Danfoss PLUS+1 Compliant EMD Speed Sensor QUAD Function Block
Specifications
- Product: PLUS+1 Compliant EMD Speed Sensor Quadrature Function Block
- Revision: Rev AA (May 2015)
- Manufacturer: Danfoss
Product Information
The EMD_SPD_QUAD Function Block outputs an RPM signal and a DIR signal based on inputs from an EMD Speed Sensor. It receives inputs such as Phase A, Phase B, Voltage, and Config signals to calculate RPM output.
FAQ
Q: What is the purpose of the EMD_SPD_QUAD Function Block?
A: The EMD_SPD_QUAD Function Block outputs an RPM signal and a DIR signal based on inputs from an EMD Speed Sensor.
DIMENSIONS
www.powersolutions.danfoss.com
Revision History
| Revision | Date | Comment |
| Rev AA | May 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.
Overview
This function block outputs an RPM signal and a DIR signal based on inputs from an EMD Speed Sensor.
On an MC and SC controller, this function block receives its:
- Phase A input through an MFIn.
- Phase B input through an MFIn.
Inputs
EMD_SPD_QUAD Function Block Inputs
| Input | Type | Range | Description |
| Param | —— | —— | Input for a user-defined Pulse/Rev value that defines the number of pulses equal to one revolution.
Optionally, an input for a DirLockHz value to replace this function block’s internal default fault direction-lock frequency value. |
| Phase A | Bus | —— | Inputs speed and direction signals from the speed sensor. |
| Per | U32 | 1,250 to
10,000,000 |
The measured period output by the Speed Sensor.
The function block uses the Per signal, Count signal, and Puls/Rev parameter value to calculate its RPM output. 10,000 = 1,000 μs. |
L1429531 · Rev AA · May 2015
EMD_SPD_QUAD Function Block Inputs
| Input | Type | Range | Description |
| Count | U16 | 0 to 65,535 | The measured count per program loop output by the Speed Sensor.
The function block uses the Per signal, Count signal, and Puls/Rev parameter value to calculate its RPM output. 1,000 = 1,000. |
| QuadCount | S16 | -32768 to
32767 |
The measured direction and number of counts based on phase shifted pulse waves from Phase A
and Phase B. 1,000 = 1,000. |
| Volt/Voltage | U16 | 0 to 5,250 | The measured voltage of the input signal that the Speed Sensor outputs, which the block uses for fault detection. |
| Config | Sub-bus | —— | Contains the signals that configure this input. |
| Phase B | Bus | —— | Inputs speed signals from the speed sensor. |
| Per | U32 | 1,250 to
10,000,000 |
The measured period output by the Speed Sensor.
The function block uses the Per signal, Count signal, and Puls/Rev parameter value to calculate its RPM output. 10,000 = 1,000 μs. |
| Count | U16 | 0 to 65,535 | The measured count per program loop output by the Speed Sensor.
The function block uses the Per signal, Count signal, and Puls/Rev parameter value to calculate its RPM output. 1,000 = 1,000. |
| Volt/Voltage | U16 | 0 to 5,250 | The measured voltage of the input signal that the Speed Sensor outputs, which the block uses for fault detection. |
| Config | Sub-bus | —— | Contains the signals that configure this input. |
Outputs
EMD_SPD_QUAD Function Block Outputs
| Output | Type | Range | Description |
| Status | U16 | —— | Reports the function block’s status.
This function block uses a non-standard bitwise scheme to report its status and faults. · 0x0000 = Block is OK. · 0x0008 = Puls/Rev or DirLockHz parameter value is out of range. |
| Fault | U16 | —— | Reports the function block’s faults.
This function block uses a non-standard bitwise scheme to report its status and faults. · 0x0000 = Block is OK. · 0x0001 = Per signal in the function block’s Phase A input is too low. · 0x0002 = Volt/Voltage signal in the function block’s Phase A input is out of range. · 0x0004 = Per signal in the function block’s Phase B input is too low. · 0x0008 = Volt/Voltage signal in the function block’s Phase B input is out of range. · 0x0010 =The difference in frequencies reported by the function block’s Phase A and Phase B inputs is greater than 5%. |
| Diag | —— | —— | Outputs a bus with Freq, FltTmrPhase A, FltTmrPhase B, and FltTmrFreqDiff signals that are available for troubleshooting. |
| Freq | U32 | 0 to 1,000,
000,000 |
The measured frequency of the Speed Sensor. 100,000 = 10,000 Hz. |
| FltTmrPhase A | U16 | 0 to 65,535 | When a frequency fault:
· Occurs, this output counts up the milliseconds until the function block makes a fault declaration. · Clears, the output counts down the milliseconds until the function clears the fault declaration. 1,000 = 1,000 ms. |
| FltTmrPhase B | U16 | 0 to 65,535 | When a frequency fault:
· Occurs, this output counts up the milliseconds until the function block makes a fault declaration. · Clears, the output counts down the milliseconds until the function clears the fault declaration. 1,000 = 1,000 ms. |
| FltTmrFreqDiff | U16 | 0 to 65,535 | When a frequency difference fault:
· Occurs, this output counts up the milliseconds until the function block makes a fault declaration. · Clears, the output counts down the milliseconds until the function clears the fault declaration. 1,000 = 1,000 ms. |
| dRPM | U16 | 0–25,000 | Speed sensor revolutions per minute x 10 (deciRPM). The function block clamps this output at 25,000.
1 = 0.1 rpm. |
| RPM | U16 | 0–2,500 | Speed sensor revolutions per minute.
The function block clamps this output at 2,500. 1 = 1 rpm. |
EMD_SPD_QUAD Function Block Outputs
| Output | Type | Range | Description |
| Dir | S8 | -1, 0, +1 | The Speed Sensor’s direction of rotation.
· -1 = Counterclockwise (CCW). · 0 = Neutral. · +1 = Clockwise (CW). |
About Function Block Connections
Function Block Connections
| Item | Description |
| 1. | Input for common parameters that can be applied to multiple function blocks. |
| 2. | Input for a bus with:
· The voltage, period, quadcount, and count signals output by the EMD Speed Sensor. · A sub-bus with signals that configure the controller input that receives these signals. |
| 3. | Input for a bus with:
· The voltage, period, quadcount, and count signals output by the EMD Speed Sensor. · A sub-bus with signals that configure the controller input that receives these signals. |
| 4. | Reports the status of the function block. |
| 5. | Reports the fault of the function block. |
| 6. | Outputs a bus with Freq, FltTmrPhase A, FltTmrPhase B, and FltTmrFreqDiff signals that are available for troubleshooting. |
| 7. | Speed sensor revolutions per minute. |
| 8. | Speed sensor revolutions per minute x 10 (deciRPM). |
| 9. | The Speed Sensor’s direction of rotation.
· -1 = Counterclockwise (CCW). · 0 = Neutral. · +1 = Clockwise (CW). |
Status and Fault Logic
Unlike most other PLUS+1 compliant function blocks, this function block uses non-standard status and fault codes.
Status Logic
| Status | Hex* | Binary | Cause | Response | Correction |
| A parameter is out of range. | 0x0008 | 1000 | Puls/Rev, FaultDetTm, or DirLockHz parameter is out of range. | The function block clamps the out-of-range value at either its upper or lower limit. | Get the out-of-range parameter back within its range. |
* Bit 16 set to 1 identifies a standard Danfoss status or fault code.
Fault Logic
| Fault | Hex* | Binary | Cause | Response | Delay† | Latch‡ | Correction |
| Per signal in the function block’s Phase A input is too low. | 0x0001 | 00000001 | Per signal < 1,250 Hz. | The function block outputs its maximum RPM and dRPM
values. |
Y | N | Check for hardware issues, such as electrical noise, that can produce an invalid Per signal
value. |
| Volt signal in the function block’s Phase
A input is out of range. |
0x0002 | 00000010 | 2000 V < Volt signal
< 3000 V. |
The function block outputs 0 for RPM and dRPM values. | Y | N | Check for hardware issues, such as an open circuit signal wire or missing sensor voltage supply. |
| Per signal in the function block’s Phase B input is too low. | 0x0004 | 00000100 | Per signal < 1,250 Hz. | The function block outputs its maximum RPM and dRPM
values. |
Y | N | Check for hardware issues, such as electrical noise, that can produce an invalid Per signal
value. |
| Volt signal in the function block’s Phase B input is out
of range. |
0x0008 | 00001000 | 2000 V < Volt signal
< 3000 V. |
The function block outputs 0 for RPM and dRPM values. | Y | N | Check for hardware issues, such as an open circuit signal wire or missing sensor voltage supply. |
| Measured difference between Phase A and Phase B
frequency too big. |
0x0010 | 00010000 | |Freq A -Freq B| > 5% of current frequency. | No built-in response, output reported as measured by Phase A input. | Y | N | Check for hardware issues, such as electrical noise, that can produce an invalid Per signal value. |
Bit 16 set to 1 identifies a standard Danfoss status or fault code.
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.
Function Block Parameter Values
Enter the top-level page of the EMD_SPD_QUAD function block to view and change this function block’s parameters.
Function Block Parameters
| Input | Type | Range | Description |
| Puls/Rev | U16 | 20–120, 180 | Number of pulses per revolution of the Speed Sensor. Refer to the EMD Speed Sensor Technical Information (Danfoss part L1017287) for the correct value. |
| FaultDetTm | U16 | —— | Sets the time between when the function block detects a:
· Fault condition and then makes a fault declaration. · Cleared fault condition and then clears the fault declaration. 1,000 = 1,000 ms. |
| DirLockHz | U16 | 0–8,000 Hz | Sets the frequency above which the function block’s Dir output locks. Above this frequency, the function block does not report changes in direction.
1,000 = 1,000 Hz. |
MC Controller—Input Configuration
If you have an SC controller
You route the function block’s:
Phase A and Phase B inputs through MFIn.
You must change the MFIn default configurations to accept these inputs.
How to Configure a MFIn
- In the GUIDE template, enter the Inputs page.
- Enter the MFIn page that receives the input.
- Make the changes that are shown in the preceding figure.
SC Controller—Input Configuration
If you have an MC controller
You route this function block’s:
Phase A and Phase B inputs through MFIn.
You must change the default configuration of the MFIn to accept this input.
The MFIn that you use must be capable of a Freq input and have configurable Bias, Range, and InputMode values.
How to Configure a MFIn
- In the GUIDE template, enter the Inputs page.
- Enter the MFIn page that receives the input.
- Make the changes that are shown in the preceding figure.
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All trademarks in this material are the property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss Power Solutions (US) Company. All rights reserved.
L1429531 · Rev AA · May 2015
©2015 Danfoss Power Solutions (US) Company
Documents / Resources
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