Phase AxN 70.140.4, Руководство по установке

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Step 2: Shortcut DC+ and Brk+
Use a 3mm hexagonal wrench to loosen the hexagonal screws on DC+ and Brk+ Terminals which
are in the drive’s Power Supply Input Port (P1). Then, use a wire to shortcut DC+ and
Brk+.
NOTE: The metal part of the shortcut wire should be fully inserted into corresponding terminals.
Leave only the insulated part outside.
Step 3: Tight the Terminals
Use a 3mm hexagonal torque wrench to tight the hexagonal screws on DC+ and Brk+ Terminals .The
nominal torque to tight these terminals is 4.0 ~ 4.5Nm. If the tight torque reaches higher than
8.5Nm, the terminal will be broken.
2.3.3 External Brake Resistor
The External Brake Resistor must be sized properly in order to dissipate the required power to
decelerate the load in desired time. There are three important factors: Resistance, Maximum
Absorb Energy and Maximum Power.
Resistance
The selection of the external brake resistor resistance must be proper. If the resistance is smaller
than Minimum Resistance, the IGBT might be damaged by the overload brake current. And if the
resistance is bigger than Maximum Resistance, the brake procedure might be abort because of the
high DC-Bus Voltage (over 900V).
Refer to following table to check the Minimum and Maximum Resistance of external brake resistor
which is suitable for a particular drive:
AxN Size4 Minimum
Resistance (Ω
) Maximum Resistance
(Ω
)
AxN 70.140.4 2.1 4
Maximum Absorb Energy and Maximum Power
Maximum Absorb Energy and Maximum Power are two important factors to evaluate the energy
absorption ability of the brake resistor. The values of these two factors may differ from one