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54
3 SIGNALS AND WIRING
3.3 Explanation of power supply system
3.3
Explanation of power supply system
Explanation of signals
• For the layout of connectors and terminal blocks, refer to the following.
L+/L- (Connection destination: Converter unit)
Connect them with L+ and L- of the converter unit.
Use the bus bar.
L11/L21 (Connection destination: Control circuit power supply)
Supply 1-phase 380 V AC to 480 V AC, 50 Hz/60 Hz power to L11 and L21.
U/V/W/E (Connection destination: Servo motor power supply/servo motor grounding
terminal)
Connect them to the servo motor power supply inputs (U/V/W) and servo motor grounding terminal (E). Do not connect
devices such as magnetic contactors between the motor and drive unit as this will lead to abnormal operation or malfunction.
(Connection destination: Protective earth (PE))
Connect this terminal to the protective earth (PE) of the cabinet.
Power-on procedure
Signals such as output signals may be unstable at power-on.
Power-on procedure
1.
Wire the power supply using a magnetic contactor between the power supply and the main circuit power supply (L1/L2/
L3) of a converter unit by referring to the following section. Switch off the magnetic contactor as soon as an alarm occurs.
Page 42 Example power circuit connections
2.
Switch on the control circuit power supply (L11 and L21) of the converter unit and drive unit simultaneously with the main
circuit power supply or before switching on the main circuit power supply. If the control circuit power supply is turned on
and the servo-on command is transmitted while the main circuit power supply is off, [AL. 0E9 Main circuit off warning] will
occur. Turning on the main circuit power supply stops the warning and starts the operation properly.
3.
When the main circuit power supply is switched on, the drive unit will receive the servo-on command after startup and
initial network communication. The startup time for 1-axis drive units is 2.5 s to 3.5 s, and the startup time for multi-axis
drive units is 3.5 s to 4.0 s.
Содержание MR-J5D
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