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Motrona IX 342 Operating Instructions Manual

Ssi indicator with two relay outputs and serial interface, for use with single-turn or multi-turn ssi encoders
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control
– motion – interface
SSI Indicator with Two Relay Outputs
and Serial Interface, for Use with
Single-Turn or Multi-Turn SSI Encoders
Clear LED display (15 mm / 0.59'' size) with adjustable brightness
Master- or Slave operation with clock rates up to 1 MHz
Suitable for all SSI formats up to 25 bits
Two presets and relay outputs
Serial RS232 / RS485 interface
Numerous supplementary functions like Linearization, Bit Blanking etc.
IX34208a_e.doc / Aug-09
IX 342
Operating Instructions
motrona GmbH
Zwischen den Wegen 32
78239 Rielasingen - Germany
Tel. +49 (0)7731-9332-0
Fax +49 (0)7731-9332-30
info@motrona.com
www.motrona.com
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Summary of Contents for Motrona IX 342

  • Page 1 Fax +49 (0)7731-9332-30 control – motion – interface info@motrona.com www.motrona.com IX 342 SSI Indicator with Two Relay Outputs and Serial Interface, for Use with Single-Turn or Multi-Turn SSI Encoders Clear LED display (15 mm / 0.59’’ size) with adjustable brightness...
  • Page 2 Safety Instructions This manual is an essential part of the unit and contains important hints about function, correct handling and commissioning. Non-observance can result in damage to the unit or the machine or even in injury to persons using the equipment! The unit must only be installed, connected and activated by a qualified electrician It is a must to observe all general and also all country-specific and application-...

  • Page 3: Table Of Contents

    Table of Contents Terminal Assignment ..................... 4 1.1. Power Supply..........................5 1.2. Aux. Voltage Output ........................5 1.3. Control Inputs A, B and Reset ( C )....................5 1.4. Relay Outputs ..........................6 1.5. Serial RS232 / RS485 interface ....................6 How to Operate the Front Keys..................7 2.1.

  • Page 4: Terminal Assignment

    1. Terminal Assignment Terminal Assignment and Connection Example 1 2 3 4 1 2 3 Rel. 2 C NO NC 1 2 3 4 5 6 7 8 9 10 1 2 3 Rel. 1 C NO NC Rel. 2 Rel.

  • Page 5: Power Supply

    1.1. Power Supply The unit accepts DC supply from 17 to 30 VDC which must be applied to terminals 1 and 2. The current consumption depends on the level of the supply voltage and is typically 130mA at 30V or 190mA at 17V, plus currents taken from aux. output). 1.2.

  • Page 6: Relay Outputs

    1.4. Relay Outputs The unit provides two presets with relay outputs (dry change-over), each with a switching capability of 250 VAC / 1A / 250 VA or 100 VDC / 1A / 100 W respectively. The response time of the relays is approx. 10 msec. In case of switching inductive loads it is advisable to use external filtering of the coils.

  • Page 7: How To Operate The Front Keys

    2. How to Operate the Front Keys For setup and other operations the unit uses three front keys which subsequently will be denominated as follows: ENTER (Input) (Setting) (Command) The functions of the keys are depending on the actual operating state of the unit. The following three operating states apply: Normal display state Setup state...

  • Page 8: Selection And Setting Of Parameters

    2.2. Selection and Setting of Parameters 2.2.1. How to select a parameter The E E NTER key will scroll through the menu. The S S ET key allows to select the corresponding item and to change the setting or the numeric value. After this, the selection can be stored by ENTER again, which automatically changes over to the next menu item.

  • Page 9: Teach Operation

    2.3. Teach operation The Time-out function will be switched off during all Teach operations Function ENTER will conclude or abort any Teach operation in progress SET function is fully similar to normal set-up operation Cmd will store the display value to the register and will change over to the next interpolation point.

  • Page 10: The Operator Menu

    3. The Operator Menu The menu provides one section with “Basic Parameters” and another section with “Operational Parameters”. On the display you will only find those parameters which have been enabled by the basic settings. E.g. when the Linearisation Functions have been disabled in the basic set- up, the associated linearization parameters will also not appear in the parameter menu.

  • Page 11: Overview Of Operational Parameters

    3.2. Overview of Operational Parameters Presets: Preselection 1 Preselection 2 M-Factor Display and Scaling: D-Factor P-Factor Decimal point Display Hi_Bit (MSB) Lo_Bit (LSB) Direction Error Error_Polarity Round loop Time Reset Zero Position Ser_Timer Serial Interface: Ser_Mode Ser_Val P01_X *) Linearization: P01_Y*) P16_X *) P16_Y *)

  • Page 12: Setup Procedure

    4. Setup Procedure For better understanding the following sections 4.1 and 4.2 explain settings for the display only. Settings for Preselections and Serial Link will be explained separately, later. 4.1. Basic Parameters The subsequent settings are of unique nature and must only be made upon the very first setup. The basic setup selects the desired operation mode of the unit, the input characteristics PNP/NPN and the desired brightness of the LED display.
  • Page 13 Menu Setting Range Default Code Locking Interlock of keypad access (see 2.5) no: Keypad accessible at any time All: Keypad interlock for all functions P-Free: Keypad interlock except for Preselection Settings Pres 1 und Pres 2 Linearization Mode For details please see 6.1 und 6.2. no: Linearization is switched OFF *) 1-qua: Linearization settings for the positive range only (negative values will appear as a mirror).

  • Page 14: Operational Parameters

    4.2. Operational Parameters Menu Setting Range Default M-Factor *): -9.999 … 9.999 1 1 .000 Multiplying factor for the SSI value (after consideration of possible bit blanking) 0.001 … 9.999 1 1 .000 D-Factor *): Dividing factor for the SSI value (after consideration of possible bit blanking) -199999 P-Factor *):...
  • Page 15 Menu Setting Range Default Direction riGht riGht LEFt Parameter to negate the SSI value, resulting in reversal of the direction of the encoder count. riGht: ascending values with forward motion LEFt:: decreasing values with forward motion 0 ... 25 Error Defines the location of the Error Bit 0: no Error Bit available 01 - 25: Location of the Error Bit...
  • Page 16 Menu Setting Range Default Reset A Reset command is available to store the actual SSI position to register „Zero Position“. As a result, the display value will become zero at the actual encoder position, and all further operation will refer to this new datum point.

  • Page 17: Parameters For Preselections And Relay Outputs

    4.3. Parameters for Preselections and Relay Outputs The following additional settings for the Preselections appear in the Basic Menu: Menu Default Switching Characteristics of Relay 1 Greater/Equal. Relay to switch statically ON when Display Value Preselection1 Lower/Equal. Relay to switch statically ON when Display Value Preselection1 Greater/Equal.
  • Page 18 The following Operational Parameters provide setting of the switching thresholds: Menu Setting Range Default -199999.. 10000 Preselection 1: 999999 -199999.. 5000 Preselection 2: 999999 The direction of the Hysteresis effect depends on the setting of the switching characteristics. With the settings „GE“ or „LE“ the following switch points will result: Display Value Preselection Hysteresis...

  • Page 19: Parameters For Setup Of The Serial Interface

    4.4. Parameters for Setup of the Serial Interface The following additional settings for serial communications appear in the Basic Menu: Menu Setting Range Default 0..99 1 1 1 Unit Number You can assign any unit number between 11 and 99. The address must however not contain a “0“...
  • Page 20 The following Operational Parameters provide configuration of the serial interface: Menu Setting Range Default Serial Timer: 0,000 0,100 sec Setting 0,000 allows manual activation of a serial data 0,010 sec transmission at any time. All other settings specify the cycle …...
  • Page 21 4.4.1. PC-Mode Communication with PC - Mode allows free readout of all parameters and registers of the unit. The subsequent example shows the details of communication for serial readout of the actual display value. The general string to initiate a request has the following format: EOT = Control Character (Hex 04) AD1 = Unit Address, High Byte...
  • Page 22 4.4.2. Printer Mode The Printer Mode allows cyclic or manual activation of transmissions of the specified register data. The corresponding register can be specified by means of parameter „S-Code“. Another parameter named „S-mod“ allows selection between two different string types: „S-mod“...

  • Page 23: Hints For Application

    5. Hints for Application 5.1. Master and Slave Operation Set register “Mode” to position “Master” when the unit should generate the clock signal for the encoder. In this case the clock terminals (CLK) are configured as clock outputs. SSI Encoder Screen SSI Indicator 7 (+24V out)

  • Page 24: Evaluation Of Encoder Bits

    With Master operation, therefore other settings will result in generation of the next upper or lower value according to above list. With all settings <250.0 kHz the error between set rate and generated rate becomes negligible. It is mandatory to set the Baud rate also with Slave operation. In this case, however, the setting serves only to determine the pause time for correct synchronization (pause is detected after 4 clock cycles).

  • Page 25: Scaling Of The Display

    Bit Blanking: If now, for example, from these 16 valid bits only the bits 3 to 12 should be used for further evaluation, the corresponding setting would be „Hi bit“ = „17“ and „Lo bit“ = „08“. Requested 20 19 18 17 16 15 14 13 12 11 10 9 8 5 4 3 2 1 Bits (Clocks)

  • Page 26: Basic Modes Of Operation

    5.4. Basic Modes of Operation 5.4.1. Normal SSI display Normal operation provides calculation of the display value from the SSI encoder data and the settings of the scaling factors. Negative values can be achieved by corresponding setting of the zero-position, or by inversion of the direction bit. To set the unit up without problem, it is best to use the following sequence of steps: Set all basic registers according to the encoder type you use, as shown in section 4.1.
  • Page 27 8192 7168 Original encoder signal Encoder 13Bit Direction = 0 0-Position = 1024 Display 1024 degrees 0-PoS = 1024 Course of display with positive counting direction 8192 Original encoder signal Encoder 13Bit Direction = 1 0-Position = 1024 1024 degrees 0-PoS = 1024 Display -7168...
  • Page 28 5.4.2. Round-Loop Function This mode of operation is used frequently with rotating round tables or similar applications, where the absolute encoder information is only used for a limited and repeating range of the encoder (like one revolution of the table, which must not at the same time mean one revolution of the encoder shaft).
  • Page 29 5.4.3. Operation with Zero-Crossing As a special advantage, the round-loop mode can be used to bypass the mechanical encoder overflow position, because in this mode the unit continues with steady operation, even while the SSI encoder signal passes the mechanical overflow position from maximum to zero. This feature can help to avoid mechanical adjusting of the encoder zero position with many applications, when no other means for the mechanical zero definition is available.

  • Page 30: Testing Functions

    5.5. Testing Functions The test menu can be accessed while doing the basic set up, as shown in section 4.1. Most of these tests are for factory use only, but the following tests may also be helpful for the user: Menu Selection Text...

  • Page 31: Special Functions

    6. Special Functions 6.1. Linearization This function allows converting a non-linear input signal into a linear presentation or vice- versa. There are 16 interpolation points available, which can be freely arranged over the whole measuring range in any distance. Between two points the unit automatically will interpolate straight lines.
  • Page 32 Application Example: The picture below shows a Watergate where the opening is picked up by means of an SSI encoder. We would like to display the clearance of the gate "d", but the existing encoder information is proportional to the opening angle . Display value (1-cos ) d = d...

  • Page 33: Manual Input Or „Teaching" Of The Interpolation Points

    6.2. Manual Input or „Teaching“ of the Interpolation Points Interpolation points to form the linearization curve can be entered one after another, using the same procedure as for all other numeric parameters. This means you will enter all parameters P01_x to P16_x and P01_y to P16_y manually by keypad. During manual input of interpolation points the unit will not examine the settings P01_x to P16_x.
  • Page 34 Once we have reached and stored the last interpolation points P16_x/y, the routine will restart with P01_x again. You are free to double-check your settings once more or to make corrections. To conclude the Teach procedure, keep ENTER down for about 2 seconds. In the display you will read “StOP”...

  • Page 35: Technical Appendix

    7. Technical Appendix 7.1. Dimensions 110,0 (4.331’’) 91,0 (3.583) 96,0 (3.780’’) 9,0 (.345) 129,0 (5.079) 140,5 (5.531) Panel cut out: 91 x 44 mm (3.583 x 1.732’’) IX34208a_e.doc / Aug-09 Page 35 / 40...

  • Page 36: Technical Specifications

    7.2. Technical Specifications Supply voltage DC : 24 V (17 – 30 V) Consumption (without sensor) : 17 V: 190 mA, 24 V: 150 mA, 30 V: 120 mA Aux. output for encoder : 24 VDC, +/- 15%, 120 mA (with AC and DC supply) Control Inputs : 3 (PNP/NPN/Namur), A / B = unused, C = Reset Input currents...

  • Page 37: Parameter-List

    7.3. Parameter-List Min - Max - Default - Ser. Denomination Text Positions Characters Value Value Value Code NPN / PNP CHAr Brightness briGht Code Locking Code SSI-Mode modE SSI-Bits bitS SSI-Format Form SSI-Baudrate bAUd 1000.9 100.0 SSI-Test tESt M-Factor mFAc -9.999 +9.999 1.000...
  • Page 38 Min - Max - Default - Ser. Denomination Text Positions Characters Value Value Value Code Ser. Format S-Form Baud Rate S-bAUd Ser. Address S-Unit Ser. Timer S-tim 9999 Ser. Mode S-mod Register-Code S-CodE Linear. Mode LinEAr Linear. Point 1 P01_H -199999 999999 999999...

  • Page 39: Commissioning Form

    7.4. Commissioning Form Date Software: Operator: Serial Number: General Setting: SSI-Mode: SSI-Bits: SSI-Format: SSI-Baud Rate (kHz): SSI-Test: Characteristics: Brightness Code Locking: Linearization Mode: Presets / Relays: Presel. Mode 1 Presel. Mode 2: Hysteresis 1 Hysteresis 2: Serial Interface: Serial Unit Nr: Serial Format: Serial Baud Rate: Display-Parameters...
  • Page 40 Linearization P1(x): P1(y): P9(x): P9(y): P2(x): P2(y): P10(x): P10(y): P3(x): P3(y): P11(x): P11(y): P4(x): P4(y): P12(x): P12(y): P5(x): P5(y): P13(x): P13(y): P6(x): P6(y): P14(x): P14(y): P7(x): P7(y): P15(x): P15(y): P8(x): P8(y): P16(x): P16(y): IX34208a_e.doc / Aug-09 Page 40 / 40...

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