Nidec Digistart D2 User Manual

Contents

Nidec Digistart D2 User Manual Manual pdf 5 page image

1.7 Electrical Installation1.7.1 Electrical shock riskThe voltages present in the following locations can cause severe electric shock and may be lethal:• AC supply cables and connections• Output cables and connections• Many internal parts of the starter, and external option unitsThe AC supply must be disconnected from the starter using an approved isolation device before anycover is removed from the starter or before any servicing work is performed.1.7.2 Power-up procedureWARNINGAlways apply control voltage before (or with) mains voltage.After transportation, mechanical shock or rough handling there is a possibility that the bypass contactormay have latched into the on state. To prevent the possibility of the motor starting immediately, on firstcommissioning or operation after transportation, always ensure that the control supply is applied beforethe power, so that the contactor state is initialised.1.7.3 STOP functionThe STOP function does not remove dangerous voltages from the starter, the motor or any externaloption units.1.7.4 Equipment supplied by plug and socketThe control supply terminals of the starter are connected to the internal capacitors through rectifier diodeswhich are not intended to give safety isolation. If the plug terminals can be touched when the plug isdisconnected from the socket, a means of automatically isolating the plug from the starter must be used(e.g. a latching relay).1.7.5 Short circuitThe Digistart D2 is not short circuit proof. After severe overload or short circuit, the operation of theDigistart D2 should be fully tested by an authorised service agent.Digistart D2: User Guide 5Issue: F