EUCHNER EKS2 Electronic Key System Instruction Manual

EUCHNER- EKS2- Electronic- Key -System

1. About this document

Scope
These operating instructions apply to all EKS2-C-USB-M-I1S1-B1-… from version V1.0.0. These operating instructions, the supplementary documents and any enclosed data sheet form the complete user information for your device.

Target group
Design engineers and installation planners for safety devices on machines as well as setup and servicing staff possessing the following expertise:

• specialist knowledge in handling safety components
• knowledge about the applicable EMC regulations
• knowledge about the applicable regulations on operational safety and accident prevention

Key to symbols

DANGER WARNING CAUTION

| ****

Safety precautions

Danger of death or severe injuries Warning about possible injuries Caution slight injuries possible

NOTICE

Important!

| ****

Notice about possible device damage

Important information

Tip| Useful information

Supplementary documents
The overall documentation for this device consists of the following documents:

Important!
Always read all documents to gain a complete overview of safe installation, setup and use of the device.

Correct use

The device is used in combination with a touch panel or softkeys as part of a higher-level overall system for selection of operating mode. Before the device is used, a risk assessment must be performed on the machine, e.g. in accordance with the following standards:

• EN ISO 13849-1
• EN ISO 12100
• IEC 62061

Correct use includes observing the relevant requirements for installation and operation, particularly based on the following standards:

• EN ISO 13849-1
• EN 60204-1

The device may be operated only with suitable smartcards and the EUCHNER connection components. On the use of unsuitable smartcards or other connection components, EUCHNER provides no warranty for safe function.

Important!

• The user is responsible for the proper integration of the device into a safe overall system. For this purpose, the overall system must be validated, e.g. in accordance with EN ISO 13849-2.
• Use only components that are permissible in accordance with the table below.

3860313

| 166174

166175

| Smartcard for selecting an operating mode
Smartcard| 3875480| 166176|
 | 3875481| 166177| Smartcard for selecting an operating mode and the Service mode
 | 3796652| 166178| Smartcard for selecting an operating mode and the device configuration
.NET library| 2546104| 2546104| EKS class library
testdmgmori.py|  |  | Use of the pyeks library

Description of the safety function

Devices from the series EKS2-… feature the following safety function: Safe switching and monitoring of the selected operating mode (subsystem of the safety function selection of operating mode according to EN ISO 13849-1)

• Safety function:
  • Safe selection of an operating mode using a touch panel
  • Safe detection of a change of operating mode
• Safety characteristics: category, Performance Level, PFHD (see chapter 13. Technical data on page 14).

Selection of operating mode
As a subsystem, the device fulfills the subfunctions of an operating mode selector that controls the machine’s safety functions required for the selected operating mode. A failure or malfunction of selection of operating mode can lead to the safety functions of the selected operating mode not being activated in the machine. A system for selection of operating mode can be subdivided into the following subfunctions according to EN ISO 16090-1, for example:

• Access system
• Selection system
• Activation system

Incorrect behavior or an error in the selection system subfunction can lead to the safety function of the overall selection of operating mode system failing. The device fulfills the access system subfunction and, in combination with a touch panel, the selection system subfunction. The safety function is ensured by a two-stage interaction between the device and the touch panel. This involves prompting confirmation of the selection in a new, additional dialog.

Two-stage interaction between EKS2 and touch panel

Operating Instructions Electronic-Key-System EKS2

The data structure of selection of operating mode is hierarchically structured for the individual authorization levels, and it changes values accordingly in the individual polling levels.

Data structure of selection of operating mode

To fulfill the safety function of the overall selection of operating mode system, a suitable activation system must be connected to the safe outputs of the device. A suitable activation system is a safe control system that can process 1-of-n signals, for example. The failure probability of the overall system’s safety function can therefore be calculated as follows: PFHD,tot. = PFHD,EKS2 + PFHD,Control

Exclusion of liability and warranty

Liability or warranty is ruled out in case of:

• Incorrect use
• Failure to comply with the operating instructions and the safety regulations therein
• Failure to perform the required check for correct function
• Changes to the device

General safety precautions

Safe operating mode selectors fulfill personnel protection functions. Incorrect installation of the subsystem or tampering can lead to fatal injuries to personnel. Observe the following safety regulations to prevent failure of the personnel protection function:

• Visually inspect all components for damage prior to mounting and connection. Do not use damaged components; file a complaint with the manufacturer instead.
• Do not modify or replace plugs or cables.
• Check the safe function of the device as a subsystem, particularly:
  • each time after initial setup
  • each time after replacing the device
  • each time after correcting an error
  • in accordance with the machine’s maintenance schedul

Function

The device is part of a higher-level overall system for selection of operating mode on safe control systems. The device consists of a reader and various smartcards. Authorizations for selecting various operating modes are stored on the smartcards. After being read in the reader, the smartcard is checked for validity based on specific parameters. If the smartcard is rec-ognized as valid, the operating modes available for selection can be displayed on the machine’s touch panel. The selected operating mode is transmitted via the device’s safety outputs FO1A to FO1F to the safe control system of the machine acting as the activation system. The safe control system must be capable of processing 1-of-n signals. Each 1-of-n state maps an operating mode MO (Mode of Operation):

1. Operating mode change: state duration from 2 to max. 60 ms; safe state: state duration longer than 60 ms.
2. The subsystem EKS2 is in the safe state. An error must be reported to the control system.

The LED illumination of the card holder indicates the status and error messages (see chapter 12. Status and fault displays on page 11).

Smartcards

Various smartcards are available for the device. They differ regarding the type and scope of authorization for selection of operating mode MO.

3860313

|

Mode 3 (MO3)

| Automatic mode Setup

Automatic mode with manual intervention

3875480

|

Mode 4 (MO4)

| Automatic mode Setup

Automatic mode with manual intervention

Automatic mode with manual intervention without enabling device

3875481

|

Mode Service (MO Service)

| Automatic mode Setup

Automatic mode with manual intervention

Automatic mode with manual intervention without enabling device Service mode

3796652| Mode Master (MO1)| Automatic mode

Mounting

Assembly instructions are included with the device and form part of these operating instructions. Observe the following points during mounting:

• Install the reader on the side of the touch panel. If the reader is installed on the upper or lower frame of the touch panel, make sure that:
  • no dust or dirt particles can enter the card holder from above.
  • vibrations cannot cause the smart card to fall out of the reader.
• Ensure adequate ventilation for the device to maintain the ambient temperature (see 13. Technical data on page 14).
• Maintain a distance of at least 2.5 mm from metal surfaces.
• Fasten screws with a tightening torque of 1 ± 0.15 Nm.

Electrical connection

General notes

Loss of the safety function due to incorrect electrical connection.
►   Ensure that at least four of the safety outputs FO1A to FO1F can be evaluated by a safe control system at all times.
►    Ensure that the safe control system can process 1-of-n signals.
►    Lay the connecting cables with protection to prevent short circuits.
►    Do not lay connecting cables in the immediate vicinity of sources of interference.
**| CAUTION**
---|---
Risk of damage to equipment or malfunctions as a result of incorrect electrical connection.
►   Ensure that all circuits connected to the device comply with the regulations for low voltages with safe electrical isolation (SELV/PELV).
►   Ensure that power devices, which are a powerful source of interference, are installed in a separate location away from the input and output circuits for signal processing. The cables of the safety circuits must be installed as far away as possible from the cables of the power circuits.
►   Ensure that, to avoid EMC interference, the physical environmental and operating conditions at the installation site of the device comply with the requirements according to the standard EN 60204-1:2016, section 4.4.2 (EMC).
►   Pay attention to any interference fields from devices such as frequency converters or induction heating systems. Observe the EMC notes in the manuals from the respective manufacturer.

Notes about

►    This device is intended to be used with a Class 2 power source in accordance with UL1310.

As an alternative an LV/C (Limited Voltage/Current) power source with the following properties can be used:

This device shall be used with a suitable isolating source in conjunction with a fuse in accordance with UL248. The fuse shall be rated max. 3.3 A and be installed in the max. 30 V DC power supply to the device in order to limit the available current to comply with the UL requirements. Please note

possibly lower connection ratings for your device (refer to the technical data).

►   For use and application as per the requirements of   1) a connecting cable listed under the UL category code CYJV/7 must be used.

1. Note on the scope of the UL approval: the devices have been tested as per the requirements of UL508 and CSA/ C22.2 no. 14 (protection against electric shock and fire).

Terminal assignment Connection terminal

USB interface
The device is connected to the touch panel using the permanently mounted USB cable.

Setup

When programming the evaluation in the safe control system, ensure that, when the operating mode is selected, exactly one output is set at the safety outputs FO1A to FO1F for transmission to the safe control system via 1-of-n evaluation.

This means:

►   If more than one output or no output is set, there is an error in the device or in the cable installa- tion. The safe control system must be capable of reacting to such errors in accordance with the machine’s risk assessment.
►   When the device is reset, the setting of an output can be delayed by up to 5 s. Operating mode MO1 is selected automatically after the reset.

Operation

If the smartcard is removed from the reader in operating mode MO4 or Service mode, the selected operating mode will be retained for up to 15 s:

►   If the same smartcard is re-inserted into the reader within 15 s, the corresponding operating mode will be regarded as still being selected.

►   If no smartcard is inserted into the reader within the 15 s, the device will automatically switch to operating mode MO1.

►   If a different smartcard is inserted into the reader within the 15 s, the device will immediately switch to operating mode MO1.

Status and fault displays

The card holder’s LED illumination indicates the individual status and error messages. Detailed error messages can be output on the touch panel.

Smartcard status and fault displays

Status code| ENUM in .NET

‘KeyStatus’

| ****

Status/error

| ****

Meaning

| LED indicator| ****

Troubleshooting

---|---|---|---|---|---
yellow| green
0x00| NoKey| Card not inserted or cannot be read.| The device is ready for operation. No card is inserted or card cannot be read.| |  | Not an error
0x01| ValidKeyInsert| Card inserted. Card valid.| The inserted card was checked. The card is valid.|  | | Not an error
0x02| KeyInvalid| Invalid authentication| The card is valid, but an authentication parameter does not match the pre- scribed values.| |  | Use card with valid parameters
0x03| KeyLocked| Card blocked| The card can be read but is locked.| |  | Use a valid card.
0x04| KeyExpired| Expired validity date of the card| The card can be read, but the validity date has expired.| |  | Use a valid card or extend the validity date.
0x05| KeyUnknownData- Structure| Invalid data structure| The card can be read, but its data structure is invalid.| |  | Card does not belong to this ma- chine. Use a valid card.
0x06| InvalidFileContent| File error| The file content is invalid and cannot be read. The file is not safe (security).| |  | Card is faulty or does not belong to this machine. Use a valid card.
0x07| FileError| File error| At least one data record on the card is invalid and cannot be read. The file is not safe (security).| |  | Card is faulty or does not belong to this machine. Use a valid card.
0x08| KeyTypeNotSup- ported| Invalid card type| The card can be read, but the card type is invalid.| |  | Card does not belong to this ma- chine. Use a valid card.
0x09| KeyCommuncation Error| Communication error| Disrupted communication with the touch panel. There may be an EMC fault.|  |

6 x

| 1.  Switch the device off.

2.  Check the connecting cables to the touch panel and to the safe control system.

3.  Restart the device.

Contact the manufacturer if the problem persists.

100| NoKeyWithFallback Timeout| No card inserted, and fallback timeout is activated.| Only in .Net library: no card inserted. The device will switch to a different safe operating mode when the fallback timer elapses.|  |  | Insert a valid card with the appropri- ate authorization within the timeout period.
101| KeyUIDUnreadable| UID of the inserted card can- not be read.| Only in .Net library: the unique identifier (UID) of the card cannot be read.|  |  | Use a valid card.
102| KeyInMaximumMO NotDeterminable| Error when reading the highest permissible operating mode.| Only in .Net library: the highest permis- sible operating mode of the inserted card cannot be read.|  |  | Use a valid card.

EKS2 status and fault displays

Error code| ****

ENUM in .NET

| ****

Error

| ****

Meaning

| State of safe- ty outputs| ****

Reset

| LED indicator| ****

Troubleshooting

---|---|---|---|---|---|---|---
green| red| yellow
–|  |  | The device starts. Communication not possible.| All off|  |  |
---|---|---|---|---|---|---|---
0x00|  |  | The device is in operation.| Depending on the selected operating mode|  | Depending on the card status (see “12.1. Smartcard status and fault displays”)
0x01| Enum(EKSError) + Value(EKS Error Code)| Internal error| The device has an internal error.|

At least two outputs on

| Reset not possible|  |  |  | Replace the device.
---|---|---|---|---|---|---|---|---|---
0x02| Enum(EKSError) + Value(EKS Error Code)| Configuration error| Invalid configuration| Reset not possible|  1 x|  |  | Restart the machine.
0x10| Enum(EKSError) + Value(EKS Error Code)| Invalid output state| The output state is invalid (1-to-n):

•          Several outputs are switched (short circuit).

•          Wrong output is switched.

•          The output cannot be switched.

|

At least two outputs on

| Select operating mode again or restart via .NET library|  2 x|  |  | Internal error or connection error. Check connections.
---|---|---|---|---|---|---|---|---|---
0x11| Enum(EKSError) + Value(EKS Error Code)| Voltage is too high or too low.| Voltage monitoring at the outputs reports an error:

•          The output voltage is too high.

•          The output voltage is too low.

| Select operating mode again or restart via .NET library|  2 x|  |  | Check connections.
0x20| Enum(EKSError) + Value(EKS Error Code)| Supply voltage too high|  |

All off

|

Select operating mode again or restart via .NET library

|

3 x

|

|

| Check connections and power supply.
---|---|---|---|---|---|---|---|---|---
0x21| Enum(EKSError) + Value(EKS Error Code)| Supply voltage too low|
0x22| Enum(EKSError) + Value(EKS Error Code)| Temperature too high|  | Check ambient conditions.
0x23| Enum(EKSError) + Value(EKS Error Code)| Temperature too low|  | At least two outputs on
0x30| –| Communication timeout| The polling time of 1 s was exceeded.

.NET library does not send an error code. Error appears only in the transfer protocol.

| Irrelevant| Reset possible|  |  |  6 x| No or invalid card inserted. Check connections.
---|---|---|---|---|---|---|---|---|---
 |  |  |  |  |  |  6 x|  |  | Card is valid. Check connec- tions.
–| ?| Faulty communication| Only in .NET library: incorrect USB connection or faulty cable.| Irrelevant|  |  | Check connections.
0x40| InvalidSelectedMO InvalidConfirmedMO| Invalid selection of operating mode| Invalid selection of operating mode:

•          The selected operating mode does not match

the authorization.

•          The confirmed operating mode does not match

the selected operating mode.

| Irrelevant| Reset possible| See “Normal operation”|
---|---|---|---|---|---|---|---

Firmware status display

LED indicator| ****

Meaning

---|---
green| red
See “Normal operation”| Firmware data are sent to the device during normal operation.
---|---
 |  5 Hz| The firmware update is activated via a separate command.
 | The firmware update was successful. Acknowledge flashing code by restart or separate command.
 | The device has been reset to the factory settings. A restart is required.
---|---

Technical data

Technical data for EKS2

with screw terminal (tightening torque 0.2 … 0.25 Nm), conductor cross-section 0.05 … 1.5 mm²

|
Interface to the PC| USB full speed|
Transfer protocol| USB 2.0|
Data transfer rate| 12| Mbits
USB interface connection| Socket type A|
USB cable length| 0.5| m
Output cable length| 20| m
Operating voltage UB (reverse polarity protected, regulated, residual ripple < 5%)| 24 ± 15% (SELV/PELV)| V DC
Current consumption| 100| mA
Switching current| 50| mA
The following applies to the approval acc. to UL| Operation only with UL class 2 power supply or equivalent measures|
Switching load acc. to UL| DC 24 V, class 2|
External fuse (operating voltage UB)| 1.5| –| 10| A
Rated impulse withstand voltage Uimp| –| –| ± 1| kV
Rated conditional short-circuit current| 200| A
Resilience to vibration| As per EN 60947-5-2|
EMC protection requirements| As per IEC 61000-6-2|
Safety outputs FO1A/FO1B|  | Semiconductor outputs, p-switching, short circuit-proof|
– Output voltage UFO1A…UFO1F|  |  |  |  | ****

V DC

HIGH  UFO1A…UFO1F|  | UB – 1.5| –| UB
LOW    UFO1A…UFO1F|  | 0| –| 1
Switching current per safety output| 1| –| 50| mA
Utilization category acc. to EN 60947-5-2| DC-13 24V 150 mA

Caution: outputs must be protected with a free-wheeling diode in case of inductive loads

|
Off-state current Ir 1)| 0.5| mA
Reliability values acc. to EN ISO 13849-1|  |
Mission time| 20| years
Monitoring of guard locking and the guard position|
Category| 3|
Performance Level (PL)| d|
PFHD| 1.01 x 10-7/h|

Radio frequency approvals

• FCC ID: 2AJ58-14
• IC: 22052-14

FCC/IC-Requirements

This device complies with part 15 of the FCC Rules and with Industry Canada’s licence-exempt RSSs. Operation is subject to the following two conditions:

1. This device may not cause harmful interference, and
2. his device must accept any interference received, including interference that may cause undesired operation. Changes or modifications not expressly approved by the party responsible for compliance could void the user‘s authority to operate the equipment.

NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.
Dimension drawing for EKS2…

Inspection and service
Regular inspection of the following is necessary to ensure trouble-free long- term operation:

• Ì Check the secure mounting of the devices and the connections
  Ì Check for contamination

No servicing is required. Repairs to the device are only allowed to be made by the manufacturer.

NOTICE
The year of manufacture can be seen in the lower right corner of the type label. The current version number in the format (V X.X.X) can also be found on the device.

Service

If servicing is required, please contact:

• EUCHNER GmbH + Co.
• KG Kohlhammerstraße 16
• 70771 Leinfelden-Echterdingen Germany

Service telephone:
+49 711 7597-500
E-mail:
support@euchner.de
Internet:
www.euchner.com

References

• EUCHNER – More than safety.
• EUCHNER – More than safety.
• EUCHNER – More than safety.

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