Installation manual

Diagnostics and troubleshooting
S1A53838 09/2011 151
Err2
[RAM fault]
• The control board RAM is inoperable. • Contact Schneider Electric to repair the
drive.
Err3
[ROM fault]
• The control board ROM is inoperable. • Contact Schneider Electric to repair the
drive.
Err4
[CPU fault 1]
• The control board CPU is inoperable. • Contact Schneider Electric to repair the
drive.
Err5
[Com RJ45 fault]
• Serial communication error • Check network control devices and cables.
• Check the setting of the communication
timeout parameter, F803.
• Check the remote graphic display option
cable.
• Check the setting of F829 parameters.
Err7
[Current sensor fault]
• A motor current sensor is inoperable. • Replace the drive.
Err8
[Network error fault]
• Network communication error • Check the network control devices and
cables.
Err9
[Remote keypad
fault]
• Graphic display option cable disconnected • Check the RJ45 cable.
Etn1
[Auto-tuning fault]
• Parameters F401 to F494 are
incorrectly set.
• The motor is too large for the drive.
• The motor cable gauge is too small.
• The motor is still rotating at the start of the
auto-tune.
• The drive is not powering a 3-phase
induction motor.
• Set parameters F401–F494 correctly.
• Use a larger drive.
• Use a larger gauge motor cable.
• Verify that the motor is stopped before
starting an auto-tune.
• Use the drive to power only a 3-phase
induction motor.
EtYP
[Drive fault]
• The main control board is inoperable. • Set parameter [Parameter reset] (tYP) to
6.
• If this does not clear the detected error,
replace the drive.
Fd1
[Closed damper 1
fault]
• Damper is locked in closed position. • Set [Damper flt behavior] (F583) to 0.
• Check the FL relay connection (FLA/FLB).
• Check the relay configuration
(
F130/F132).
Fd2
[Closed damper 2
fault]
• Damper blocked open or soldered. • Set [Damper fdb type] (F580) to 0 or
1.Check the FL relay connection
(
FLA/FLB).
• Check the relay configuration
(
F130/F132).
M020
[Total input power]
• The accumulated input power value is more
than 999.999 kWh.
• Clear the accumulated input power value
using logic input function 51, or parameter
F748.
OC1
[Overcurrent
acceleration]
• The acceleration time is too short.
• The setting of parameter [Mot cont. mode
sel.] (Pt) is incorrect.
• The drive is starting into a rotating load.
• The drive is powering a low impedance
motor.
• Ground fault
• Increase the acceleration time parameters
(ACC or F500).
• Select the correct setting for parameter [Mot
cont. mode sel.] (Pt).
• Enable catch on the fly, parameter F301.
• Adjust the switching frequency parameter
F300.
• Set parameter F316 to 1 or 3.
OC1P
[SC or ground fault
acc.]
• Short circuit or ground fault during
acceleration
• Using a 1000 V testing tool megger, check
the motor and motor cables for ground faults.
OC2
[Overcurrent
deceleration]
• The deceleration time is too short.
• Ground fault
• Increase the deceleration time parameters
(dEC or F501).
• Set parameter F316 to 1 or 3.
OC2P
[SC or ground fault
dec.]
• Short circuit or ground fault during
deceleration
• Using a 1000 V megger, check the motor and
motor cables for ground faults.
OC3
[Overcurrent cont.
speed]
• Abrupt fluctuations in load
• Abnormal load condition
• Reduce the load fluctuations.
• Check the load.
• Set parameter F316 to 1 or 3.
OC3P
[SC/ground flt cont.
spd]
• Short circuit or ground fault during constant
speed operation
• Using a 1000 V megger, check the motor and
motor cables for ground faults.
OCA
[SC inverter at start]
• Ground fault • Using a 1000 V megger, check the motor and
motor cables for ground faults.
OCL
[SC mot. cable at
start]
• Phase to phase output short circuit
• The motor impedance is too low.
• Using a 1000 V megger, check the motor and
motor cables for ground faults.
Code Name Possible causes Remedies