Mitsubishi Electronics MR-J2S- A Torque limit, Tla, Parameter No Parameter No, Parameter No TLA

3. SIGNALS AND WIRING

(5)Torque limit

(a)Torque limit and generated torque

By setting parameter No. 28 (internal torque limit 1), torque is always limited to the maximum value during operation. A relationship between the limit value and servo motor-generated torque is shown below.

Max. torque
Generated torque
00	100
	Torque limit value [%]

A relationship between the applied voltage of the analog torque limit (TLA) and the torque limit value of the servo motor is shown below. Generated torque limit values will vary about 5% relative to the voltage depending on products.

At the voltage of less than 0.05V, generated torque may vary as it may not be limited sufficiently. Therefore, use this function at the voltage of 0.05V or more.

[%]	100				Servo amplifier
value					TL
limit		5%			SG
Torque				2k	TLA
				2k	P15R
	0	0.05
	0		10	Japan resistor	LG
	TLA application voltage [V]			RRS10 or equivalent	SD
	TLA application voltage vs.
		torque limit value

(b)Torque limit value selection

Choose the torque limit made valid by the internal torque limit value 1 (parameter No. 28) using the external torque limit selection (TL) or the torque limit made valid by the analog torque limit (TLA) as indicated below.

When internal torque limit selection (TL1) is made usable by parameter No. 43 to 48, internal torque limit 2 (parameter No. 76) can be selected. However, if the parameter No. 28 value is less than the limit value selected by TL/TL1, the parameter No. 28 value is made valid.

(Note) External input signals			Torque limit value made valid
TL1	TL
0	0	Internal torque limit value 1 (parameter No. 28)
0	1	TLA	Parameter No. 28: Parameter No. 28
			TLA	Parameter No. 28: TLA
1	0	Parameter No. 76		Parameter No. 28: Parameter No. 28
		Parameter No. 76 Parameter No. 28: Parameter No. 76
1	1	TLA	Parameter No. 76: Parameter No. 76
			TLA	Parameter No. 76: TLA

Note.0: TL/TL1-SG off (open)

1:TL/TL1-SG on (short)

(c)Limiting torque (TLC)

TLC-SG are connected when the torque generated by the servo motor reaches the torque set to internal torque limit value 1 or analog torque limit.

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