Yaskawa VCD 723 - Manual (Page 64)

4 Troubleshooting/Maintenance
58 Fault and Error Conditions
9/15/93
ERROR/FAULT PROBABLE CAUSE CORRECTIVE ACTION
➊
Verify constant CN14 and CN15
settings.
❷
Refer to troubleshooting chart 10.
Verify incoming power.
Verify speed related constants.
➊
Look for cooling fan obstructions.
❷
Replace cooling fan.
Check BNC ”T” Connector.
Check 95
Ω
termination resistors.
Replace the MicroTrac circuit card.
Verify that the given node number is
connected to the same coaxial cable
(the MicroTrac LAN) as the VCD 723,
and that it is operational.
➊
Verify that the given node number
is operating properly.
❷
Verify that the LAN is operating
properly.
Verify that the given node number is
connected to the same coaxial cable
(the MicroTrac LAN) as the VCD 723,
and that it is operational.
Verify that the given node number is
connected to the same coaxial cable
(the MicroTrac LAN) as the VCD 723,
and that it is operational.
Contact MagneTek. The software on
the MicroTrac circuit card needs to be
changed.
Contact MagneTek. The software on
the MicroTrac circuit card needs to be
changed.
Table 8. Standard Error and Fault Descriptions - Continued
776, MOTOR HOT
777, TRANSIENT P LOSS
778, SPEED DEVIATION
779, INVERTER FAN
800, LAN HARDWARE ERR
801, MAX. LAN RETRIES
802, ILLEGAL MSG TYPE
803, BROADCAST MISSED
804, DIRECTED MISSED
805, LAN - NO TX ROOM
806, LAN - NO RX ROOM
Drive detected that the motor overheat
temperature has been exceeded.
Drive detected low voltage, but
momentary power loss ride-thru is
enabled, and momentary power loss
ride-thru time (constant CN19) has not
been exceeded yet.
Drive detected excessive speed
deviation.
Drive detected that its cooling fan has
failed.
The Local Area Network (LAN)
hardware is not operting properly.
A directed LAN message was not
received by the given network node
number after trying several times.
A directed LAN message was received
by the VCD 723 from the given node,
nd the message content is not one of
the supported message data types.
A broadcast message from the given
node was not received by the VCD 723
within the allotted time, and one was
expected.
A directed message from the given
node was not received by the VCD 723
within the allotted time, and one was
expected.
Not enough memory is allocated in the
MicroTrac memory to store all of the
LAN messages that need to be
transmitted.
Not enough memory is allocated in the
MicroTrac memory to store and
process all of the LAN messages that
have been received.