English (GB)
12
42
Overload of
Digital Output on
X30/6 or
Overload of
Digital Output on
X30/7
For X30/6, check the load connected to X30/6 or
remove short-circuit connection.
Check parameter "5-32 Term X30/6 Digi Out
(MCB 101)".
W
For X30/7, check the load connected to X30/7 or
remove short-circuit connection.
Check parameter "5-33 Term X30/7 Digi Out
(MCB 101)".
45
Protective earth
fault 2
Earth fault
• Check for proper earthing and loose
connections.
• Check for proper wire size.
• Check the motor cables for short circuits
or leakage currents.
A
46
Power card
supply
The supply on the power card is out of range.
• Check for a defective power card.
• Check for a defective control card.
• Check for a defective option card.
• If a 24 V DC supply is used, verify proper
supply power.
A
47 24 V supply low The supply on the power card is out of range. Check for a defective power card. W
48 1.8 V supply low
The 1.8 VDC supply used on the control card is
outside of allowable limits. The power supply is
measured on the control card.
• Check for a defective control card.
• If an option card is present, check for
overvoltage.
W
49 Speed limit
The speed is not within the specified range in
parameter 4-11 Motor Speed Low Limit [RPM] and
parameter 4-13 Motor Speed High Limit [RPM].
• Check the parameters 4-11 and 4-13.
• Check the parameter 1-86.
W
50
AMA calibration
failed
The AMA does not work. Contact Grundfos Service. A
51
AMA check U
nom
and I
nom
The setting of motor voltage, motor current and
motor power is presumably wrong.
Check the settings in parameters 1-20 to 1-
25.
A
52 AMA low I
nom
The motor current is too low.
Check the settings in parameter "1-24 Motor
Current".
A
53
AMA motor too
big
The motor is too big for the AMA to be carried out. Contact Grundfos Service. A
54
AMA motor too
small
The motor is too big for the AMA to be carried out. Contact Grundfos Service. A
55
AMA parameter
out of range
The parameter values found from the motor are
outside the acceptable range.
Contact Grundfos Service. A
56
AMA interrupted
by user
The AMA has been interrupted by the user. Contact Grundfos Service. A
57 AMA timeout
Try to start the AMA again a number of times, until
the AMA is carried out. Please note that repeated
runs may heat the motor to a level where the
resistances R
s
and R
r
are increased. In most cases,
however, this is not critical.
Contact Grundfos Service. A
58
AMA internal
fault
The AMA cannot be implemented. Contact Grundfos Service. A
59 Current limit
The current is higher than the value in parameter "4-
18 Current Limit".
• Ensure that the motor data in parameters
1-20 to 1-25 is set correctly.
• Increase the current limit if necessary.
• Ensure that the system can operate safely
at a higher limit.
W
60 External interlock
A digital input signal indicates a fault condition
external to the drive. An external interlock has
commanded the drive to trip.
Clear the external fault condition. To resume
to normal operation, apply 24 V DC to the
terminal programmed for external interlock,
and reset the drive.
W
61 Feedback error
An error is detected between the calculated speed
and the speed measurement from the feedback
device.
• Check the settings for warning, alarm and
disabling in parameter 4-30 "Motor
Feedback Loss Function".
• Set the tolerable error in parameter "4-31
Motor Feedback Speed Error".
• Set the tolerable feedback loss time in
parameter 4-32 "Motor Feedback Loss
Timeout".
W/A
62
Output frequency
at maximum limit
The output frequency is higher than the value set in
parameter "4-19 Max Output Frequency".
• Check the application for possible
causes.
• Increase the output frequency limit.
Ensure that the system can operate safely
at a higher output frequency.
W
Alarm
code
Description Cause Remedy Type
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