Delta BLD-E1 brushless DC motor drive BLD-E1 Series - Manual (Page 27)

Chapter 2 Installation and Wiring| BLD-E1 Series
2-8 Revision May 2009, 00DE, V0.50
„ When using a general GFCI (Ground Fault Circuit Interrupter), select a current sensor
with sensitivity of 200mA or above, and not less than 0.1-second operation time to avoid
nuisance tripping. For the specific GFCI of the brushless DC motor drive, please select a
current sensor with sensitivity of 30mA or above.
Output terminals for main circuit (U, V, W)
„ The factory setting of the operation direction is forward running.
„ When it needs to install the filter at the output side of terminals U/T1, V/T2, W/T3 on the
brushless DC motor drive. Please use inductance filter. Do not use advanced capacitors
or L-C (Inductance-Capacitance) or R-C (Resistance-Capacitance), unless approved by
Delta.
„ DO NOT connect advanced capacitors or surge absorbers at the output terminals of
brushless DC motor drives.
„ Use well-insulated motor, suitable for drive operation.
„ When using a general GFCI (Ground Fault Circuit Interrupter), select a current sensor
with sensitivity of 200mA or above, and not less than 0.1-second operation time to avoid
nuisance tripping. For the specific GFCI of the brushless DC motor drive, please select a
current sensor with sensitivity of 30mA or above.
Terminals [+, -] for connecting brake resistor
„ Connect a brake resistor or brake unit in applications with frequent decelerations, short
deceleration time, insufficient brake torque or requiring increased brake torque.
„ When using external brake unit, please connect it to the terminals [+, -]. Please do NOT
connect brake resistors to terminals [+, -] directly, as it may cause damage.
„ All BLD-E1 series don’t have a built-in brake chopper. Please connect an external
optional brake unit (BUE-series) and brake resistor.
„ When not used, please leave the terminals [+, -] open.