Instruction manual

4 - 2
4. SIGNALS AND WIRING
4.1 Precautions on this Chapter
The following items are not described in this chapter. For details of these items, refer to the MR-J3-
B Servo
Amplifier Instruction Manual as they are the same as those of MR-J3-
B.
item MR-J3- B Servo Amplifier Instruction Manual
Explanation of Power Supply System Section 3.3
Signal (device) explanations Section 3.5
Interfaces Section 3.7 (excluding the internal connection diagram)
Processing of cable shield external
conductor
Section 3.8
SSCNET cable connection Section 3.9
Control axis selection Section 3.13
4.2 Power Supply System Circuit Connection Example
CAUTION
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.
Use the trouble signal to switch main circuit power supply off. Otherwise, a
regenerative brake transistor fault or the like may overheat the regenerative brake
resistor, causing a fire.
POINT
Even if alarm has occurred, do not switch off the control circuit power supply.
When the control circuit power supply has been switched off, optical module
does not operate, and optical transmission of SSCNET
communication is
interrupted. Therefore, the servo amplifier on the rear axis displays "AA" at
the indicator and turns into base circuit shut-off. The servo amplifier stops
with starting dynamic brake.
For details of each signal, refer to Section 3.3 of the MR-J3- B Servo
Amplifier Instruction Manual.
Wire the power supply/main circuit as shown below so that power is shut off and the servo-on command turned
off as soon as an alarm occurs, a servo forced stop is made valid, or a controller forced stop is made valid. A
no-fuse breaker (NFB) must be used with the input cables of the main circuit power supply.
Table 4.1 indicates the wire sizes which are used for wiring.
The wires used assume that they are 600V vinyl wires and the wiring distance is 30m max. If the wiring
distance is over 30m(98.4ft), choose the wire size in consideration of voltage drop.
Table 4.1 Recommended wires
Wire [mm
2
]
Servo Amplifier
L
1
L
2
L
3
L
11
L
21
U
V W PC THM1 THM2
MR-J3-40B-RJ004
MR-J3-70B-RJ004
2(AWG16) 1.25(AWG16)
MR-J3-200B-RJ004 3.5(AWG12) 3.5(AWG12)
MR-J3-350B-RJ004 5.5(AWG10) 5.5(AWG10)
MR-J3-500B-RJ004 5.5(AWG10) (Note)
1.25(AWG16)
5.5(AWG10) (Note)
2(AWG14) 0.2(AWG24)
Note. Use the following crimping terminal and applicable tool.
Crimping terminal:32968 Applicable tool:59239 (Tyco Electronics)