Table of Contents
Advertisement
3.WIRING
3-5 Power supply circuit
CAUTION
(1) Power-on sequence
1) Always wire the power supply as shown below using magnetic contactors with the main cir-
cuit power supply (three-phase 200V: L1, L2, L3; single-phase 230V: L1, L2; single-phase
100V: L1, L2).
2) Switch on the control circuit power supply L11, L21 simultaneously with the main circuit
power supply or before switching on the main circuit power supply. If the main circuit power
supply is not on, the display shows the corresponding warning. However, by switching on the
main circuit power supply, the warning disappears and the servo amplifier will operate prop-
erly.
3) The servo amplifier can accept the servo-on signal (SON) about 1 second after the main
circuit power supply is switched on. Therefore, when SON is switched on simultaneously with
the three-phase power supply, the base circuit will switch on in about 1 second, and the
ready signal (RD) will switch on in further about 20ms, making the servo amplifier ready to
operate. (Refer to paragraph (2) in this section.)
4) When the reset signal (RES) is switched on, the base circuit is shut off and the servo motor
shaft coasts.
5) For the structure of the external circuit, refer to Section 2-1.
(2) Connection example
Wire the power supply and main circuits as shown below. A no-fuse breaker (NFB) must be
used with the input cables of the power supply. Immediately after the occurrence of alarm is
detected and the power supply is cut out, the servo ON signal must be turned off.
For single-phase 100V
NFB
Single-phase AC
100~120V
(Note) Three-phase
200 to 230AC
Single-phase
230VAC
Note: When using a power supply of 230VAC, single
phase, connect it to L1 and L2 terminals, but do not
connect anything to L3 terminal.
1. When the servo amplifier has become faulty, switch power off on the
servo amplifier power side. Continuous flow of a large current may cause
a fire.
2. Use the trouble signal to switch power off. Otherwise, a regenerative
brake transistor fault or the like may overheat the regenerative brake
resistor, causing a fire.
MR–J2–
A1
MC
L1
L2
L11
L21
NFB
or
Emergency
stop Servo on
Trouble
3– 57
External
OFF
emergency stop
RA
MC
L1
Servo amplifier
MR-J2- A
L2
L3
L11
L21
EMG
SON
SG
VDD
COM
ALM
RA
ON
MC
MC
SK
3
Advertisement
Table of Contents
