PLUS+1® Compliant ACX104 Sensor Function Block User Manual€¦ · • Auto-calibration—as you move the sensor through its operating range, the function block captures sensor input

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User Manual

PLUS+1 Compliant

ACX104 Function Block

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User Manual PLUS+1 Compliant ACX104 Function Block

2 L1006051 · Rev CA · July 2015

©2015 Danfoss Power Solutions (US) Company. All rights reserved.

All trademarks in this material are properties of their respective owners.

PLUS+1, GUIDE, and Sauer-Danfoss are trademarks of Danfoss Power Solutions (US) Company. The Danfoss,

PLUS+1 GUIDE, PLUS+1 Compliant, and Sauer-Danfoss logotypes are trademarks of Danfoss Power Solutions (US)

Company.

Revision History

Revision Date Comment

Rev CA July 2015


L1006051 · Rev CA · July 2015 3

Contents

ACX104 Function Block ..................................................................................................................................... 4 Overview ......................................................................................................................................................... 4 Inputs ............................................................................................................................................................... 4 Outputs ............................................................................................................................................................ 5 About Function Block Connections...................................................................................................... 6 Fault and Status Logic ............................................................................................................................... 7 Setup Page Calibration Settings ............................................................................................................ 8

About Default Calibration Values ............................................................................................... 13 About Auto-Calibration Ranges .................................................................................................. 14

MC Controller—Input Configuration ................................................................................................. 15 MC Controller—How to Configure a MFIn .............................................................................. 16 MC Controller—How to Configure an AnIn ............................................................................ 17 MC Controller—How to Configure a DigAn ........................................................................... 18

SC Controller—Input Configuration .................................................................................................. 19 About the Para Input ................................................................................................................................ 20 About the Name Space Value ............................................................................................................... 22

How to Enter a Name Space Value ............................................................................................. 22


L1006051 · Rev CA · July 2015 4


Overview

This manual documents the ACX104_Sensor function block.

The ACX104_Sensor function block scales the voltage input from a Danfoss ACX104 Potentiometer Rotary Position Sensor into percent and scaler (degree) outputs that indicate rotary position.

The ACX104_Sensor function block works with ACX104 Sensors that receive a calibrated supply voltage of 5.0 V DC (±0.1) from PLUS+1 controllers.

See About Function Block Connections on page 6 for an overview of this function block’s connections and signals.

Inputs

ACX104 Function Block Inputs

Input Type Range Description

Para Bus —— Brings external inputs (such as digital inputs) into the function block. See About the Para Input on page 20 for more about this input.

Sensor —— 0 to 5000 Inputs voltage from the ACX104 sensor. The position of the sensor varies this voltage. 1000 = 1000 mV.



L1006051 · Rev CA · July 2015 5

Outputs

ACX104 Function Block Outputs

Output Type Range Description

Status U16 —— Reports the function block’s status.

• 0x0000 = Block is OK.

• 0x8001 = Block is not calibrated.

• 0x8002 = Block is in calibration.

Fault U16 —— Reports the function block’s faults.

• 0x0000 = Block is OK.

• 0x8001 = Input value is too low.

• 0x8002 = Input value is too high.

• 0x8004 = Open circuit.

• 0x8008 = Short circuit.

Diag U16 —— Reports if a calibration value applied in manual calibration is within range.

• 0x0000 = All calibration values are within acceptable ranges.

• 0x0002 = The Val_Voltage_High calibration value is above its allowable range of 3500–4000 mV.

• 0x0004 = The Val_Voltage_High calibration value is below its allowable range of 3500–4000 mV.

• 0x0008 = The Val_Voltage_Mid calibration value is above the allowable range set by the Cal_Midpoint_Min and Cal_Midpoint_Max parameters.

• 0x0010 = The Val_Voltage_Mid calibration value is below the allowable range set by the Cal_Midpoint_Min and Cal_Midpoint_Max parameters.

• 0x0020 = The Val_Voltage_Low calibration value is above its allowable range of 1000–1500 mV.

• 0x0040 = The Val_Voltage_Low calibration value is below its allowable range of 1000–1500 mV.

Percent S16 ±10000 Outputs a Percent signal that is proportional to the rotation of the sensor. Full positive rotation = 10000 (100.00%). Neutral = 0. Full negative rotation= -10000 (-100.00%).

Scalar S16 ±15600 Outputs a Scaler signal that indicates the rotation angle of the sensor in degrees. The Scaler outputs assume that this function block’s Setup page has Scaler_Max and Scaler_Min parameter values of 15600 and -15600. Full positive rotation = 15600 (156.00°). Neutral = 0. Full negative rotation= -15600 (-15600°).



6 L1006051 · Rev CA · July 2015

About Function Block Connections

Function Block Connections

Item Description

1. Input for optional external inputs.

2. Input for voltage from the sensor. Voltage varies with the sensor position.

3. Reports the function block’s status.

4. Reports the function block’s faults.

5. Reports if a calibration value applied in manual calibration is within range.

6. Outputs a Percent signal that is proportional to the rotation of the sensor.

7. Outputs a Scaler signal that indicates the rotation angle of the sensor in degrees.



L1006051 · Rev CA · July 2015 7

Fault and Status Logic

Fault Logic

Fault Hex Binary Cause Response Delay† Latch‡ Correction

Input value is

too low

0x8001 10000001 The voltage read at

the controller input

is lower than

expected.

Outputs set to zero. N N Use fault signal to trigger

application response. Verify wire

harness is correct.

Input value is

too high

0x8002 10000010 The voltage read at


is higher than

expected.



harness is correct.

Open circuit 0x8004 10000100 The voltage read at


is significantly lower

than expected.



harness is correct.

Short circuit 0x8008 10001000 The voltage read at


is significantly

higher than

expected.



harness is correct.

† A delayed fault is reported if the detected fault condition persists for a specified delay time. A delayed fault cannot be cleared until the fault condition remains undetected for the delay time. ‡ The function block maintains a latched fault report until the latch releases.

Status Logic

Status Hex Binary Cause Response Delay† Latch‡ Correction

Block is not

calibrated

0x8001 10000001 The block has not

yet calibrated the

sensor.


application response. Follow one

of the methods for calibration.

Block is

calibrating

0x8002 10000010 The block is

currently auto-

calibrating the

sensor.


application response. Continue

the auto-calibration process until

complete. † A delayed fault is reported if the detected fault condition persists for a specified delay time. A delayed fault cannot be cleared until the fault condition remains undetected for the delay time. ‡ The function block maintains a latched fault report until the latch releases.



8 L1006051 · Rev CA · July 2015

Setup Page Calibration Settings

The Setup page contains values that configure how you calibrate this function block. You can calibrate the function block three ways:

• Default calibration—you apply preset calibration values to the function block. These are fixed values. You cannot change them.

• Auto-calibration—as you move the sensor through its operating range, the function block captures sensor input voltages that fall within acceptable voltage ranges.

• Manual calibration—you apply your own calibration values to the function block. These values must fall within defined voltage ranges to be valid.



L1006051 · Rev CA · July 2015 9

Setup Page Calibration Settings

Input Type Range Description

Set_Defaults BOOL —— A false-to-true transition writes default calibration values into memory (EE).

Calibration values define the profile that the function block applies when converting a Sensor input

voltage into Percent and Scaler outputs.

When the Set_Defaults signal transitions from false to true, the function block writes a default

calibration value of:

• 3750 to the EE_Voltage_High memory location. This is the high calibration value.

With this value, a Sensor input of 3750 mV produces a Percent output of 10000 (100.00%)

and a Scaler output of 15600 (156.00°).

• 2500 to the EE_Voltage_Mid memory location. This is the middle calibration value.

With this value, a Sensor input of 2500 mV produces a Percent output of 0 (0.00%) and a

Scaler output of 0 (0.000°).

• 1250 to the EE_Voltage_Low memory location. This is the low calibration value.

With this value, a Sensor input of 1250 mV produces a Percent output of -10000 (-

100.00%) and a Scaler output of -15600 (-156.00°).

(The Scaler outputs assume that the Setup page has Scaler_Max and Scaler_Min

parameter values of 15600 and -15600.)

• F to EE_Phase memory location. This is the default phase value.

With this value, the polarity of the Percent and Scaler outputs stays unswitched. Positive

outputs stay positive. Negative outputs stay negative.



10 L1006051 · Rev CA · July 2015

Auto_Calibrate BOOL —— A false-to-true transition starts an auto-calibration procedure that writes high, middle, and low

calibration values into memory (EE) as the Sensor input voltage moves through its operating range.

Calibration values define the profile that the function block applies in converting a Sensor input


When the Auto_Calibrate signal transitions from false to true, the function block writes a Sensor

input voltage that ranges between:

• 3500–4000 mV to the EE_Voltage_High memory location. This is the high

calibration value.

A Sensor input voltage that is equal to the EE_Voltage_High value produces a

Percent output of 10000 (100.00%) and a Scaler output of 15600 (156.00°).

• The Cal_Midpoint_Max and the Cal_Midpoint_Min values to the EE_Voltage_Mid

memory location. This is the middle calibration value.

A Sensor input voltage that is equal to the EE_Voltage_Mid value produces a

Percent output of 0 (0.00%) and a Scaler output of 0 (0.000°).

• 1000–1500 mV to the EE_Voltage_Low memory location. This is the low calibration

value.

A Sensor input voltage that is equal to the EE_Voltage_Low value produces a

Percent output of -10000 (-100.00%) and a Scaler output of -15600 (-156.00°).

(The Scaler outputs assume that the Setup page has Scaler_Max and Scaler_Min

parameter values of 15600 and -15600.)

The block only writes a Sensor value into memory if it falls within a valid range and stays within this

range for more than three seconds.

Cal_Center_Only BOOL —— • F = The auto-calibration procedure captures the high, middle, and low calibration values.

• T = The auto-calibration procedure captures only the middle calibration value.

Cal_Midpoint_Max U16 1875 to

3125

Sets the upper limit of the valid range for middle calibration values.

The Cal_Midpoint_Max value applies in auto-calibration and manual calibration procedures.

The Cal_Midpoint_Max value must be greater than the Cal_Midpoint_Min value.

1000 = 1000 mV.

Cal_Midpoint_Min U16 1875 to

3125

Sets the lower limit of the valid range for middle calibration values.

The Cal_Midpoint_Min value applies in auto-calibration and manual calibration procedures.

The Cal_Midpoint_Min value must be less than the Cal_Midpoint_Max value.

1000 = 1000 mV.

Input_Limit_High U16 1000 to

4000

The function block outputs an Input value too high fault when the Sensor input voltage rises above

this value.

The Input_Limit_High value must be greater than the Input_Limit_Low value.

1000 = 1000 mV.



L1006051 · Rev CA · July 2015 11

Input_Limit_Low U16 1000 to

4000

The function block outputs an Input value too low fault when the Sensor input voltage falls below

this value.

The Input_Limit_Low value must be less than the Input_Limit_High value.

1000 = 1000 mV.

Val_Voltage_High U16 3500 to

4000

This value applies in a manual calibration procedure.

A false-to-true transition of the Set_Voltage_High signal writes this value into the EE_Voltage_High

memory location as the high calibration value.



A Sensor voltage that is equal to the EE_Voltage_High value produces a Percent output of 10000

(100.00%) and a Scaler output of 15600 (156.00°).

(The Scaler output assumes that the Setup page has Scaler_Max parameter value of 15600.)

1000 = 1000 mV.

Val_Voltage_Mid U16 1875 to

3125


A false-to-true transition of the Set_Voltage_Mid signal writes this value into the EE_Voltage_Mid

memory location as the middle calibration value.


voltage into Percent output and Scaler outputs.

A Sensor input voltage that is equal to the EE_Voltage_Mid value produces a Percent output of 0

(0.00%) and a Scaler output of 0 (0.000°).

1000 = 1000 mV.

Val_Voltage_Low U16 1000 to

1500


A false-to-true transition of the Set_Voltage_Low signal writes this value into the EE_Voltage_Low

memory location as the low calibration value.



A Sensor input voltage that is equal to the EE_Voltage_Low value produces a Percent output of -

10000 (-100.00%) and a Scaler output of -15600 (-156.00°).

(The Scaler output assumes that the Setup page has Scaler_Min parameter value of -15600.)

1000 = 1000 mV.

Val_Phase BOOL —— You can apply this value in a manual calibration procedure.

A false-to-true transition of the Set_Phase signal writes this value into the EE_Phase memory

location as the phase value.

The EE_Phase value sets the polarity of the function block’s Percent and Scaler outputs.

Changing the Val_Phase value makes positive values negative and negative values positive.



12 L1006051 · Rev CA · July 2015

Set_Voltage_High BOOL —— You transition this signal in a manual calibration procedure.

A false-to-true transition of this signal writes the Val_Voltage_High value to the EE_Voltage_High

memory location.

The EE_Voltage_High value is the high calibration value.

Set_Voltage_Mid BOOL —— You transition this signal in a manual calibration procedure.

A false-to-true transition of this signal writes the Val_Voltage_Mid value to the EE_Voltage_Mid

memory location.

The EE_Voltage_Mid value is the middle calibration value.

Set_Voltage_Low BOOL —— You transition this signal in a manual calibration procedure.

A false-to-true transition of this signal writes the Val_Voltage_Low value to the EE_Voltage_Low

memory location.

The EE_Voltage_Low value is the low calibration value.

Set_Phase BOOL —— You can transition this signal in a manual calibration procedure.

A false-to-true transition of this signal writes the Val_Phase value to the EE_Phase memory location.

The EE_Phase value sets the phase (polarity) of the function block’s Percent and Scaler outputs.

Scaler_Max S16 ±32767 Sets the maximum positive Scaler (degree) output. Typically, this value should represent the most

positive rotation of the ACX104 Sensor.

-15600 = -156.00°.

Scaler_Min S16 ±32767 Sets the maximum negative Scaler (degree) output. Typically, this value should represent the most

negative rotation of the ACX104 Sensor.

-15600 = -156.00°.

Chkpt BOOL —— – T—includes the function block’s built-in Advanced Checkpoint with Namespace components when

you compile the LHX download file. The Service Tool program will be able to access function block

signals through these checkpoints.

– F—excludes the function block’s built-in Advanced Checkpoint with Namespace components

when you compile the LHX download file. The Service Tool program will not be able to access

function block signals through these checkpoints.



L1006051 · Rev CA · July 2015 13

About Default Calibration Values

This graph shows how the default calibration values configure the relationship between the function block’s Sensor input voltage and its Percent and Scaler outputs. Default calibration—you apply preset calibration values to the function block. These are fixed values.



14 L1006051 · Rev CA · July 2015

About Auto-Calibration Ranges

In an auto-calibration procedure, the function block captures high, middle, and low calibration values as the block’s Sensor input voltage moves through its operating range. The block only captures sensor voltages that fall within specific ranges and stay within these ranges for more than three seconds. This graph shows the ranges in which the function block can capture low, middle, and high calibration values in an auto-calibration procedure.

In an auto-calibration procedure, the:

• Default low calibration value of 1250 (±250) mV sets the range for a valid low calibration value. A valid low calibration value must fall between 1000 and 1500 mV.

• Default high calibration value of 3750 (±250) mV sets the range for a valid high calibration value. A valid high calibration value must fall between 3500 and 4000 mV.

• Cal_Midpoint_Max value and the Cal_Midpoint_Min values set the range for a valid middle calibration value.



L1006051 · Rev CA · July 2015 15

MC Controller—Input Configuration

If you have an SC controller, see SC Controller—Input Configuration on page19.

You can route the signals needed by this function block’s Sensor input though:

• A MFIn (Multifunction Input) on your controller.

• An AnIn (Analog Input) on your controller.

• A DigAn (Digital/Analog input) on your controller.



16 L1006051 · Rev CA · July 2015

MC Controller—How to Configure a MFIn

1. In the GUIDE template, enter the Inputs page.

1. Enter the MFIn page that routes to the input.

2. Delete the route as shown in the preceding figure.



L1006051 · Rev CA · July 2015 17

MC Controller—How to Configure an AnIn


2. Enter the AnIn page that routes to the input.




18 L1006051 · Rev CA · July 2015

MC Controller—How to Configure a DigAn


2. Enter the DigAn page that routes to the input.




L1006051 · Rev CA · July 2015 19

SC Controller—Input Configuration

If you have an SC controller, see MC Controller—Input Configuration on page 15.

You can route the signals needed by this function block’s Sensor input though a MFIn:


2. Enter the MFIn page that routes to the input.

3. Delete the routes as shown in the preceding figure.



20 L1006051 · Rev CA · July 2015

About the Para Input

Figure Callouts

Item Description

1. An F/T transition writes the Val_Voltage_High value to memory.

2. An F/T transition writes the Val_Voltage_Mid value to memory.

3. An F/T transition writes the Val_Voltage_Low value to memory.



L1006051 · Rev CA · July 2015 21

The preceding figure shows the modifications made to the Setup page to enable external inputs to control the writing of calibration values into memory.



22 L1006051 · Rev CA · July 2015

About the Name Space Value

If you use the same function block more than once in an application, you must change each function block’s Name Space value to avoid compiler errors.

These function blocks allocate memory and checkpoints using names (“aliases”). Identical function blocks have identical memory and checkpoint names. Identical memory and checkpoint names will cause a compiler error.

The Name Space value adds a unique prefix to each memory and checkpoint name to avoid errors. Keep Name Space values short to save controller memory.

How to Enter a Name Space Value

In the PLUS+1 GUIDE menu bar, click the Query/Change button.

4. Click the function block’s page name to display the Edit Page window.

5. In the Edit Page window, enter a meaningful Name Space value.

6. Press /.

7. Repeat these steps to enter unique Name Space values for other identical function blocks.


(This page is intentionally blank.)

L1006051 · Rev CA · July 2015 www.danfoss.com ©2015 Danfoss Power Solutions (US) Company

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Documents

PLUS+1® Compliant ACX104 Sensor Function Block User Manual€¦ · • Auto-calibration—as you move the sensor through its operating range, the function block captures sensor input