Setup guide

MN03902004E 10 November 2006
Fault Codes
Table 8: Troubleshooting Fault Table Table 8: Troubleshooting Fault Table, continued
Fault
Code Possible Problem Possible Solution
1 Firmware Incompatibility or
Hardware failure.
Call Eaton support.
3 Internal Communications Fault –
Communications to DSP have
been interrupted. Possible
electrical noise or hardware
failure.
Try a 24V DC control voltage
power cycle to attempt to clear
problem. Verify that the S811 is
properly grounded. Call Eaton
support if the problem persists.
4 Low Control Voltage Fault – The
external 24V power supply voltage
is dropping below the minimum
required to control the motor.
Use recommended 24V power
supplies with enough current
sourcing capability to close
contactors. Verify correct wire size
used to connect power supply to
S811. (See power supply
specification for more details.)
Verify connections are secure.
5 Power Pole Over Temperature
Fault – The S811 has detected the
internal SCR temperature is
excessive. Operating environment
above specified maximum
temperature, ventilation holes
blocked, fans are not operational,
starts per hour exceed
specifications, sensor failure on
circuit board, bypass contactor(s)
failed to close.
Ventilate to specified maximum
temperatures, clear obstructions,
verify fans are operational, verify
control system is not exceeding
the specified maximum starts per
hour.
6 Phase Loss Fault – Extreme phase
imbalance condition. Incoming
phase disconnected, blown fuse.
Repair broken connection, replace
fuse.
7 Phase Imbalance Fault – The
imbalance of the incoming phases
exceeds the trip threshold.
Correct imbalance problem with
mains. Increase the xx Imbalance
Fault xx parameters or disable the
fault if the other issues cannot be
resolved. Make sure your system
can tolerate the imbalance.
9 Under Load Fault – Current
supplied to the motor is below trip
threshold. Linkage or belt driven
by motor is broken, a clutch or
other load engagement device is
not operating, the motor is not
loaded to the trip current.
Repair/replace broken belts,
linkage, or clutch, and/or increase
load. Reduce Low I Trip % FLA to
an acceptable value (0% will
disable).
10 Over Current Fault – only active in
bypass if the Jam Fault is disabled.
Current exceeds the fault
threshold.
Disconnect power from S811 and
any other equipment. Remove
obstruction in motor drive train.
Verify S811 is properly sized for the
application.
11 Jam Fault – While in bypass an
obstruction has slowed or stalled
the motor resulting in extreme
motor current.
Disconnect power from S811 and
any other equipment and remove
obstruction. Jam Fault can be
disabled if trips occur during
normal operation. Over Current
Fault will provide protection at a
higher current threshold.
13 Bypass Failure Fault – S811
detected that the internal bypass
contact(s) did not close. Possibly
opened due to excessive shock or
24V DC control voltage sag
(insufficient voltage to maintain
contact closure).
Verify control power and wire size
meets specifications. Reduce
shock or vibration. Call Eaton
support if the problem persists.
14 Overload Fault – Motor has been
overloaded for an extended period
of time.
Reduce the motor’s load. Verify the
Overld Trip FLA and/or Ovrld Trip
Class if the overloads are infrequent
and are set to match the motor and
system. Note: Exceeding nameplate
ratings will shorten equipment life.
If fault happens during motor start:
verify the control system is not
exceeding the specified maximum
starts per hour. Increase the initial
torque to bring the motor up to
speed faster.
18 Instantaneous Over Current Fault –
Starting current excessive. Load
too great.
Reduce starting load, increase soft
starter capacity (be sure model
ratings can handle current
demands). Call Eaton support for
application assistance.
32 Internal NV Memory Fault –
Internal memory error.
Call Eaton support.
Fault
Code Possible Problem Possible Solution
36 Communications Loss Stop Fault –
Communications to a remote
network controller was lost while
motor was running. Device was
disconnected or the connection
broken.
Reattach network controller,
replace connection cable. Call
Eaton support if the problem
persists.
38 Temperature Sensor Fault –
Temperature sensor or
interconnection failure.
Call Eaton support. Fault can be
disabled, but S811 will not be
protected against failures caused
by excessive internal
temperatures.
39 Internal CPU Fault – Firmware
Incompatibility or Hardware
failure.
Call Eaton support.
42 Under Voltage Fault – Incoming AC
line voltage below trip threshold.
Device connected to incorrect
mains supply voltage.
Connect to correct supply voltage.
Verify Motor Rated Volt is set to
correct value. It may be necessary
to reduce this setting for soft mains.
43 Over Voltage Fault – Incoming AC
line voltage above trip threshold.
Device connected to incorrect
mains supply voltage.
Connect to correct supply voltage.
Verify Motor Rated Volt is set to
correct value. It may be necessary
to increase this setting for high
mains.
44 Motor Voltage Phase Reversal
Fault – incoming line phase
rotation sequence opposite of
device setting.
Set Phase Sequence to match
incoming sequence. If motor is
turning in wrong direction swap
two motor connection leads. If
mains leads need to be changed,
swap incoming leads and set Phase
Sequence to match incoming
sequence. If an upstream reverser
is used, disable Phase Rev Fault.
55 Motor Control Command Device
Missing Fault – A motor control
command device (DIM, Cover
Control, or similar device) was
removed.
Re-attach motor control command
device and reset the fault. If the
motor command device is to be
permanently removed, purge it
from the S811’s motor control
command device list (press and
hold the recessed RESET button
on the front of the S811 for six
seconds). The STATUS LED will
change to amber when the action
has started and any detached
motor control device has been
removed from the S811’s list.
56 Internal Communications Fault 2 –
The motor was stopped because
of an internal communications
error. Possible electrical noise or
hardware failure.
Try a 24V DC control voltage
power cycle to attempt to clear
problem. Verify the S811 is
properly grounded. Call Eaton
support if the problem persists.
57 Internal Program Memory Fault –
one or more internal memory
locations have been corrupted.
Cycle 24V DC power to the S811.
Call Eaton support if fault persists.
58 SCR Not Firing Fault – SCR is not
conducting when gated. Incoming
phase lost. Special application –
undersized or high impedance
motor, SCR malfunctioning,
circuitry damaged by megger
testing.
Re-apply lost phase. Review S811
application. Call Eaton support if
problem persists.
59 Shorted SCR fault – SCR is shorted
from over current abuse, bypass
contactor welded shut, application/
configuration issues.
Call Eaton support if problem
persists.
60 SCR Over Current Fault –
Excessive SCR Current prior to
bypass. Only active when Stall
Fault is disabled. Motor should be
up to speed prior to bypass.
Increase Soft Start Time and/or
Initial Torque. Reduce starting
load. Verify S811 is properly sized.
61 Mains AC Voltage Loss Fault –
fuses blown, disconnect open, or
breaker tripped.
Replace fuses, close disconnect, or
reset breaker.
63 Motor Stall Fault – S811 could not
engage the bypass contactors at
the end of the motor start time
because the start current was too
high. Motor did not reach full
speed during the start time.
Lengthen Soft Start Time and/or
increase Initial Torque. Loads that
are heavily loaded during a start
such as fans will often need an
initial torque setting much greater
than the factory default.
64 Voltage Zero Cross Lost Fault –
Mains lost, phase L1 or L3 lost.
Restore mains or lost phases. Call
Eaton support if problem persists.
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