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Error Handling
Section 8-2
Servo Driver Indicators
The Servo Driver provides a Display Area and two LED indicators.
■
Servo Driver Display Area
The Servo Driver Display Area displays among others status, alarm signals,
parameters in five digits 7-segment LED. A summary of the symbol display
contents is given in the following table.
■
Servo Driver Indicators
8-2
Error Handling
8-2-1
MC Unit Error Handling
Motion Error
The MC Unit is continuously checking for error conditions during operation,
parallel to all running processes. If a motion error occurs, the Servo Driver will
be disabled by using the RUN (Servo ON) signal to the Servo Driver.
A motion error will occur when the AXISSTATUS state for one of the axes
matches the ERRORMASK parameter setting (defined by the user) of that
axis. The Servo ON signal (WDOG) will be turned OFF, the
MOTION_ERROR parameter will be set to 1 and the ERROR_AXIS parame-
ter will contain the number of the first axis to have the error condition. The
motion error can be cleared by using the DATUM(0) command or performing
a system reset by using the DRV_RESET command.
The relevant parameters and commands are given here.
Symbol display
Contents
bb
Base block (no power to Servomotor, Servo Driver is not
enabled)
run
Operating (power to Servomotor, Servo Driver is enabled)
Pot
Forward rotation prohibited (POT (Forward limit switch) is
OFF)
Not
Reverse rotation prohibited (NOT (Reverse limit switch) is
OFF)
A.
❏❏
Alarm display
Symbol
Name
Color
Function
POWER
Power supply indicator
Green
Lit when control power supply is
normal.
CHARGE
Charge indicator
Red
Lit when main-circuit power sup-
ply is charging.
Parameter
Description
WDOG
The WDOG system parameter is the software switch used to
control the Driver Servo ON input, which enables the driver.
AXISSTATUS
The AXISSTATUS axis parameter contains the current status
bits of an axis.