ACS 850 Fault codes 2
ABB ACS 850 Fault Detection
What's in This Section?
This section lists alarm (warning) and fault messages with possible causes and corrective actions.
The code of the alarm/fault is displayed on the control panel of the drive and in the DriveStudio PC tool. An alarm or fault message indicates an abnormal condition of the drive.
Most alarm and fault causes can be identified and corrected using the information in this section. If not possible, contact an ABB representative.
In this section, alarms and faults are listed according to four-digit codes. The hexadecimal code in parentheses following the alarm/fault message is for fieldbus communication.
Safety
WARNING! Only authorized electricians can perform maintenance on the drive. Before starting to work with the drive, read the Safety Instructions on the first pages of the relevant Hardware Manual.
How to Reset
When the fault is cleared, it can be reset by pressing the RESET button on the drive control panel or by turning the supply voltage off and on for a while. The motor can be restarted after the fault is cleared.
A fault can also be reset from an external source selected with the 10.10 Fault reset option.
Fault History
When a fault is detected, it is stored in the fault recorder with a timestamp. The fault history stores information on the last 16 faults of the drive. The last three faults are preserved at the top when the power is turned off.
08.01 Active fault and 08.02 Last fault store the codes of the latest faults.
Alarms can be monitored through 08.05 Alarm word1 … 08.08 Alarm word4.
Alarm information is lost when the power is turned off or the fault is reset.
0021 STO1 LOST (0x8182)
Safe torque off (STO) function is active, meaning the safety circuit signal connected between XSTO:1 and XSTO:3 is lost.
- Check the safety circuit connections. For more information, refer to the relevant drive Hardware Manual, the description of parameter 30.07 (page 190), and the Safe torque off function Application guide for ACSM1, ACS850, and ACQ810 drives (3AFE68929814 [English]).
0022 STO2 LOST (0x8183)
Safe torque off (STO) function is active, meaning the safety circuit signal connected between XSTO:2 and XSTO:4 is lost.
0023 STO MODE CHANGE ERROR (0xFF7A)
Error in changing the safe torque off control, i.e., the 30.07 STO diagnostic setting could not be changed to Fault value.
0024 INTERNAL CARD OVERHEATING (0x7182)
The temperature of the interface card (interface board) between the power unit and the control unit exceeded the internal fault limit.
- Wait for the drive to cool down.
- Check for cooling fan failure.
- Check for obstructions in air flow.
0025 BC MODULE OVERHEATING (0x7183)
The temperature of the input bridge or brake chopper exceeded the internal fault limit.
- Wait for the drive to cool down.
- Check for excessive ambient temperature.
- Check for cooling fan failure.
- Check for obstructions in air flow.
- Check the sizing and cooling of the cabinet.
0026 AUTOMATIC PHASING (0x3187)
The automatic phasing routine (see the Automatic Phasing section on page 67) failed.
- Try other automatic phasing modes if possible (see parameter 11.07 Automatic phasing mode).
0027 PU LOST (0x5400)
The connection between the JCU Control Unit and the drive's power unit is lost.
- Check the connections between the JCU Control Unit and the power unit.
0028 PS COMMUNICATION (0x5480)
Communication errors detected between the JCU Control Unit and the drive's power unit.
- Check the connections between the JCU Control Unit and the power unit.
0030 EXTERNAL (0x9000)
Fault in an external device. (This information is configured via one of the programmable digital inputs.)
- Check external devices for faults.
- Check the setting of parameter 30.01 External fault setting.
0031 SAFE TORQUE OFF (0xFF7A)
Programmable fault:
30.07 STO diagnostics
Safe torque off (STO) function is active, meaning the safety circuit signal(s) connected to the XSTO connector is lost, either at startup or during operation, or when the drive is stopped and the 30.07 STO diagnostics parameter is set to Fault.
- Check the safety circuit connections. For more information, refer to the relevant drive Hardware Manual and the Safe torque off function Application guide for ACSM1, ACS850, and ACQ810 drives (3AFE68929814 [English]).
0032 OVERSPEED (0x7310)
The motor is rotating faster than the allowed maximum speed due to incorrectly set minimum/maximum speed, insufficient braking torque, or changes in load while using torque reference.
- Check the minimum/maximum speed settings, parameters 20.01 Maximum speed and 20.02 Minimum speed.
- Check the adequacy of the motor's braking torque.
- Check the applicability of torque control.
- Check the need for a brake chopper and resistor(s).
0033 BRAKE STARTING TORQUE (0x7185)
Programmable fault:
42.12 Brake fault function
Mechanical brake fault. The fault is activated when the required motor starting torque (42.08 Brake opening torque) cannot be provided.
- Check the brake opening torque setting, parameter 42.08.
- Check the torque and current limits of the drive.
- Refer to parameter group 20 Limits.
0034 BRAKE NOT CLOSED (0x7186)
Programmable fault:
42.12 Brake fault function
Mechanical brake control fault. For example, activated when the expected brake confirmation is not received during brake closure.
- Check the mechanical brake connection.
- Check the mechanical brake settings in parameter group 42 Mechanical brake control.
- To determine whether the issue is with the confirmation signal or the brake, check whether the brake is closed or open.
0035 BRAKE NOT OPEN (0x7187)
Programmable fault:
42.12 Brake fault function
Mechanical brake control fault. For example, activated when the expected brake confirmation is not received during brake opening.
- Check the mechanical brake connection.
- Check the mechanical brake settings in parameter group 42 Mechanical brake control.
- To determine whether the issue is with the confirmation signal or the brake, check whether the brake is closed or open.
0036 LOCAL CONTROL LOSS (0x5300)
Programmable fault:
30.03 Local control loss
The control panel or PC tool selected as the active control position for the drive has lost communication.
- Check the PC tool or control panel connection.
- Check the control panel connector.
- Replace the control panel in the mounting platform.
0037 NVMEM CORRUPTED (0x6320)
Drive internal fault.
Note: This fault cannot be reset.
- Check for a fault code extension in the fault recorder. See below for appropriate actions for each extension.
* For ACS850 drives, refer to Application programming (3AUA0000078664 [English]).
* Extension: 2051 The total number of parameters (including unused space between parameters) exceeds the firmware's maximum.
* Move parameters from firmware groups to application groups.
* Reduce the number of parameters.
Extension: Other Drive internal fault. Contact your local ABB representative.
0038 OPTION COMMUNICATION LOSS (0x7000)
Communication has been lost between the drive and the option module (FEN-xx and/or FIO-xx).
- Ensure that the option modules are correctly connected to Slot 1 and (or) Slot 2.
- Ensure that the option modules or Slot 1/2 connectors are not damaged. To determine whether the module or connector is damaged: Test each module separately in Slot 1 and Slot 2.
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