
ACS550-01/U1 User’s Manual 259
Diagnostics
Fault resetting
The ACS550 can be configured to automatically reset certain faults. Refer to
parameter Group 31: AUTOMATIC RESET.
WARNING! If an external source for start command is selected and it is active, the
ACS550 may start immediately after fault reset.
1005 PAR PCU 2 Parameter values for power control are inconsistent: Improper motor
nominal kVA or motor nominal power. Check for the following:
• 1.1 < (9906 MOTOR NOM CURR · 9905 MOTOR NOM VOLT · 1.73 / P
N
) < 3.0
where: P
N
= 1000 · 9909 MOTOR NOM POWER (if units are kW)
or P
N
= 746 · 9909 MOTOR NOM POWER (if units are hp, e.g. in US)
1006 PAR EXT RO Parameter values are inconsistent. Check for the following:
• Extension relay module not connected and
• 1410…1412
RELAY OUTPUTS 4…6 have non-zero values.
1007 PAR FIELDBUS
MISSING
Parameter values are inconsistent. Check for and correct:
• A parameter is set for fieldbus control (e.g. 1001 EXT1 COMMANDS = 10
(
COMM)), but 9802 COMM PROT SEL = 0.
1008
PAR PFC MODE Parameter values are inconsistent – 9904 MOTOR CTRL MODE must be = 3
(
SCALAR:FREQ), when 8123 PFC ENABLE is activated.
1009
PAR PCU 1 Parameter values for power control are inconsistent: Improper motor
nominal frequency or speed. Check for both of the following:
•1 <
(60 · 9907 MOTOR NOM FREQ / 9908 MOTOR NOM SPEED < 16
• 0.8 <
9908 MOTOR NOM SPEED /
(120 · 9907
MOTOR NOM FREQ / Motor Poles) < 0.992
1010/
1011
RESERVED Not used.
1012
PAR PFC IO 1 IO configuration is not complete – not enough relays are parameterized to
PFC. Or, a conflict exists between Group 14: RELAY OUTPUTS, parameter
8117 NR OF AUX MOT and parameter 8118 AUTOCHNG INTERV.
1013 PAR PFC IO 2 IO configuration is not complete – the actual number of PFC motors
(parameter 8127,
MOTORS) does not match the PFC motors in Group 14:
RELAY OUTPUTS and parameter 8118
AUTOCHNG INTERV.
1014 PAR PFC IO 3 IO configuration is not complete – the drive is unable to allocate a digital
input (interlock) for each PFC motor (parameters 8120
INTERLOCKS and
8127
MOTORS).
1015 RESERVED Not used.
1016
PAR USER LOAD C Parameter values for the user load curve are inconsistent. Check that the
following conditions are met:
• 3704
LOAD FREQ 1 < 3707 LOAD FREQ 2 < 3710 LOAD FREQ 3 <
3713
LOAD FREQ 4 < 3716 LOAD FREQ 5.
• 3705 LOAD TORQ LOW 1 < 3706 LOAD TORQ HIGH 1.
• 3708
LOAD TORQ LOW 2 < 3709 LOAD TORQ HIGH 2.
• 3711
LOAD TORQ LOW 3 < 3712 LOAD TORQ HIGH 3.
• 3714 LOAD TORQ LOW 4 < 3715 LOAD TORQ HIGH 4.
• 3717
LOAD TORQ LOW 5 < 3718 LOAD TORQ HIGH 5.
Fault
code
Fault name in
panel
Description and recommended corrective action
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