8.4 Installing Peripheral DevicesThis section describes the proper steps and precautions to take when installing or connecting various peripheral devices to thedrive.Refer to peripheral device manual for detailed installation instructions.NOTICE: Use a class 2 power supply (UL standard) when connecting to the control terminals. Improper application of peripheral devicescould result in drive performance degradation due to improper power supply.u Installing a Molded Case Circuit Breaker (MCCB) and Earth Leakage Circuit Breaker(ELCB)Install an MCCB or ELCB for line protection between the power supply and the main circuit power supply input terminals R/L1, S/L2 and T/L3. This protects the main circuit and devices wired to the main circuit while also providing overload protection.Consider the following when selecting and installing an MCCB or ELCB:• The rated current of the MCCB or ELCB should be 1.5 to 2 times the rated output current of the drive. Use an MCCB orELCB with operation characteristics that do not trip the MCCB or ELCB faster than the drive overload protection (shuts offthe drive after 1 minute of operation at 150% of the drive rated current).• If several drives are connected to one MCCB or an ELCB that is shared with other equipment, use a sequence that shuts thepower OFF when errors are output by using magnetic contactor (MC) as shown in the following figure.DrivePowerSupplyR/L1MBMCCB MCMCMCMCS/L2T/L3SAFigure 8.2 Connecting an MCCBWARNING! Electrical Shock Hazard. Disconnect the MCCB (or ELCB) and MC before wiring terminals. Failure to comply may result inserious injury or death.u Application Precautions when Installing a GFCIDrive outputs generate high-frequency leakage current as a result of high-speed switching. Install a GFCI on the input side ofthe drive to switch off potentially harmful leakage current.Factors in determining leakage current:• Size of the AC drive• AC drive carrier frequency• Motor cable type and length• EMI/RFI filterIf the GFCI trips spuriously, consider changing these items or use a GFCI with a higher trip level.Note: Choose a GFCI designed specifically for an AC drive. The operation time should be at least 0.1 s with sensitivity amperage of at least 200mA per drive. The output waveform of the drive may cause an increase in leakage current. This may in turn cause the leakage breaker tomalfunction. Increase the sensitivity amperage or lower the carrier frequency to correct the problem.u Installing a Magnetic Contactorn Disconnecting the Power SupplyThe drive should be shut off in the case of a fault in external equipment such as braking resistors through use of a MagneticContactor (MC).8.4 Installing Peripheral DevicesYASKAWA ELECTRIC SIEP C710606 31B YASKAWA AC Drive – J1000 Technical Manual 1678 Peripheral Devices &Optionshttp://nicontrols.com
