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4. WIRING AND FUNCTION SETTING
4.1
Wiring Notices
Title: (Danger.eps)
Creator: Adobe Illustrator(TM) 7.0
CreationDate: (1/26/0) (5:10 PM)
DANGER
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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 single resistor due to overheating
if the dynamic braking unit malfunctions.
For actual connections, see 4.3 and 4.4.
Title: (Triangle.eps)
Creator: Adobe Illustrator(TM) 5.5
CreationDate: (98.4.21) (9:42)
CAUTION
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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.
Notes:
1. Be sure to provide alarm contacts (AL1 and AL2) and a circuit, which shuts off
primary power to the inverter to prevent overheating and burning if the dynamic
braking unit malfunctions.
Screw size
Tightening
torque (N.m)
M3
0.6 to 0.9
M5
2.8 to 3.9
M8
10 to 13.5
M10
21 to 28
