Graco LSR Select Instructions Manual page 33

Error Fault Message
Code RSLogix (HIM)
E34 GroundShortFault
(Ground Fault)
E35 DriveUndervoltage
Fault (Pre-charge
Fault)
E36 DriveOvertemp Fault
(System Overtempera-
ture)
E37 PowerPhaseLoss
Fault (Phase Loss Flt)
E38 SERCOSFault (SER-
COS Ring Flt)
E39 DriveHardFault (Self
Sense Flt)
3A2152B
Problem or Symptom
Excessive ground cur-
rent in the converter was
detected
Converter pre-charge
cycle failed
Converter thermal switch
tripped
•
One or more phases of the input ac power is missing.
• Axis was enabled when main (three-phase) power was
removed.
• Common bus follower axis was enabled when dc bus
power was removed.
The SERCOS ring is not
active after being active
and operational
Self-sensing Commuta-
tion Startup Error
Potential Cause
Wiring error.
Motor internal ground
short.
Internal malfunction.
Grounded control power
terminal (applies to 230V
systems only).
Low AC input voltage.
Internal malfunction.
Excessive heat exists in
the power circuitry.
Cable disconnected.
Motion required for
self-sensing startup com-
mutation was obstructed.
Troubleshooting
Possible Resolution
•
Check motor power wiring.
• Check input power wiring.
Replace motor.
Disconnect motor power cable
from drive and enable drive
with current limit set to 0. If
fault clears, then a wiring error
or motor internal problem
exists. If fault remains, call
your sales representative.
•
Remove ground from control
power input.
• Source control power from
three-phase input power. Refer to
the Power Wiring Examples on
page 169 for more information.
• Add isolation transformer for
control power.
Check input ac voltage on all
phases.
Call your sales representative.
•
Reduce acceleration rates.
• Reduce duty cycle (ON/OFF) of
commanded motion.
• Increase time permitted for
motion.
• Use larger Kinetix 2000 con-
verter.
• Check for clogged vents or
defective fan.
• Make sure cooling is not
restricted by insufficient space
around the unit.
•
Check input ac voltage on all
phases.
• Disable axis before removing
power.
Check that fiber-optic cable is
present and connected prop-
erly.
•
Verify that there are no impedi-
ments to motion at startup, such
as hard limits.
• Increase self-sensing current if
high friction or load conditions
exist.
• Check motor or encoder wiring
using wiring diagnostics.
33