Mitsubishi Electric MELSERVO-J2 Series Instruction Manual page 40

3. SIGNALS AND WIRING
Note: 1. To prevent an electric shock, always connect the protective earth (PE) terminal of the servo
amplifier to the protective earth (PE) of the control box.
2. Connect the diode in the correct direction. If it is connected reversely, the servo amplifier will be
faulty and will not output signals, disabling the emergency stop and other protective circuits.
3. The emergency stop switch must be installed.
4. CN1A, CN1B, CN2 and CN3 have the same shape. Wrong connection of the connectors will lead
to a fault.
5. The sum of currents that flow in the external relays should be 80mA max. If it exceeds 80mA,
supply interface power from external.
6. When starting operation, always connect the forward/reverse rotation stroke end (LSN/LSP) with
SG. (Normally closed contacts)
7. Trouble (ALM) is connected with COM in normal alarm-free condition.
8. The connection method changes with the servo motor series.
Refer to Section 3.3.
9. The pins with the same signal name are connected in the servo amplifier.
10. A single-phase 230V power supply may be used with the servo amplifier of MR-J2-70C or less.
However, it cannot be used when the servo amplifier is combined with the HC-SF52/53 servo
motor. Connect the power supply to L1 and L2 terminals and leave L3 open.
11. When using override (VC), make the override selection (OVR) device available.
12. When using analog torque limit (TLA), make the external torque limit selection (TL) devices
available.
13. Connect to CN1A-10 when using the junction terminal block (MR-TB20).
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