Pepperl Fuchs K23-SSI/Rx/IU-C User Manual

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K23-SSI/Rx/IU-C

Signal converter

Manual

K23-SSI/Rx/IU-C

The latest version of the General Terms of Supply for Products

and Services in the Electronics Industry set out by the German

Electrical and Electronic Manufacturers' Association (ZVEI) and

the "Extended Reservation of Proprietorship" supplementary

clause apply to this document.

| TABLE OF CONTENTS

Table of Contents

1. Safety and Responsibility ......................................................................................................... 5

1.1 General Safety Information ................................................................................................ 5

1.2 Intended Use ..................................................................................................................... 5

1.3 Installation ......................................................................................................................... 6

1.4 Cleaning, Care, and Maintenance Instructions .................................................................. 6

2. General Information .................................................................................................................. 7

2.1 Operating Modes ............................................................................................................... 7

2.2 Function Diagram .............................................................................................................. 7

2.3 Power LED / Error Messages ............................................................................................ 7

3. Electrical Connections .............................................................................................................. 9

3.1 DC Voltage Supply (X1)..................................................................................................... 9

3.2 Auxiliary Voltage Output (X2) ............................................................................................ 9

3.3 Incremental Rotary Encoder Input (X2) ............................................................................ 10

3.4 Absolute Rotary Encoder Input (X2) ................................................................................ 12

3.5 Start/Stop Encoder Inputs (X2) ........................................................................................ 13

3.6 Control Inputs (X5) .......................................................................................................... 14

3.7 Analog Output (X4) .......................................................................................................... 16

3.8 Serial Interface (X3) ......................................................................................................... 16

3.9 Control Outputs (X6) ........................................................................................................ 17

3.10 USB Interface (X7) .......................................................................................................... 18

4. Operating Software OS6.0 / OS10.0 ....................................................................................... 19

4.1 General Menu .................................................................................................................. 22

4.2 Frequency Mode ............................................................................................................. 25

4.3 Counter Mode .................................................................................................................. 31

4.4 SSI Mode ........................................................................................................................ 33

4.5 Start/Stop Mode .............................................................................................................. 36

4.6 Preselection Values ......................................................................................................... 40

4.7 Preselection 1 Menu ........................................................................................................ 41

4.8 Preselection 2 Menu ........................................................................................................ 45

4.9 Preselection 3 Menu ........................................................................................................ 46

4.10 Preselection 4 Menu ........................................................................................................ 47

4.11 Preselection 5 Menu ........................................................................................................ 49

4.12 Preselection 6 Menu ........................................................................................................ 50

4.13 Serial Menu ..................................................................................................................... 51

4.14 Analog Menu ................................................................................................................... 54

4.15 Command Menu .............................................................................................................. 56

4.16 Linearization Menu .......................................................................................................... 59

5. Appendix ................................................................................................................................. 60

5.1 Reading Out Data via Serial Interface .............................................................................. 60

5.2 Modbus RTU Interface ..................................................................................................... 61

5.2.1 Parameter Settings ................................................................................................... 61

5.2.2 Read Holding Registers and Write Multiple Registers ............................................... 62

5.2.3 Read Coils and Write Single Coil .............................................................................. 64

5.2.4 Diagnostics ............................................................................................................... 65

5.3 Parameter List / Serial Codes .......................................................................................... 65

5.4 Serial Codes of the Commands ....................................................................................... 74

5.5 Linearization .................................................................................................................... 74

5.6 Reading in the SSI Value ................................................................................................. 77

5.7 Operating Modes / OP Modes of the Start/Stop Interface ................................................. 81

5.8 Dimensions ...................................................................................................................... 83

| SAFETY AND RESPONSIBILITY

1. Safety and Responsibility

1.1 General Safety Information

This description is an essential part of the device and contains important information regarding installation, function and use. Failure to observe these instructions may result in damage or impair the safety of people and attachments.

Please read this description carefully and observe all safety and warning messages before commissioning the device for the first time. Keep this description for future reference.

A prerequisite for using this device description is that the relevant personnel have the appropriate qualifications. The device may be installed, configured, commissioned and maintained only by a trained electrician.

Exclusion of liability: The manufacturer is not liable for any personal injury or property damage that may occur as a result of improper installation, commissioning, use or servicing, or due to human misinterpretations or errors within this device description. In addition, the manufacturer reserves the right to make technical changes to the device or description at any time without prior notice. Therefore, possible discrepancies between the device and the description cannot be ruled out.

The safety of the plant or of the overall system in which this device is integrated is the responsibility of the installer of the plant or the overall system.

All general, country-specific, and application-specific safety regulations and standards must be observed and followed during installation, operation, and maintenance work.

If the device is used in processes in which a possible failure or incorrect operation can result in damage to the plant or personal injury, appropriate precautions must be taken to ensure that such consequences are safely prevented.

1.2 Intended Use

This device is intended for use in industrial machinery and plants only. Any other use is not deemed to be in compliance with the provisions and is solely the responsibility of the user. The manufacturer is not liable for damage caused by improper use. The device may only be installed in the correct manner and be used and operated in a technically perfect condition—in accordance with the technical data. The device is not suitable for explosion-protected areas or in areas of application not included in DIN EN 61010-1.

| SAFETY AND RESPONSIBILITY

1.3 Installation

The device may only be installed and operated in an environment that meets the permissible temperature range. Adequate ventilation must be ensured and the device must not have any direct contact with hot or aggressive gases or liquids.

The unit must be disconnected from all voltage sources prior to installation and before any maintenance work. It must also be ensured that no further danger can arise from touching the disconnected voltage sources.

Devices that are supplied with AC voltage may only be connected to the lowvoltage network via switches or circuit breakers. This switch must be positioned close to the device and must have a marking that identifies it as a disconnector.

Input and output cables for extra-low voltages must be separated from dangerous, current-carrying cables by means of double or reinforced insulation (SELV circuits).

All cables and insulation selected must correspond to the intended voltage and temperature range. Device and country-specific standards must also be observed, which apply to the cables in terms of design, shape, and quality. For information on permissible cable cross sections for the screw terminal connections, refer to the technical data.

Before commissioning, all connections and cables must be checked for a solid fit in the screw terminals. All screw terminals (including unused ones) must be screwed in as far as they will go to ensure that they are securely fastened and cannot come loose in the event of mechanical vibrations.

Overvoltages at the connections to the device must be limited to the values of the gas group II overvoltage category.

The general standards for switch cabinet construction in the machinery industry and the manufacturer's specific shielding regulations apply with regard to installation, wiring, ambient conditions, and shielding and grounding of supply cables.

1.4 Cleaning, Care, and Maintenance Instructions

To clean the front, use only a soft, slightly damp cloth. No cleaning work is intended or required for the rear of the device. Unscheduled cleaning is the responsibility of the competent maintenance personnel or the relevant technician.

During normal operation, the device does not require any maintenance procedures. In the event of unexpected problems, errors or malfunctions, the device must be sent to the manufacturer to be checked and repaired if necessary. Unauthorized opening and repair can result in impairment or even failure of the protective measures supported by the device.

2. General Information

The device is designed as a signal converter with control inputs and outputs. Its extensive functions make it suitable for universal use.

2.1 Operating Modes

In general, all functions must be configured in the parameter menu. The device can be used in the following operating modes:

 Operation as a frequency converter for incremental input signals  Operation as a position converter/counter for incremental input signals  Operation as an absolute value converter for SSI signals

2.2 Function Diagram

| GENERAL INFORMATION

2.3 Power LED / Error Messages

The device has a green LED on the front film. This lights up continuously as soon as the supply voltage of the device has been established. If an error occurs, the LED flashes in a 1-Hz cycle. The analog output is also modulated with 0 V or 0/4 mA. When there is no longer an error, the LED automatically lights up continuously again and the analog output reacts once more to the result currently pending.

The exact error can be read out on the user interface (OS 6.0) via the serial interface. ( Variable: Error_Status, Code: ";3"). See Chapter 4.

| GENERAL INFORMATION

Error code

(Error_Status)

Error name

Error description

0x00000001

Maximum Value

Measured value is greater than

0x00000002

Minimum Value

Measured value is less than 0x00000004

SSI Encoder Error

SSI Error bit set

0x00000010

Frequency (Input A)

The maximum or minimum

0x00000020

Frequency (Input B)

The maximum or minimum

The individual error codes are explained in more detail below:

99,999,999

out of range

permissible input frequency at input A was exceeded or not reached with the exponential filter setting used.

out of range

permissible input frequency at input B was exceeded or not reached with the exponential filter setting used.

3. Electrical Connections

The terminals should be tightened with a slotted screwdriver (blade width 2 mm).

| ELECTRICAL CONNECTIONS

3.1 DC Voltage Supply (X1)

The device can be supplied with a DC voltage between 18 and 30 V DC via terminal X1 pins 1 and 2. The current consumption depends, among other things, on the level of the supply voltage and the settings and is approx. 50 mA, plus the rotary encoder current taken from the auxiliary voltage output.

All GND connections are connected internally.

3.2 Auxiliary Voltage Output (X2)

Two auxiliary voltages 24 V DC and 5 V DC are available as encoder/sensor supply at terminal X2 pins 7, 8, and 9. The 24-V DC output voltage depends on the device supply (see Technische Daten).

| ELECTRICAL CONNECTIONS

RS422

HTL DIFFERENTIAL

3.3 Incremental Rotary Encoder Input (X2)

A connection for various incremental signals is available at terminal X2 pins 3, 4, 5, and 6.

HTL PNP

HTL NPN

| ELECTRICAL CONNECTIONS

HTL NPN (NAMUR)

TTL (PNP)

In general, open PNP inputs are "LOW" and open NPN inputs are "HIGH."

The input stages are designed for electronic pulse generators.

Note for mechanical switching contacts:

If, in exceptional cases, mechanical contacts are to be used as a pulse source, a commercially available external capacitor of approx. 10 µF must be installed at the terminals between GND(-) and the corresponding input (+). This attenuates the maximum input frequency to approximately 20 Hz and suppresses bouncing.

| ELECTRICAL CONNECTIONS

3.4 Absolute Rotary Encoder Input (X2)

The SSI connection is available for managing operation at terminal X2 pins 1, 2, 3, 4.

The SSI connection is available for managed operation at terminal X2 pins 3, 4, 5,

Connection for managing operation:

Connection for managed operation:

| ELECTRICAL CONNECTIONS

3.5 Start/Stop Encoder Inputs (X2)

The RS422 connection is available for the init pulse in managing operation at terminal X2 pins 1+2. The device generates the init pulse.

The RS422 connection is available for the init pulse in managed operation at terminal X2 pins 5+6. The init pulse is generated by an external device.

The RS422 connection is available for the Start/Stop pulse at terminal X2 pins 3+4.

| ELECTRICAL CONNECTIONS

Connection of the RS422 signals

DPI measurement mode:

In managing operation, the init pulse is sent at regular intervals (=SAMPLING TIME [ms]) on the init line to the displacement transducer, the rising edge of which triggers a measurement.

The pulse duration of the init pulse can be set using the "INIT pulse TIME (µs)" parameter.

: 1 µs … 9 µs (adjustable)

Init

: ~3 µs … 5 µs

Start

: ~3 µs … 5 µs

Stop

3.6 Control Inputs (X5)

Six control inputs with HTL-PNP characteristics are available at terminal X5 pins 2, 3, 4, 5, 6, and 7.

Control input 1 (Ctrl. In 1) to control input 5 (Ctrl. In 5) are freely configurable in the COMMAND menu and are used for externally triggered functions such as releasing the self-locking mechanism, resetting the measurement result, or for

| ELECTRICAL CONNECTIONS

Note

An HTL pulse (rising edge) at Ctrl. In 6 resets the device to factory settings.

teaching the preselection values or the analog output.

Control input 6 (Ctrl. In 6) is used exclusively for resetting the device parameters to the "default" values and is therefore not freely configurable.

Connection of the control inputs:

Generally, open control inputs are "LOW."

The input stages are designed for electronic control signals.

Note for mechanical switching contacts:

With mechanical contacts as a pulse source, a commercially available external capacitor of approx. 10 µF must be installed between GND(-) and the corresponding input (+). This attenuates the maximum input frequency to approximately 20 Hz and suppresses bouncing.

| ELECTRICAL CONNECTIONS

CAUTION!

Parallel operation of voltage and current output is not permitted!

3.7 Analog Output (X4)

A 16-bit analog output is available at terminal X4.

This output can be configured and scaled in the ANALOG MENU.

The following configuration is possible:

 Voltage output: -10 V … +10 V

 Current output: 0 mA … 20 mA

 Current output: 4 mA … 20 mA

The analog output is proportional to the measurement result and refers to AGND potential.

AGND and device GND are connected internally.

3.8 Serial Interface (X3)

A serial interface (RS232 or RS485) is available at terminal X3.

This interface can be configured in the SERIAL MENU.

The RS232 or RS485 interface can be used as follows:

 For parameterization of the device during commissioning

 For changing parameters during operation

 For reading out actual values via PLC or PC

Connection of the RS232 interface:

Connection of the RS485 interface:

CAUTION!

Parallel operation of RS232 and RS485 is not permitted!

Default values: 9600 baud, 7even1

3.9 Control Outputs (X6)

| ELECTRICAL CONNECTIONS

Six control outputs are available at terminal X6 pins 2, 3, 4, 5, 6, and 7.

The switch conditions can be adjusted accordingly in the PRESELECTION MENU.

Outputs Ctrl. Out 1–6 are quick PNP control outputs.

The switching voltage is determined by the voltage supplied to terminal X6 pin 1 (COM+).

External attenuation measures are recommended for switching inductive loads.

Connection of the control outputs:

| ELECTRICAL CONNECTIONS

Note

The serial USB communication is carried out at a baud rate of "115200 baud" and a serial data format of "

These values cannot be changed by the user!

3.10 USB Interface (X7)

A serial USB interface (mini USB) is available at terminal X7.

The USB interface can be used as follows:

 For parameterization of the device during commissioning

 For changing parameters during operation

 For reading out actual values via PC

8none1."

| OPERATING SOFTWARE OS6.0 / OS10.0

Parameter

GENERAL MENU

MODE

FACTORY SETTINGS

FREQUENCY MODE

AVERAGE FILTER 2

COUNTER MODE

COUNT MODE

ROUND LOOP VALUE

SSI MODE

4. Operating Software OS6.0 /

OS10.0

The device is parameterized:

 via the serial interface using a PC and the OS6.0 operating software.

 via the USB interface using a PC and the OS10.0 operating software.

The free operating software OS6.0 and OS10.0 can be found at

Fuchs.com

This section shows the overview of the individual menus and their parameters.

ENCODER PROPERTIES

ENCODER DIRECTION

FACTOR

DIVIDER

ADDITIVE VALUE

LINEARIZATION MODE

BACKUP MEMORY

FREQUENCY BASE

Pepperl-

SAMPLING TIME 1 (S)

WAIT TIME 1 (S)

STANDSTILL TIME 1 (S)

AVERAGE FILTER 1

SAMPLING TIME 2 (S)

WAIT TIME 2 (S)

FACTOR A

SET VALUE A

FACTOR B

SET VALUE B

| OPERATING SOFTWARE OS6.0 / OS10.0

Parameter

ENCODER RESOLUTION

ERROR POLARITY

PRESELECTION VALUES

PRESELECTION 1

PRESELECTION 6

PRESELECTION 1 MENU

MODE 1

STARTUP DELAY 1 (S)

PRESELECTION 2 MENU

MODE 2

PRESELECTION 3 MENU

MODE 3

DATA FORMAT

BAUD RATE

SSI ZERO

HIGH BIT

LOW BIT

SSI OFFSET

ROUND LOOP VALUE

SAMPLING TIME (S)

ERROR BIT

PRESELECTION 2

PRESELECTION 3

PRESELECTION 4

PRESELECTION 5

HYSTERESIS 1

PULSE TIME 1 (S)

OUTPUT TARGET 1

OUTPUT POLARITY 1

OUTPUT LOCK 1

HYSTERESIS 2

PULSE TIME 2 (S)

OUTPUT TARGET 2

OUTPUT POLARITY 2

OUTPUT LOCK 2

STARTUP DELAY 2 (S)

HYSTERESIS 3

PULSE TIME 3 (S)

OUTPUT TARGET 3

OUTPUT POLARITY 3

OUTPUT LOCK 3

| OPERATING SOFTWARE OS6.0 / OS10.0

Parameter

STARTUP DELAY 3 (S)

PRESELECTION 4 MENU

MODE 4

STARTUP DELAY 4 (S)

PRESELECTION 5 MENU

MODE 5

STARTUP DELAY 5 (S)

PRESELECTION 6 MENU

MODE 6

STARTUP DELAY 6 (S)

SERIAL MENU

UNIT NUMBER

MODBUS

ANALOG MENU

ANALOG FORMAT

COMMAND MENU

INPUT 1 ACTION

HYSTERESIS 4

PULSE TIME 4 (S)

OUTPUT TARGET 4

OUTPUT POLARITY 4 (S)

OUTPUT LOCK 4

HYSTERESIS 5

PULSE TIME 5 (S)

OUTPUT TARGET 5

OUTPUT POLARITY 5

OUTPUT LOCK 5

HYSTERESIS 6

PULSE TIME 6 (S)

OUTPUT TARGET 6

OUTPUT POLARITY 6

OUTPUT LOCK 6

SERIAL BAUD RATE

SERIAL FORMAT

SERIAL INIT

SERIAL PROTOCOL

SERIAL TIMER (S)

SERIAL VALUE

ANALOG START

ANALOG END

ANALOG GAIN (%)

ANALOG OFFSET (%)

INPUT 1 CONFIG

| OPERATING SOFTWARE OS6.0 / OS10.0

Parameter

INPUT 2 ACTION

LINEARIZATION MENU

P1(X)

Value

Designation

Function

NOT DEFINED

Operating mode: Not defined, modulation and measurement results are zero

FREQUENCY

Operating mode: Frequency converter,

COUNTER

Operating mode: Counter, incremental signals

SSI

Operating mode: Absolute value converter, SSI 4

START/STOP

Operating mode: Start/Stop interface converter

INPUT 2 CONFIG

INPUT 3 ACTION

INPUT 3 CONFIG

INPUT 4 ACTION

INPUT 4 CONFIG

INPUT 5 ACTION

INPUT 5 CONFIG

INPUT 6 ACTION (FACTORY SETTINGS)

INPUT 6 CONFIG (RISING EDGE)

P1(Y)

P2(X)

4.1 General Menu

MODE (operating mode)

This parameter defines which measurement function (operating mode/mode) the device should fulfill.

P2(Y)

…

P23(X)

P23(Y)

P24(X)

P24(Y)

incremental signals (replaces FU252)

(replaces ZU252)

signals (replaces IV251)

| OPERATING SOFTWARE OS6.0 / OS10.0

Value

Designation

Function

RS422

RS422 standard

HTL DIFFERENTIAL

HTL PNP

PNP (switching to +)

HTL NPN

NPN (switching to -)

TTL PNP

TTL PNP (switching to +)

Value

Designation

Function

FORWARD

Forward

REVERSE

Backward

Value

Function

-99999999

Smallest value

Default value

99999999

Largest value

Value

Function

-99999999

Smallest value

Default value

99999999

Largest value

ENCODER PROPERTIES

This parameter defines the characteristics of the incremental input.

HTL differential

ENCODER DIRECTION

This parameter reverses the direction of counting and/or travel.

FACTOR (multiplication factor)

This parameter defines the factor by which the measurement result is multiplied.

DIVIDER (division factor)

This parameter defines the divisor by which the measurement result is divided.

| OPERATING SOFTWARE OS6.0 / OS10.0

Value

Function

-99999999

Smallest value

Default value

99999999

Largest value

Value

Designation

Function

OFF

No linearization

1 QUADRANT

Linearization in the first quadrant

4 QUADRANT

Linearization in all four quadrants

Value

Designation

Function

No retentive memory

YES

Retentive memory active. Stores the actual

Value

Designation

Function

The factory settings are not loaded

YES

The factory settings are loaded

ADDITIVE VALUE (additive constant)

This parameter defines an additive constant, which is added to the measurement result.

LINEARIZATION MODE

This parameter defines the linearization function. Note the information in the appendix!

BACKUP MEMORY (retentive memory)

FACTORY SETTINGS

value of the counter readings in the event of a power failure and "counter" mode is switched on.

4.2 Frequency Mode

Value

Designation

Function

A ONLY

Single-channel frequency measurement (only for channel A).

RATIO

Frequency ratio of both channels (channel B /

decimal places in the format +/- x.xxxx

PERCENT

Percentage deviation from channel B to channel

places in the format +/- xxx.xx %

A + B

Frequency addition of both channels (channel A + channel B)

A - B

Frequency subtraction of both channels (channel A - channel B)

A/B x 90°

Frequency measurement with A/B x 90° signal.

monitoring)

Value

Function

1 Hz

(Interpretation of result in format: xxxxxxxx Hz)

1/10 Hz (Interpretation of result in format: xxxxxxx.x Hz)

1/100 Hz

(Interpretation of result in format: xxxxxx.xx Hz)

1/1000 Hz

(Interpretation of result in format: xxxxx.xxx Hz)

In this menu, the operation is defined as a frequency converter (incremental signals). Depending on the operating mode set, only channel A or both channels (channel A and channel B) are active.

FREQUENCY MODE

This parameter determines which operating mode of the frequency measurement is desired.

| OPERATING SOFTWARE OS6.0 / OS10.0

channel A).

Note: Interpretation of the result with four

Note: Interpretation of the result with two decimal

(Forward/backward—rotation direction

FREQUENCY BASE

Sets the desired base for frequency measurement (resolution).

| OPERATING SOFTWARE OS6.0 / OS10.0

Value

Function

0.001

Minimum measuring time in seconds

0.1

Default value

9.999

Maximum measuring time in seconds

Value

Function

0.01

Frequency = 0 Hz for frequencies less than 100 Hz

1.00

Default value

79.99

Frequency = 0 Hz for frequencies less than ~ 0.01 Hz

SAMPLING TIME 1 (S)

The set value is the minimum measuring time (for channel A) in seconds. The sampling time acts as a filter for irregular frequencies. This parameter directly affects the reaction time of the device.

WAIT TIME 1 (S)

The set value is the zero setting time. This parameter defines the duration of the lowest frequency, or the waiting time between two rising edges on channel A, at which the device detects the 0 Hz frequency. Frequencies with a duration greater than the set WAIT TIME 1 are evaluated as frequency = 0 Hz.

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Pepperl Fuchs K23-SSI/Rx/IU-C User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual