Table of contents 5 Table of contents 1 Safety instructions Contents of this chapter ................Use of warnings and notes ..............Instructions for functional safety circuits ............Electrical safety precautions ..............2 Introduction to the manual Contents of this chapter ................Applicability ..................
6 Table of contents Validation of the safety functions ............... Competence ................... Validation procedure ................Acceptance test reports ..............Start-up and acceptance test ..............7 Maintenance Contents of this chapter ................Safety circuit maintenance ..............Proof test interval ................. Competence ..................Residual risk ..................
Safety instructions 7 Safety instructions Contents of this chapter This chapter contains the safety instructions which you must obey when you install, operate and do maintenance on the safety functions of a drive. Use of warnings and notes Warnings tell you about conditions which can cause injury or death, or damage to the equipment.
8 Safety instructions Only a qualified electrician who has appropriate knowledge on functional, machine, and process safety is allowed to install, start up and maintain the safety circuit. All user-made changes are on the user's responsibility. WARNING! This safety function does not disconnect the voltage of the main and auxiliary circuits from the drive.
Safety instructions 9 • Disconnect any dangerous external voltages from the control circuits. • After you disconnect power from the drive, always wait 5 minutes to let the intermediate circuit capacitors discharge before you continue. 3. Protect any other energized parts in the work location against contact. 4.
The manual applies to ACS880 air-cooled and liquid-cooled multidrives which have the option: Prevention of unexpected start-up with STO, with FSO (option +Q950). For the option +Q950, ABB installs the FSO-12 safety functions module (option +Q973) or the FSO-21 safety functions module (option +Q972) to the inverter units. When safety pulse encoders are used, ABB installs the FSE-31 pulse encoder interface module (option +L521) and the FSO-21 module to the inverter units.
Exclusion of liability ABB is not responsible for the implementation, verification and validation of the overall safety system. It is the responsibility of the system integrator (or other party) who is responsible for the overall system and system safety.
You can find manuals and other product documents in PDF format on the Internet. See Document Library. For manuals not available in the Document library, contact your local ABB representative. For additional ABB safety information and solutions visit http://www.abb.com/safety. Terms and abbreviations Term Description...
(option +Q972) for the Prevention of unexpected start-up (POUS) safety function. ABB installs the FSO modules to the inverter units and sets default parameter values for the option at the factory. The user installs and wires an operating switch and an indication lamp (optional) on site.
The digital input of the FSO module to which the POUS switch is connected, is selected as the input for the POUS request. This is an FSO module parameter that ABB sets at the factory. The user must check the setting at the start-up.
Option description 17 POUS indication delay (see parameter POUS.13): An additional security delay. The POUS completed indication (parameter POUS.22) becomes active after this delay. 1. The user stops the motor(s). 2. After the motor(s) have stopped, the user switches the POUS switch off (open). The FSO module activates the inverter unit STO function.
Option description 19 the inverter unit STO function. The inverter unit STO function is active until the fault has been repaired. The FSO module goes into Fail-safe mode. The STATUS/FAULT LED of the FSO module is red until the fault has been repaired. To exit the Fail-safe mode, remove the cause of the fault and reset the FSO module by switching the power off and on, by pressing the Boot FSO button on the Safety view of Drive composer pro or with inverter unit parameter 96.09 FSO reboot.
20 Option description Index Name Example value Description FSOGEN.22 Motor nominal fre- 50 Hz Sets the nominal motor frequency. Adjust quency the default value to meet the ratings of the motor in use. FSOGEN.41 Power-up acknow- Automatic Sets the power-up acknowledgement ledgement method of the FSO module.
STO function. SAR0 parameters define the deceleration ramp (for more in- formation, see the FSO module user’s manual). For the +Q950 option, ABB has set this parameter to value Immediate STO at the factory. Adjust the default value when ne- cessary.
POUS.11 POUS input DI X113:3&X114:3 Sets the digital input that is connected to the POUS input. For the option +Q950, ABB has configured the POUS request signal to these digital inputs at the factory. POUS.13 POUS delay for 0 ms...
Active high: The digital output is on when the indicated signal is active. For the option +Q950, ABB has configured the POUS indication signal to this digital output at the factory. Note: The following indications are generated when POUS is activated: AA97 FSO POUS request warning and 7A97 FSO premature POUS fault.
22, 23 27, 28, 29, 30 ABB installs the FSO modules and the wirings between the FSO modules and the inverter units and user interface at the factory. The FSO module has double terminals for the connection of the POUS switch. Wire the POUS switch to the terminals according to the circuit diagrams of the delivery.
Note: If you change the input and the parameter settings in the FSO module into a one-channel implementation, it affects the safety integrity of the safety function. The safety data that ABB has calculated for the function is not valid. 3. Use shielded, twisted pair cables. We recommend a double-shielded cable and gold-plated contacts in the POUS switch.
No manual reset is necessary after you have deactivated the POUS function. The reset method for the POUS function is set to automatic by ABB. However, you must reset the inverter units if they have tripped on a fault at the activation of the POUS function. The reaction of the inverter units depends on the parameter settings.
Start-up and acceptance test 29 Start-up and acceptance test Contents of this chapter This chapter describes the start-up, acceptance test procedure, and validation of the safety function. Validation of the safety functions You must do an acceptance test (validation) to validate the correct operation of safety functions.
30 Start-up and acceptance test • you must sign and store the acceptance test report for further reference. ￭ Acceptance test reports You must store the signed acceptance test reports in the logbook of the machine. The report must include, as required by the referred standards: •...
Start-up and acceptance test 31 Action Save the FSO safety file (button Save safety file in the Drive composer pro PC tool). Note: The FSO safety file is not included in the drive backup process. Acceptance test We recommend that you monitor these signals with the Drive composer PC tool: •...
If you change any wiring or component after the start-up, replace the FSO or FSE-31 module, modify FSO module parameters, or restore parameters to their factory default values: • Use only ABB-approved spare parts. • Register the change to the change log for the safety circuit.
34 Maintenance The person responsible for the design of the complete safety system should also note the Recommendation of Use CNB/M/11.050 published by the European co-ordination of Notified Bodies for Machinery concerning dual-channel safety-related systems with electromechanical outputs: • When the safety integrity requirement for the safety function is SIL 3 or PL e (cat. 3 or 4), the proof test for the function must be performed at least every month.
R10 and R11 and drives with R8i inverter modules: type B. ￭ Safety block diagrams Each multidrives delivery is unique. If included in the customer order, ABB defines the safety block diagram for the safety function and delivers the diagram separately to the customer.
36 Technical data ￭ Relevant failure modes Relevant failure modes are: • the FSO module detects any open circuits, short circuits and redundancy failures of the POUS input signal wirings. Similarly, it detects redundancy failures of the POUS switch when the POUS request is on. •...
Technical data 37 Standard Name EN 62061:2005 Safety of machinery – Functional safety of safety-related electrical, electronic and pro- grammable electronic control systems + AC:2010 + A1:2013 + A2:2015 IEC 62061:2015 Ed. 2006/42/EC European Machinery Directive Other Machine-specific C-type standards Compliance with the European Machinery Directive The drive is an electronic product which is covered by the European Low Voltage Directive.
Product and service inquiries Address any inquiries about the product to your local ABB representative, quoting the type designation and serial number of the unit in question. A listing of ABB sales, support and service contacts can be found by navigating to www.abb.com/searchchannels.