Pepperl+Fuchs K23-SSI/Rx/IU-C User manual

Your automation, our passion.
K23-SSI/Rx/IU-C
Signal converter
Manual

2
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
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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

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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
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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
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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 low-
voltage 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.

|GENERAL INFORMATION
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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
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
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The individual error codes are explained in more detail below:
Error code
(Error_Status)
Error name
Error description
0x00000001
Maximum Value
Measured value is greater than
99,999,999
0x00000002
Minimum Value
Measured value is less than -
99,999,999
0x00000004
SSI Encoder Error
SSI Error bit set
0x00000010
Frequency (Input A)
out of range
The maximum or minimum
permissible input frequency at input
A was exceeded or not reached with
the exponential filter setting used.
0x00000020
Frequency (Input B)
out of range
The maximum or minimum
permissible input frequency at input
B was exceeded or not reached with
the exponential filter setting used.

|ELECTRICAL CONNECTIONS
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3. Electrical Connections
The terminals should be tightened with a slotted screwdriver (blade width 2 mm).
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
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3.3 Incremental Rotary Encoder Input (X2)
A connection for various incremental signals is available at terminal X2 pins 3, 4,
5, and 6.
RS422
HTL DIFFERENTIAL
HTL PNP HTL NPN

|ELECTRICAL CONNECTIONS
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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
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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,
6.
Connection for managing operation:

|ELECTRICAL CONNECTIONS
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Connection for managed operation:
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
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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.
TInit: 1 µs … 9 µs (adjustable)
TStart: ~3 µs … 5 µs
TStop: ~3 µs … 5 µs
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
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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.
Note
An HTL pulse (rising edge) at Ctrl. In 6 resets the device to factory settings.
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
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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.
CAUTION!
Parallel operation of voltage and current output is not permitted!
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:

|ELECTRICAL CONNECTIONS
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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)
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
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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
Note
The serial USB communication is carried out at a baud rate of "115200 baud" and a
serial data format of "
8none1."
These values cannot be changed by the user!

|OPERATING SOFTWARE OS6.0 /OS10.0
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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 Pepperl-
Fuchs.com
This section shows the overview of the individual menus and their parameters.
Menu
Parameter
GENERAL MENU
MODE
ENCODER PROPERTIES
ENCODER DIRECTION
FACTOR
DIVIDER
ADDITIVE VALUE
LINEARIZATION MODE
BACKUP MEMORY
FACTORY SETTINGS
FREQUENCY MODE
FREQUENCY MODE
FREQUENCY BASE
SAMPLING TIME 1 (S)
WAIT TIME 1 (S)
STANDSTILL TIME 1 (S)
AVERAGE FILTER 1
SAMPLING TIME 2 (S)
WAIT TIME 2 (S)
AVERAGE FILTER 2
COUNTER MODE
COUNT MODE
FACTOR A
SET VALUE A
FACTOR B
SET VALUE B
ROUND LOOP VALUE
SSI MODE
SSI MODE

|OPERATING SOFTWARE OS6.0 /OS10.0
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Menu
Parameter
ENCODER RESOLUTION
DATA FORMAT
BAUD RATE
SSI ZERO
HIGH BIT
LOW BIT
SSI OFFSET
ROUND LOOP VALUE
SAMPLING TIME (S)
ERROR BIT
ERROR POLARITY
PRESELECTION VALUES
PRESELECTION 1
PRESELECTION 2
PRESELECTION 3
PRESELECTION 4
PRESELECTION 5
PRESELECTION 6
PRESELECTION 1 MENU
MODE 1
HYSTERESIS 1
PULSE TIME 1 (S)
OUTPUT TARGET 1
OUTPUT POLARITY 1
OUTPUT LOCK 1
STARTUP DELAY 1 (S)
PRESELECTION 2 MENU
MODE 2
HYSTERESIS 2
PULSE TIME 2 (S)
OUTPUT TARGET 2
OUTPUT POLARITY 2
OUTPUT LOCK 2
STARTUP DELAY 2 (S)
PRESELECTION 3 MENU
MODE 3
HYSTERESIS 3
PULSE TIME 3 (S)
OUTPUT TARGET 3
OUTPUT POLARITY 3
OUTPUT LOCK 3