Yaskawa CM052 - Manual (Page 4)

Yaskawa Electric America, Inc – www.drives.com
IG.V7.13, Page 4 of 5
Date: 07/01/04, Rev: 04-07
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LED Status Indicators and Diagnostics
LED Display
PWR MS NS WD
Content Cause Solution
# The drive is not powered
# Check the drive main circuit wiring
# Turn power on
Off Off Off Off Power Off
# The option board is not connected
correctly or securely to the drive
# Turn Off drive power
# Check the connection of the option board to the 2CN
connector on the drive
# Turn power on
Solid
Green
Off Off Solid Red CPU Fault
# The option board CPU is being
initialized or has a fault
# Cycle power to the drive
# If the fault persists, replace the option board
Solid
Green
Flashing
Green
Off
Flashing
Green
Option Board
Initialization
# Option board Initialization
# Wait for initialization to complete
# If initialization does not complete within several
seconds, cycle power to the drive
# If initialization does not complete after power cycling
the drive, replace the option card
Solid
Green
Flashing
Red
Off
Flashing
Green
Recoverable Option
Board Fault # An incorrect DIP switch setting or
other recoverable fault
# Check baud rate setting (DIP switches DR1 and DR0),
then cycle power to the drive
# If the fault persists, replace the option board
Solid
Green
Solid Red Off
Flashing
Green
Unrecoverable Option
Board Fault
# An un-recoverable fault
# Cycle power to the drive
# If the fault persists, replace the option board
Solid
Green
Solid Red Solid Red
Flashing
Green
Baud Rate Setting Fault # DR1 and DR0 are both set to ON
# Set the baud rate switches correctly
# Cycle power to the drive
Solid
Green
Solid
Green
Flashing
Red
Flashing
Green
Communication
Timeout
# A master communication timeout
# Check network termination
# Check network wiring
# Check that the communication bus wiring is separated
from the main circuit wiring
Solid
Green
Solid
Green
Solid Red
Flashing
Green
Communication Error # Unrecoverable communication fault
# Check that other device’s MAC ID is not unique per
the network
# Check that the master is configured correctly
# Check that the end termination resistors are correctly
connected to the communication bus
# Check that the communication device is correctly
connected per wiring diagrams
# Check that the communication bus wiring is separated
from the main circuit wiring
Solid
Green
Solid
Green
Flashing
Green
Flashing
Green
Normal Not
Communicating # Connected to a DeviceNet network
but not communicating
# Send explicit message or I/O message from the master
as necessary
Solid
Green
Solid
Green
Solid
Green
Flashing
Green
Normal
Communicating # Connected to a DeviceNet network
and communicating normally
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Note: 1: Do not install remove or handle a network card connected to the drive with power applied to the drive. Remove power from the drive and wait for the charge lamp to be
completely extinguished. Wait at least five additional minutes for the drive to be completely discharged. Measure the DC BUS voltage and verify that it is at a safe level.
2: When cycling power to the drive make sure that the drive is fully discharged prior to reapplying power.