Mitsubishi Electronics MR-J2S- A instruction manual Speed limit, RS1 RS2, Ccw

3. SIGNALS AND WIRING

(b) Analog torque command offset

Using parameter No. 30, the offset voltage of 999 to 999mV can be added to the TC applied voltage as shown below.

Max. torque
torque
Generated		Parameter No.30 offset range
		999 to	999mV
0	8(	8)
	TC applied voltage [V]

(2)Torque limit

By setting parameter No. 28 (internal torque limit 1), torque is always limited to the maximum value during operation. A relationship between limit value and servo motor-generated torque is as in (5) in section 3.4.1. Note that the analog torque limit (TLA) is unavailable.

(3)Speed limit

(a) Speed limit value and speed

The speed is limited to the values set in parameters No. 8 to 10, 72 to 75 (internal speed limits 1 to 7) or the value set in the applied voltage of the analog speed limit (VLA).

A relationship between the analog speed limit (VLA) applied voltage and the servo motor speed is shown below.

When the motor speed reaches the speed limit value, torque control may become unstable. Make the set value more than 100r/m greater than the desired speed limit value.

	Rated speed
Speed [r/min]		CCW direction
10
	0	10
CW direction	VLA applied voltage [V]
	Rated speed

Forward rotation (CCW)

Reverse rotation (CW)

The following table indicates the limit direction according to forward rotation selection (RS1) and reverse rotation selection (RS2) combination:

(Note) External input signals			Speed limit direction
RS1	RS2	Analog speed limit (VLA)			Internal speed
		Polarity		Polarity	commands
1	0	CCW		CW	CCW
0	1	CW		CCW	CW

Note.0: RS1/RS2-SG off (open) 1: RS1/RS2-SG on (short)

Generally, make connection as shown below:

Servo amplifier

		SP1
		SP2
		SG
	2k	P15R
2k		VC
Japan resistor		LG
		SD
RRS10 or equivalent
	3 -	31