Parker AC890 Product Manual page 215

Trips and Fault Finding
6511 6901
Keypad Keypad
Display Display
ATN1 MAX SPEED LOW
ATN2 MAINS VOLTS LOW
ATN 3 NOT AT SPEED
ATN4 MAG CURRENT FAIL
9-10
Page
Description
 During Autotune the motor is required to run at the
nameplate speed o f the motor. If MAX SPEED RPM
limits the speed to less than this value, an error will
be reported. Increase the value of MAX SPEED RPM
up to the nameplate rpm of the motor (as a
minimum). It may be reduced, if required, after the
Autotune is complete.
 The mains input voltage is not sufficient to carry out
the Autotune. Re-try when the mains has recovered.
 The motor was unable to reach the required speed to
carry out the Autotune. Possible reasons include:
motor shaft not free to turn; the motor data is
incorrect
 It was not possible to find a suitable value of
magnetising current to achieve the required operating
condition for the motor. Check the motor data is
correct, especially nameplate rpm and motor volts.
Also check that the motor is correctly rated for the
drive.
Possible Reason for Trip
890SD Standalone Drive - Frames G, H & J