
B--65245EN/02
B. PARAMETERSAPPENDIXES
207
108 Servo motor torque limit
Size : 2 bytes
Valid data range : 0 to 7282
Standard setting :0
Applying a torque limit to the servo motor enables positioning in
reference to a mechanical stopper. Setting bit 2 of parameter No. 10
(IEBL) validates a torque limit based on this parameter. If 0 is specified
for this parameter, 100% (7282) is assumed. Calculate the necessary
setting, using:
Value in parameter No. 108 = t orque limit value [%]×
7282
100
109 Backlash amount (BKLCMP)
Size : 2 bytes
Unit : User unit
Valid data range : 0 to 32767 (detection increment)
Standard setting :0
The parameter sets up a backlash amount (User unit). The range will be
in the detection increment resulting from m ultiplying the user unit by the
command multiplier (parameter No. 032).
110 Positional deviation limit value at a stop
Size : 2 bytes
Valid data range : 0 to 32767
Standard setting : 500
This parameter sets a positional deviation limit value used when the motor
is at a stop (detection increment). Alarm 410 is raised if the positional
deviation limit is exceeded when the motor is at a stop.
111 In--position width
Size : 2 bytes
Valid data range : 0 to 32767
Standard setting :10
If the positional deviation becomes lower than the value specified in this
parameter after the related block ends, an in--position signal is returned
to the host.
116 Velocity loop gain override during velocity control (%)
Size : 2 bytes
Standard setting : 0 (overriding not performed)
Set this parameter if the system is switched between position control and
velocity control.
When the system enters velocity control mode, the velocity loop
proportional gain and the integral gain that are used in position control are
multiplied by the above override.
The relationships among the velocity loop proportional gain, integral
gain, l oad inertia ratio, and the velocity loop gain override during velocity
control are explained using the following example: