Mitsubishi Electric MR-J2S-A Instruction Manual page 79

3. SIGNALS AND WIRING
(b) Analog torque command offset
Using parameter No. 30, the offset voltage of
voltage as shown below.
(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 torque is as in section 3.4.1 (5).
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 servo motor speed reaches the speed limit value, torque control may become unstable.
Make the set value more than 100r/min greater than the desired speed limit value.
Speed [r/min]
10
CW direction
The following table indicates the limit direction according to forward rotation selection (RS1) and
reverse rotation selection (RS2) combination.
(Note) External input signals
RS1
1
0
Note. 0: off
1: on
Generally, make connection as shown below.
Max. torque
0
TC applied voltage [V]
Rated speed
CCW direction
0 10
VLA applied voltage [V]
Rated speed
RS2
Polarity
0 CCW
1 CW
2k
2k
Japan resistor
RRS10 or equivalent
3 - 32
WWW.NNC.IR
999 to 999mV can be added to the TC applied
Parameter No.30 offset range
999 to 999mV
8( 8)
Forward rotation (CCW)
Reverse rotation (CW)
Speed limit direction
Analog speed limit (VLA)
Polarity
CW
CCW
Servo amplifier
SP1
SP2
SG
P15R
VC
LG
SD
Internal speed
commands
CCW
CW