Bose MR-J2S- B instruction manual Grounding, Signals And Wiring

3. SIGNALS AND WIRING

3.8 Grounding

Ground the servo amplifier and servo motor securely.

WARNING To prevent an electric shock, always connect the protective earth (PE) terminal of the servo amplifier with the protective earth (PE) of the control box.

The servo amplifier switches the power transistor on-off to supply power to the servo motor. Depending on the wiring and ground cablerouting, the servo amplifier may be affected by the switching noise (due to di/dt and dv/dt) of the transistor. To prevent such a fault, refer to the following diagram and always ground.

To conform to the EMC Directive, refer to the EMC Installation Guidelines (IB(NA)67310).

(Note 1)	NFB
Power supply
3-phase
200 to 230VAC,
1-phase
230VAC or
1-phase
100 to 120VAC

Line filter

Control box

MC Servo amplifier			CN2
	L1
	L2
	L3
	L11	U
	L21

V

W

CN1A

(Note 2)

Servo system controller

	Outer
Protective earth(PE)	box

Servo motor

Encoder

U

V SM

W

Ensure to connect it to PE terminal of the servo amplifier. Do not connect it directly

to the protective earth of the control panel.

Note: 1. For 1-phase 230VAC, connect the power supply to L1 L2 and leave L3 open. There is no L3 for 1-phase 100 to 120VAC power supply.

2.To reduce the influence of external noise, we recommend you to ground the bus cable near the controller using a cable clamping fixture or to connect three or four data line filters in series.

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