower then -36.5dBm (e.g. -37dBm, -38dBm, etc.), then contact Micronor Technical Support as the MR310 unit must be sent in for service or repair. Page 72 of 94...

  • Page 73: Serial Interface

    Serial Interface If communications cannot be established with a PC, proceed as follows:  STEP 1: Use the ZAPPY Software from Micronor and check if you can communicate using this software.  STEP 2: Make sure you use a correct interface cable. The MR310 interface is RS422/RS485 signal based.

  • Page 74: Fiber Optic Connector Cleaning

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System Bits Per Second (9600), Data Bits (8), Parity (None), Stop bits (1) and Flow Control (None).  STEP 3: If the above is successful, then we know that the computer does send out and receive back signals properly through the cable.

  • Page 75: Wet Cleaning Method

    When the DRY Method does not completely remove all contaminants, then use the WET Method. Micronor offers the MR321 (for ST) and MR321C (for Duplex LC) Fiber Optic Cleaning Kits as a simple and portable DRY cleaning solution for optical plugs and receptacles. One Cleaning Kit is supplied with each shipped lot of encoders and modules.

  • Page 76: Troubleshooting

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System Figure 24. How To Use the MR321 Kit For Cleaning ST Optical Connectors and Interfaces. Figure 25. How To Use the MR321C Kit For Cleaning Duplex LC Optical Connectors and Interfaces. Always visually inspect (with a fiber optic microscope) the optical plug or port (inside connector) after cleaning.

  • Page 77: Verify Visual Continuity Of Fiber Optic Cable Link

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System  STEP 1: In [OPERATE] mode, note the RPM reading while continuously rotating the encoder shaft. Also verify that pulse count for one complete revolution reflects the encoder resolution.  STEP 2: In [DIAGNOSTICS] mode and with the shaft rotating at 100+ RPM (also minimum rate for CALIBRATION mode), CH-A and CH-B should both read 2.1V or higher (see VOLTAGE...

  • Page 78: Verify Optical Output Power Of Mr310 Module

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System 7.4.3 Verify Optical Output Power of MR310 Module Equipment Required: Fiber Optic Power Meter with ST Adapter, calibrated at 850nm and 1300nm  STEP 1: Using a known good optical cable, connect the MR310 output to the input of an Optical Power Meter (OPM) as shown in Figure 27.

  • Page 79: Built-In System Analysis Of Complete Fiber Optic Encoder System And Link

    Section 5.6 details the performance requirements of the optical cable link should you decide to procure cables from sources other than Micronor. Make sure that the cable assembly house or LAN installer aware of these requirements and be sure that he can produce assemblies of acceptable IL and RL performance.

  • Page 80: Figure 28. System Analysis Screens In Zappy™ Diagnostics Mode

    MICRONOR INC. MR310/MR320 Series ZapFREE® Encoder System Analyzer Screen when encoder system passed the test. Note that the green bars are beyond the limit lines both for low signal and high signals. Analyzer Screen when the fiber link exhibits high reflectivity.

  • Page 81: Blinking Error Codes

    Will blink off for about 150ms each time a CALIBRATION cycle occurs. An error condition is signified by the PWR LED blinking 1-5 times in a cycle repeated every 3.3 seconds. Note the number of blinks and contact Micronor for technical support. The PWR LED blinking error codes are: ...

  • Page 82: Reference Drawings

    Micronor MR322: Optical Encoder Reference Drawing, Rev A Micronor MR324: Optical Encoder Reference Drawing, Rev A Micronor MR326: Optical Encoder Reference Drawing, Rev A Micronor MR328: Optical Encoder Reference Drawing, Rev A Micronor MR320-D06CXX: Duplex LC Fiber Optic Cable Assembly Drawing, Rev X1 Page 82 of 94...
  • Page 83 THE INFORMATION CONTAINED IN THIS MATERIAL SIZE DWG. NO. DRAWING IS THE SOLE PROPERTY OF MR310 MICRONOR CORPORATION. ANY NOTES: UNLESS OTHERWISE SPECIFIED FINISH REPRODUCTION IN PART OR AS A WHOLE WITHOUT THE WRITTEN PERMISSION OF MICRONOR CORPORATION IS SCALE:...
  • Page 88 COMMENTS: THE INFORMATION CONTAINED IN THIS MATERIAL SIZE DWG. NO. DRAWING IS THE SOLE PROPERTY OF MICRONOR CORPORATION. ANY MR320-M06LXXX NOTES: UNLESS OTHERWISE SPECIFIED FINISH REPRODUCTION IN PART OR AS A WHOLE WITHOUT THE WRITTEN PERMISSION OF MICRONOR CORPORATION IS...

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