
B–64113EN–1/01
2. PREPARATIONS FOR OPERATION
190
While the servo speed check enable signal (G0349) is set to 1, the CNC
checks the servo speed and compares the servo speed with the value set
in parameter No. 12291. If the servo speed is lower than the value set in
the parameter, the servo under–speed alarm signal (F0349) is output on
an axis–by–axis basis. At this time, the servo alarm (616) is issued if bit
1 (SSA) of parameter No. 12290 is set to 1.
D This function is usable with a servo axis.
D If this function is used during simple synchronous control, the speed
of the master axis is compared with the speed set for the master axis,
and the speed of the slave axis is compared with the speed set for the
slave axis. So, when this function is used during simple synchronous
control, the speed (No. 12291) and the servo speed check enable signal
(G0349) need to be set in the same way.
D While the servo speed check enable signal (G0349) is input, this
function makes a speed check at all times. So, even if the speed
decreases below the allowable level due to deceleration, for example,
at the end of a block, the servo under–speed alarm signal (F0349) is
output (together with a servo alarm, depending on parameter setting).
To prevent this, measures for disabling servo speed checking at a joint
of blocks need to be taken.
[Classification] Input signal (G)
[Function] Enables the servo speed check function for each axis.
When this signal is set to 1, the servo speed is monitored.
When this signal is set to 0, the servo speed is not monitored.
[Classification] Output signal (F)
[Function] This signal is set to 1 when the servo speed is lower than the value set in
parameter No. 12291 and the servo speed check enable signal (G0349) is
set to 1.
This signal is set to 0 when the servo speed is higher than the value set in
parameter No. 12291 or when the servo speed is lower than the set value
but the servo speed check enable signal is not set to 1.
2.10
SERVO SPEED
CHECK
General
Notes
Signal
Servo speed check
enable signal
SVSCK1 to SVSCK8
<G0349>
Servo under–speed
alarm signal
TSA1 to TSA8
<F0349>