Mitsubishi Electric MR-E A Series Instruction Manual page 267

15. MR-E-
2) Analog torque command offset
Using parameter No. 30, the offset voltage of
voltage as shown below.
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(b) 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 (1)(c)
in this section. Note that the analog torque limit (TLA) is unavailable.
(c) Speed limit
1) 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/m greater than the desired speed limit value.
The following table indicates the limit direction according to forward rotation selection (RS1)
and reverse rotation selection (RS2) combination:
Note.0: off
Generally, make connection as shown below:
AG SERVO AMPLIFIER COMPATIBLE WITH ANALOG INPUT
Max. torque
0
TC applied voltage [V]
Rated speed
Speed [r/min]
10
0
CW direction
VLA applied voltage [V]
Rated speed
(Note) External input signals
RS1 RS2
1 0
0 1
1: on
2k
Japan resistor
RRS10 or equivalent
999 to 999mV can be added to the TC applied
Parameter No.30 offset range
999 to 999mV
8( 8)
Forward rotation (CCW)
CCW direction
10
Analog speed limit (VLA)
Polarity
CCW
CW
Servo amplifier
SP1
SP2
SG
P15R
2k
VC
LG
SD
15 - 22
Reverse rotation (CW)
Speed limit direction
Polarity
CW
CCW
Internal speed
commands
CCW
CW