Fuji Electric ALPHA7, User Manual

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CHAPTER 2 WIRING
Configuration
2-5
2
2.1.2 Configuration
The figure on page 2-6 shows the general configuration of devices. There is no need to connect all
devices.

The size on each device in the figure is not drawn at the uniform scale. (same as other chapters)

To supply single-phase power to the servo amplifier, use the L1 and L2 terminals.
Supply power control power terminals L1C and L2C is required.

Wiring connectors TB1 and TB2 are provided with the servo amplifier.

Adopt a configuration for turning the main power off upon alarm detection (activation of protective
function of servo amplifier).
Otherwise overheat of the regenerative resistor, such as regenerative resistor transistor failure may
cause fire.

The maximum wiring length between the servo amplifier and servomotor is 50 [m].

You may not turn the power wiring of the servo amplifier or servomotor on or off with a contactor or
you may not drive multiple servomotors selectively with a single servo amplifier.

Do not connect any of the following devices to the power wiring of the servo amplifier or servomotor.
・
Phase advancing capacitor
・
Various reactors
・
Noise filter
・
Surge absorber

Be sure to ground the protective ground terminal of the servo amplifier (terminal provided with a
grounding mark) to the protective ground of the control panel to avoid electric shock.
 Use the accessory tool in the following procedure to connect the terminal to TB1 and TB2.

Wiring method
Connect wiring with connectors disconnected from the servo amplifier.
Peel off the wiring sheath to ensure the
following dimensions.
TB1: L = 8 to 9 mm
TB2: L = 9 to 10 mm
Insert the tip of the accessory tool into the
top of the connector.
Push the tool toward the connector to insert the
cable.
Release the tool. The cable is fixed.
Do not solder the cable. In case of the strand wire, do not twist cable forcibly.
L