GB2453981A - User authorization at a operator control panel - Google Patents

User authorization at a operator control panel Download PDF

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Publication number
GB2453981A
GB2453981A GB0720888A GB0720888A GB2453981A GB 2453981 A GB2453981 A GB 2453981A GB 0720888 A GB0720888 A GB 0720888A GB 0720888 A GB0720888 A GB 0720888A GB 2453981 A GB2453981 A GB 2453981A
Authority
GB
United Kingdom
Prior art keywords
control panel
operator control
code
token
panel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB0720888A
Other versions
GB0720888D0 (en
Inventor
Ian Donald
Matthew Stevens
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Siemens PLC
Original Assignee
Siemens AG
Siemens PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG, Siemens PLC filed Critical Siemens AG
Priority to GB0720888A priority Critical patent/GB2453981A/en
Publication of GB0720888D0 publication Critical patent/GB0720888D0/en
Publication of GB2453981A publication Critical patent/GB2453981A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B9/00—Safety arrangements
    • G05B9/02—Safety arrangements electric
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • G05B19/0426—Programming the control sequence
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/20—Individual registration on entry or exit involving the use of a pass
    • G07C9/28—Individual registration on entry or exit involving the use of a pass the pass enabling tracking or indicating presence
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/20—Pc systems
    • G05B2219/24—Pc safety
    • G05B2219/24167—Encryption, password, user access privileges

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Lock And Its Accessories (AREA)

Abstract

To avoid unauthorised entry to an operator control panel (3) for entering control parameters to a driver for machinery a fob or token (10) is provided which transmits an authorisation code. If the code is correct and matches that held on the control panel then the panel is "unlocked" to permit the parameters to be modified or added to. The code may be transmitted wirelessly. The code may be transmitted in response to a user pressing a button on the token or it may be transmitted automatically.

Description

An Ooerator Control Panel This invention relates to an operator control panel for a motor drive.
It is known to provide operator control panels for motor drive in industrial machinery. Control parameters are entered by means of the panel to determine the way in which the machinery works.
It is undesirable for a non-authorised person to be able to change the parameters as this can affect the way the machinery is operated which may lead to efficiency or safety issues. The consequences of this may be severe.
According to the invention there is provided an operator control panel for a motor drive comprising a receiver for, in use, receiving an unlock signal, means to authenticate the unlock signal and in response to authentication, to permit operation of the control panel to permit input or variation of control parameters for the motor drive.
The unlock signal is provided from a user operated device remote from the control panel. In the preferred embodiment, the user operated device or token is in the form of a fob which transmits an identification code by a radio signal.
Thus, until an authenticated signal is received the control panel does not permit the use of the control panel to enter or otherwise vary the control parameters.
The token may be used to unlock one control panel or a number of panels. The transmission may use infra-red or other wireless transmissions. The preferred embodiment uses radio-frequency transmission.
A specific embodiment of the invention will now be described with reference to the drawings in which: Figure 1 shows in schematic form an operator control panel and a token in accordance with the invention.
As is shown in figure 1, an AC motor 1 is operably coupled to a driver 2 which controls the operation of the motor. The driver 2 is provided with an operator control panel 3. The operator control panel 3 includes a processor 4, a keypad 5 coupled to the processor for the entry of control parameters, a memory 6 for holding a program for the control functionality and the entered control parameters, a liquid crystal display 7 is also coupled to the processor 4 as is an identification memory 8. A transceiver section 9 is connected to the processor 4.
A fob 10 includes a processor 11 coupled to a button 12 and a memory 13 storing a unique identification code. The processor 11 is also coupled to a transceiver 14. When the button 12 is pressed the processor 11 responds by outputting the identification code held in memory 14 to the transceiver 14. The transceiver 14 then transmits a signal bearing the code which is received by the transceiver 9 of the control panel.
The transceiver 9 of the control panel obtains the code from the transmission and passes it to the processor 4. The processor 4 compares it with the code in the memory 8 and if it is in agreement then the control panel is unlocked. A user is then able to enter or edit the parameters of the control panel using the keypad 5 and the LCD 7.
The fob and control panel are programmed with the identity numbers in a preliminary step before commissioning. More than one operator control panel may be unlocked by the fob or token.
In some circumstances it may be convenient to avoid the need to press a button to activate the token transmission. This may be achieved by permitting automatic interrogation of fobs in the receiving range of the control panel. The token itself may use reflective modulation techniques to transmit the identification code using the RF signal transmitted from the control panel. In that way, the power requirements for the fob may be provided by the RF signal from the control panel.

Claims (7)

  1. Claims 1. An operator control panel for a drive for machinery which panel enabling the entry by an authorised user of operation parameters to control the machinery operation comprising memory; a receiver for receiving transmissions of identification codes from a user token remote from the panel; means to compare the identification code with a pre-stored code held in the memory and means to unlock the operator control panel in response to an agreement of the transmitted received code with the stored code to permit entry of or modification to the operation parameters.
  2. 2. An operator control panel as claimed in claim 1 wherein the transmitted code is transmitted in a radio -frequency transmission.
  3. 3. An operator control panel as claimed in claim 1 or 2 wherein the machinery is an electric motor.
  4. 4. An operator control panel as claimed in claim 1, 2 or 3 in combination with a user token which token and operator control panel communicating wirelessly.
  5. 5. A user token for unlocking an operator control panel as claimed in any preceding claim.
  6. 6. A user token as claimed in claim 5 comprising a user operable button to transmit an identification code to the operator control panel.
  7. 7. A user token as claimed in claim 6 comprising a radio frequency transmitter for transmitting the code.
GB0720888A 2007-10-25 2007-10-25 User authorization at a operator control panel Withdrawn GB2453981A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0720888A GB2453981A (en) 2007-10-25 2007-10-25 User authorization at a operator control panel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0720888A GB2453981A (en) 2007-10-25 2007-10-25 User authorization at a operator control panel

Publications (2)

Publication Number Publication Date
GB0720888D0 GB0720888D0 (en) 2007-12-05
GB2453981A true GB2453981A (en) 2009-04-29

Family

ID=38829877

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0720888A Withdrawn GB2453981A (en) 2007-10-25 2007-10-25 User authorization at a operator control panel

Country Status (1)

Country Link
GB (1) GB2453981A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2566097A1 (en) * 2011-09-05 2013-03-06 ABB Research Ltd. Enabling a critical command of a device
US10387636B2 (en) 2015-10-20 2019-08-20 Vivint, Inc. Secure unlock of a device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000008606A1 (en) * 1998-07-31 2000-02-17 Engel Maschinenbau Gesellschaft Mbh Control device
WO2003062027A1 (en) * 2001-12-21 2003-07-31 Atlas Copco Rock Drills Ab Method and system for identification
JP2006119860A (en) * 2004-10-21 2006-05-11 Hitachi Kiden Kogyo Ltd Operation authentication system of plant facility
JP2006195621A (en) * 2005-01-12 2006-07-27 Yokogawa Electric Corp User authentication method, user authentication device and equipment management method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000008606A1 (en) * 1998-07-31 2000-02-17 Engel Maschinenbau Gesellschaft Mbh Control device
WO2003062027A1 (en) * 2001-12-21 2003-07-31 Atlas Copco Rock Drills Ab Method and system for identification
JP2006119860A (en) * 2004-10-21 2006-05-11 Hitachi Kiden Kogyo Ltd Operation authentication system of plant facility
JP2006195621A (en) * 2005-01-12 2006-07-27 Yokogawa Electric Corp User authentication method, user authentication device and equipment management method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Merle R. Snyder, 'wireless technology poised to serve' found at http://www.pma-magazine.com/articles/2004/January/3 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2566097A1 (en) * 2011-09-05 2013-03-06 ABB Research Ltd. Enabling a critical command of a device
WO2013034600A1 (en) * 2011-09-05 2013-03-14 Abb Research Ltd Enabling a critical command of a device
US10387636B2 (en) 2015-10-20 2019-08-20 Vivint, Inc. Secure unlock of a device
US11531744B1 (en) 2015-10-20 2022-12-20 Vivint, Inc. Secure unlock of a device

Also Published As

Publication number Publication date
GB0720888D0 (en) 2007-12-05

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Legal Events

Date Code Title Description
COOA Change in applicant's name or ownership of the application
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)