Pepperl+Fuchs DA6-SSI/A-U Manual
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Pepperl+Fuchs DA6-SSI/A-U Manual

Ssi display with analog output
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DA6-SSI/A-U
FACTORY AUTOMATION
MANUAL
DA6-SSI/A-U
SSI Display with analog output

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Summary of Contents for Pepperl+Fuchs DA6-SSI/A-U

  • Page 1 DA6-SSI/A-U FACTORY AUTOMATION MANUAL DA6-SSI/A-U SSI Display with analog output...
  • Page 2 DA6-SSI/A-U 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...

  • Page 3: Table Of Contents

    DA6-SSI/A-U Table of Contents Terminal Assignment ..................... 4 1.1. Power Supply..........................5 1.2. Aux. Voltage Output ........................5 1.3. Control Inputs A, B and C ......................5 1.4. Adjustable Analogue Output ....................... 6 How to Operate the Front Keys..................8 2.1.

  • Page 4: Terminal Assignment

    DA6-SSI/A-U 1. Terminal Assignment Display with analogue output 1 2 3 8 9 10 IX34510a_e.doc / Apr-11 Page 4 / 43...

  • Page 5: Power Supply

    DA6-SSI/A-U 1.1. Power Supply The unit accepts DC supply from 17 V to 30 V when using terminals 1 and 2. The consumption depends on the level of the supply voltage (typical 130mA at 30V or 190mA at 17V, plus current taken from aux. output).

  • Page 6: Adjustable Analogue Output

    DA6-SSI/A-U Typical input circuit of control input +24V int. +24V int. 4,7k Input Input 4,7k The minimum pulse duration on the Reset input (C) must be 5 msec. 1.4. Adjustable Analogue Output A voltage output is available, operating in a range of 0 ... +10 V or –10 V ... +10 V according to setting.

  • Page 7: How To Operate The Front Keys

    DA6-SSI/A-U 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.

  • Page 8: Selection And Setting Of Parameters

    DA6-SSI/A-U 2.2. Selection and Setting of Parameters 2.2.1. How to select a parameter The ENTER key will scroll through the menu. The SET 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

    DA6-SSI/A-U 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

    DA6-SSI/A-U 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

    DA6-SSI/A-U 3.2. Overview of Operational Parameters DA6-SSI/A-U Preselection 2 M-Factor D-Factor P-Factor Decimal point Hi_Bit (MSB) Lo_Bit (LSB) Direction Error Error_Polarity Round Loop Time Reset Zero Position Analogue Begin Analogue End Ser_Value P01_X *) P01_Y*) Æ Æ P16_X *) P16_Y *) *) appears only when Linearization has been enabled in the Basic Menu IX34510a_e.doc / Apr-11...

  • Page 12: Setup Procedure

    DA6-SSI/A-U 4. Setup Procedure For better understanding the following sections 4.1 and 4.2 explain settings for the display only. Model-specific settings for Analogue Output, 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.
  • Page 13 DA6-SSI/A-U 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 (model IX 347) Linearization Mode For details please see 6.1 und 6.2.

  • Page 14: Operational Parameters

    DA6-SSI/A-U 4.2. Operational Parameters Menu Setting Range Default -9.999 … 9.999 1.000 M-Factor *): Multiplying factor for the SSI value (after consideration of possible bit blanking) D-Factor *): 0.001 … 9.999 1.000 Dividing factor for the SSI value (after consideration of possible bit blanking)
  • Page 15 DA6-SSI/A-U Menu Setting Range Default riGht riGht Direction 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 ... 32 Error: (please refer to 5.6)
  • Page 16 DA6-SSI/A-U 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: Additional Parameters For The Analogue Output

    DA6-SSI/A-U 4.3. Additional Parameters for the Analogue Output The following additional settings for the analogue output appear in the Basic Menu: Menu Setting Range Default Analogue Characteristics You can set the following output options: +/- 10 V (bipolar), 0 - 10 V (positive only), 4 - 20 mA 0 - 20 mA.
  • Page 18 DA6-SSI/A-U The subsequent example shows how to convert the display range from 1400 to 2000 into an analogue signal of 2 - 10 volts. Volts Analogue Output SSI Display Value 1000 2000 3000 4000 5000 A-ChAr = 0 - 10 V...

  • Page 19: Hints For Application

    DA6-SSI/A-U 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...

  • Page 20: Evaluation Of Encoder Bits

    DA6-SSI/A-U 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 21: Scaling Of The Display

    DA6-SSI/A-U 5.3. Scaling of the Display Under consideration of the scaling parameters which have been described previously, the final display value of the unit results from M-Factor DISPLAY [Encoder SSI Data] [0-Position] P-Factor D-Factor  Encoder SSI data are always positive only. Where also negative values should be indicated, this can be achieved by corresponding setting of the parameters „0-Position“...

  • Page 22: Basic Modes Of Operation

    DA6-SSI/A-U 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.
  • Page 23 DA6-SSI/A-U 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...
  • Page 24 DA6-SSI/A-U 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 25 DA6-SSI/A-U 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.

  • Page 26: Testing Functions

    DA6-SSI/A-U 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:...

  • Page 27: Special Functions

    DA6-SSI/A-U 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 28 DA6-SSI/A-U 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 φ.

  • Page 29: Manual Input Or „Teaching" Of The Interpolation Points

    DA6-SSI/A-U 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.
  • Page 30 DA6-SSI/A-U  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 31: Technical Appendix

    DA6-SSI/A-U 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’’) IX34510a_e.doc / Apr-11 Page 38 / 43...

  • Page 32: Technical Specifications

    DA6-SSI/A-U 7.2. Technical Specifications Supply voltage AC : 115/230 V (+/- 12.5 %) Supply voltage DC : 24 V (17 – 30 V) Consumption (without sensor) : 17 V: 190 mA, 24 V: 150 mA, 30 V: 120 mA AC Power : 7.5 VA...

  • Page 33: Parameter-List

    DA6-SSI/A-U 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...
  • Page 34 DA6-SSI/A-U 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...

  • Page 35: Commissioning Form

    DA6-SSI/A-U 7.4. Commissioning Form Date Software: Operator: Serial Number: General Setting: SSI-Mode: SSI-Bits: SSI-Format: SSI-Baud Rate (kHz): SSI-Test: Brightness Characteristics: Code Locking: Linearization Mode: Model IX 346 Output Char.: Analogue Offset: Analogue Gain: Model IX 347 Presel. Mode 1 Presel. Mode 2:...
  • Page 36 DA6-SSI/A-U Linearization P1(x): P1(y): P9(x): P9(y): P2(x): P2(y): P10(x): P10(y): P3(x): P3(y): P11(x): P 11(y): P4(x): P4(y): P12(x): P 12(y): P5(x): P5(y): P13(x): P 13(y): P6(x): P6(y): P14(x): P 14(y): P7(x): P7(y): P15(x): P 15(y): P8(x): P8(y): P16(x): P 16(y): IX34510a_e.doc / Apr-11...

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