Hitachi BRD-E2-30K Operation Manual page 5

2. Wiring
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Always connect the grounding wire to the dynamic braking unit to prevent electric
shock or fire.
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All wiring should be done by a qualified electrician or electric shock or fire may occur.
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Before wiring, make sure the supply power is off (or the P-N voltage is 45 V or less) to
prevent electric shock or fire.
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Always install the dynamic braking unit on the wall before wiring to prevent electric
shock and personal injury.
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Be sure to provide a thermal relay and a circuit, which shuts off primary power to the
inverter. This is to prevent burning-out the external resistor due to overheating if the
dynamic braking unit malfunctions.
For actual connections, see 4.3 and 4.4.
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Make sure the voltage rating of the dynamic braking unit is equal to that of the inverter
to prevent fire and personal injury.
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Do not connect resistors directly to the D.C. terminals (P and N) or fire may occur.
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Tighten screws at their correct specified torque (see table on right). Make sure every
screw is firmly tightened or fire may occur.
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The power cables should be MLFC flame-retardant poly-flex wire, allowing a voltage
of 600 V and capable of the specified amperage or fire may occur.
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DANGER
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Title: (Triangle.eps)
CAUTION
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