Nidec Digitax ST Series Installation Manual

Nidec Digitax ST Series Installation Manual Manual pdf 9 page image

Safety Information Introduction Mechanical Installation Electrical Installation UL Listing InformationDigitax ST Installation Guide 9Issue: 7All machinery to be supplied within the European Union in which this product is usedmust comply with the following directives:2006/42/EC Safety of machinery.2014/30/EU: Electromagnetic Compatibility.1.5 Electrical hazardsThe voltages used in the drive can cause severe electrical shock and/or burns, andcould be lethal. Extreme care is necessary at all times when working with or adjacent tothe drive. Hazardous voltage may be present in any of the following locations:• AC and DC supply cables and connections• Output cables and connections• Many internal parts of the drive, and external option unitsUnless otherwise indicated, control terminals are single insulated and must not betouched.The supply must be disconnected by an approved electrical isolation device beforegaining access to the electrical connections.The STOP and Safe Torque Off functions of the drive do not isolate dangerous voltagesfrom the output of the drive or from any external option unit.The drive must be installed in accordance with the instructions given in this guide.Failure to observe the instructions could result in a fire hazard.1.6 Stored electrical chargeThe drive contains capacitors that remain charged to a potentially lethal voltage after theAC supply has been disconnected. If the drive has been energized, the AC supply mustbe isolated at least ten minutes before work may continue.1.7 Mechanical hazardsCareful consideration must be given to the functions of the drive or controller whichmight result in a hazard, either through their intended behaviour or through incorrectoperation due to a fault. In any application where a malfunction of the drive or its controlsystem could lead to or allow damage, loss or injury, a risk analysis must be carried out,and where necessary, further measures taken to reduce the risk - for example, an over-speed protection device in case of failure of the speed control, or a fail-safe mechanicalbrake in case of loss of motor braking.With the sole exception of the Safe Torque Off function, none of the drivefunctions must be used to ensure safety of personnel, i.e. they must not be usedfor safety-related functions.The Safe Torque Off function may be used in a safety-related application. The systemdesigner is responsible for ensuring that the complete system is safe and designedcorrectly according to the relevant safety standards.The design of safety-related control systems must only be done by personnel with therequired training and experience. The Safe Torque Off function will only ensure thesafety of a machine if it is correctly incorporated into a complete safety system. Thesystem must be subject to a risk assessment to confirm that the residual risk of anunsafe event is at an acceptable level for the application.1.8 Access to equipmentAccess must be restricted to authorized personnel only. Safety regulations which applyat the place of use must be complied with.