Vexta EMP400 Series Operating Manual page 136

10 10 10 10 10
Troubleshooting
Error message
Driver alarm. Alarm output from the driver turned ALM
input on. The program stops
(decelerates to a stop during pulse
output).
E-STOP switch active. E-STOP input has been turned off.
The program stops (stops
immediately during pulse output).
ENDL without LOOP . The numbers of LOOP commands
and ENDL commands in the program
did not match.
HOME sequence error. Mechanical home seeking did not
proceed as planned. The program
stops (decelerates to a stop during
pulse output).
(1) +LS input, -LS input and HOMELS
(2) HOMELS input did not turn on in a
(3) -LS or +LS has been detected while
Interpolation error. During the execution of two-axis linear
interpolation operation, the speed of the
sub-axis, calculated from the main axis,
exceeded the setting range.
Invalid value. Invalid setting value error. The
program stops (decelerates to a stop
during pulse output).
(1) A value outside the setting range
(2) The number of fractional digits
Line does not exist. The specified line number does not
exist in the program. The program
stops (decelerates to a stop during
pulse output).
Missing ENDL. The numbers of LOOP commands
and ENDL commands in the
program did not match.
Missing parameter. The input command is missing a
mandatory parameter.
10-4
Meaning
input are all turned on at the same
time.
three-sensor home detection.
operating in the CW or CCW
direction, respectively.
has been set.
differed between the unit value and
movement amount.
Possible cause and remedial action
• An anomaly has occurred at the driver. Check
the operating condition of the motor or ventilate
and cool the driver. Refer to the operating
manual for your driver.
• If the driver is not in the alarm state, check to
see if the alarm output logic of the driver
matches that of the controller.
• Turn the E-STOP input to "On" (current
supplied).
• Check the connections.
Correct the program so that one LOOP
command corresponds to one ENDL command.
• The positions of +LS and -LS are too close to
the position of HOMELS. Separate HOMELS
from ±LS so that ±LS and HOMELS do not turn
on at the same time.
• Check the connection between the controller
and ±LS/HOMELS.
If the connection is correct: Confirm that the
detection range of HOMELS is at least 10ms.
If the connection is incorrect: Connect
HOMELS.
When HOMELS is not used: Select the two-
sensor mode.
Correct the starting speed, operating speed or
acceleration/deceleration rate.
Enter the correct value.
Check the line number and enter the correct line
number.
Correct the program so that one LOOP
command corresponds to one ENDL command.
Enter the command and its parameters.
Reference
ACTL
command
Section 5.3.2,
"Internal input
circuit"
LOOP command
ENDL command
SEN command
LOOP command
ENDL command