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2. OPERATION
Class No. Symbol
23
FFC
Feed forward gain:
Used to set the feed forward gain in position control.
By setting 100% for constant-speed operation, droop
pulses will not be generated. Note that sudden acceler-
ation/deceleration will increase overshoot. (As a guid-
eline, acceleration/deceleration time to/from rated speed
is 1s or longer when the set value is 100.)
MEMORANDUM
24
ZSP
Zero speed:
Used to set the output range of the zero speed signal (ZSP).
25
VCM
Analog speed command maximum speed:
Used to set the speed at the maximum input voltage
(10V) of the analog speed command (VC).
When it is set to 0, the speed comes to the rated
speed of the servo motor connected.
Analog speed limit maximum speed:
Used to set the speed at the maximum input voltage
(10V) of the analog speed limit (VLA).
When it is set to 0, the speed comes to the rated
speed of the servo motor connected.
26
TLC
Analog torque command maximum output:
Used to set the output torque at the analog torque
command voltage (TC=±8V) of +8V on the assumption
that the maximum torque is 100[%]. For example, set
50 to output (maximum torque x 50/100) at the TC of
+8V.
27
*ENR
Encoder output pulses:
Used to set the number of output pulses per encoder
revolution output by the servo amplifier.
28
TL1
Internal torque limit 1:
Set this parameter to limit servo motor-generated torque
on the assumption that the maximum torque is 100[%].
When 0 is set, torque is not produced.
When analog monitor output is used to output torque,
this set value is the maximum output voltage (+8V).
Internal torque limit 1:
Set this parameter to limit servo motor-generated torque
on the assumption that the maximum torque is 100[%].
When 0 is set, torque is not produced.
Across TL-SG
Open
Short
When analog monitor output is used to output torque, this
set value is the maximum output voltage (+8V).
Name and Function
When setting this parameter,
always set auto tuning to "No"
(parameter No. 2).
Torque Limit
Internal torque limit 1 (Parameter No. 28)
Torque limit relationship
Analog torque limit < internal torque limit 1
Analog torque limit > internal torque limit 1
2– 43
Initial
Unit
Value
%
0
r/min
50
0
r/min
0
r/min
%
100
pulse
4000
%
100
Valid torque limit
Analog torque limit
Internal torque limit 1
Control
Setting
Range
Mode
0 to 100
P
0 to 10000 P • S • T
0
S
1 to 10000
0
T
1 to 10000
0 to 1000
T
5 to 16384 P • S • T
0 to 100
T
P • S
2
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