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ACH550-UH User’s Manual
1-283
Diagnostics
5
R
ESERVED
Not used.
6
DC
UNDERVOLT
Intermediate circuit DC voltage is not sufficient. Check for and correct:
• Missing phase in the input power supply.
• Blown fuse.
• Undervoltage on mains.
7
AI
1
LOSS
Analog input 1 loss. Analog input value is less than
AI
1
FLT
LIMIT
(3021).
Check for and correct:
• Source and connection for analog input.
• Parameter settings for
AI
1
FLT
LIMIT
(3021) and 3001
AI
<
MIN FUNCTION
.
8
AI
2
LOSS
Analog input 2 loss. Analog input value is less than
AI
2
FLT
LIMIT
(3022).
Check for and correct:
• Source and connection for analog input.
• Parameter settings for
AI
2
FLT
LIMIT
(3022) and 3001
AI
<
MIN FUNCTION
.
9
MOT
TEMP
Motor is too hot, based on either the drive’s estimate or on temperature
feedback.
• Check for overloaded motor.
• Adjust the parameters used for the estimate (3005…3009).
• Check the temperature sensors and Group 35 parameters.
10
PANEL
LOSS
Panel communication is lost and either:
• Drive is in local control mode (the control panel displays HAND or OFF),
or
• Drive is in remote control mode (AUTO) and is parameterized to accept
start/stop, direction or reference from the control panel.
To correct check:
• Communication lines and connections
• Parameter 3002
PANEL
COMM
ERROR
.
• Parameters in Group 10: START/STOP/DIR and Group 11:
REFERENCE SELECT (if drive operation is AUTO).
11
ID
RUN
FAIL
The motor ID run was not completed successfully. Check for and correct:
• Motor connections
• Motor parameters 9905…9909
12
MOTOR
STALL
Motor or process stall. Motor is operating in the stall region. Check for and
correct:
• Excessive load.
• Insufficient motor power.
• Parameters 3010…3012.
14
EXTERNAL
FLT
1
Digital input defined to report first external fault is active. See parameter
3003
EXTERNAL
FAULT
1.
15
EXTERNAL
FLT
2
Digital input defined to report second external fault is active. See parameter
3004
EXTERNAL
FAULT
2.
Fault
Code
Fault Name In
Panel
Description and Recommended Corrective Action
Summary of Contents for ACH550-UH HVAC
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Page 8: ...1 8 ACH550 UH User s Manual Table of contents ...
Page 32: ...1 32 ACH550 UH User s Manual Installation ...
Page 66: ...1 66 ACH550 UH User s Manual Application macros ...
Page 186: ...1 186 ACH550 UH User s Manual Parameters ...
Page 333: ...ACH550 UH User s Manual 1 333 Technical data ...