YASKAWA MP2200

10
Troubleshooting
10.2.2
SVA-01 Module LED Indicators
10-28
10.2.2 SVA-01 Module LED Indicators
The following table shows how to use the LED indicators to determine the operating status of the
SVA-01 Module, as well as relevant error information when the LED indicator status indicates an
error.
Classification
Indicator Name
Indicator Details Meaning
RUN ERR
Normal operation
Lit Lit Hardware reset status Indicates hardware reset.
Lit Not lit Initialization
• The LEDs are normally this status for about 1 to 6 seconds after
turning ON the power or resetting the Module. When an
Absolute Encoder is selected in fixed parameter 30, this status
will continue for 30 seconds per axis if there is an error in the
interface with the Absolute Encoder.
• This status will also continue indefinitely if there is an infinite
loop in Drawing A.
Not lit Lit Normal operating condition
This status is entered when STOP operation is performed from a
switch or the MPE720.
Errors
Not lit Blinking
A CPU data transmission error has been
detected.
2: Watchdog timer over error
3: Synchronization error
Note: The number indicates how many times
the ERR LED will flash.
When a CPU Module error is detected, the RUN LED will be lit
and the ERR LED will blink.
Blinking Blinking
Hardware error
(Number of LED blinks indicates error type.)
2: ROM diagnostic error
3: RAM diagnostic error
4: CPU function diagnostic error
5: CPU function diagnostic error
6: Shared memory diagnostic error
7: JL-045 diagnostic error
The RUN and ERR LEDs will blink when there is a self-diagnosis
failure.
Lit Blinking
Hardware error
(Number of LED blinks indicates error type.)
3: Address error (read) exception
4: Address error (write) exception
5: FPU exception error
6: Illegal general command
7: Illegal slot command
8: General FPU inhibited error
9: Slot FPU inhibited error
The ERR indicator will blink when an exception error has
occurred.
Warning
Blinking Lit CPU stopped The RUN LED will blink.
Lit Lit Undefined status −
Not lit Not lit Alarm or warning occurred.
Check the contents of the following monitoring parameters.
IL

02: Warning
IL

04: Alarm
IW

09, bit3: Motion Command Error End
IW

0B, bit3: Motion Subcommand Error End
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