MCFB_DriveFault

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Function Block - Returns the fault status, number, and description of the requested axis mapped to a Kollmorgen drive.

Inputs

Input	Data Type	Range	Unit	Default	Description
EN	BOOL	FALSE, TRUE	N/A	No default	Enables the KollmorgenUDFB. Used in the FFLD editor only.
Axis	AXIS_REF	1 to 256	N/A	No default	Name of a declared instance of the AXIS_REF library function. See AXIS_REF Structure. See Axis Name and Number.

Input

Data Type

Range

Unit

Default

Description

BOOL

FALSE, TRUE

N/A

No default

Enables the KollmorgenUDFB.

Used in the FFLD editor only.

Axis

AXIS_REF

1 to 256

N/A

No default

Name of a declared instance of the AXIS_REF library function.

See AXIS_REF Structure.
See Axis Name and Number.

Outputs

Output	Data Type	Range	Unit	Description
FAULT	BOOL	FALSE, TRUE	N/A	TRUE if the selected drive currently has a Fault.
FaultNumber	DINT	No range	N/A	If the axis is: S300/S700 Three-digit fault identifier. See S300 & S700 Errors and Warnings on KDN for a list of fault codes. AKD Three-digit fault identifier. See Fault and Warning Messages for a list of fault codes. AKD2G Four-digit fault identifier. See Faults and Warnings View for a list of fault codes. AKT2G Stepper Drive Status word (bitmask). See Bitmask Causes.
FaultDescription	STRING	N/A	N/A	Description of the fault.

Output

Data Type

Range

Unit

Description

FAULT

BOOL

FALSE, TRUE

N/A

TRUE if the selected drive currently has a Fault.

FaultNumber

DINT

No range

N/A

If the axis is:

S300/S700
- Three-digit fault identifier.
  - See S300 & S700 Errors and Warnings on KDN for a list of fault codes.
AKD
- Three-digit fault identifier.
  - See Fault and Warning Messages for a list of fault codes.
AKD2G
- Four-digit fault identifier.
  - See Faults and Warnings View for a list of fault codes.
AKT2G Stepper
- Drive Status word (bitmask).
  - See Bitmask Causes.

FaultDescription

STRING

N/A

Description of the fault.

Bitmask Causes

Bit	Description	Cause
0	Saturated	Drive stage operates with maximum duty cycle.
1	Over temperature.	Internal temperature is higher than 80 °C.
2	Torque overload.	Motor current is higher than the rated current.
3	Under voltage.	Motor supply voltage is either: 20% lower than the configured nominal voltage (warning). Less than 8V.
4	Over voltage.	Motor supply voltage is 10% higher than the configured nominal voltage.
5	Short circuit A.	Short circuit in motor coil A.
6	Short circuit B.	Short circuit in motor coil B.
7	No control power.	Control voltage at the power contacts is less than 12V.
8	Misc. error.	Either: The terminal initialization failed. Supply voltage is less than 8V. Internal terminal temperature is higher than 100 °C.
9	Configuration error.	CoE change has not yet been adopted into the current configuration.

Remarks

This function block requires FB_S700FltRpt, MCFB_AKDFault, and MCFB_AKDFaultLookup subprograms imported to project to compile and function.

The FAULT output returns TRUE when the selected drive goes into a fault state.
The fault number and description depend on the drive type mapped to the axis.
- If the drive is an:
  - AKD or AKD2G, the fault number is the same number as reported on the display of the drive.
  - AKT2G Stepper, the fault number represents the drive status word.
    - This word is a bitmask that represents the various error conditions.

This image shows the function or function block I/O.

Figure 1: MCFB_DriveFault

Usage

Provide drive fault information the application program uses to determine next steps.
- Example: Perform a machine-controlled stop or perform an immediate disable of the servo drives.
In the application program, sends output fault information from this UDFB to the HMI for review by the machine operator.

FBD Language Example

FFLD Language Example

IL Language Example

Not available.

ST Language Example

//Execute and Read the Function Block
Inst_MCFB_DriveFault( Axis1 );
Axis1Fault := Inst_MCFB_DriveFault.FAULT;
Axis1FaultNumber := Inst_MCFB_DriveFault.FaultNumber;
Axis1FaultDescription := Inst_MCFB_DriveFault.FaultDescription;

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