Danfoss MBS 1250 Operating guide
User Manual
PLUS+1® Compliant
MBS 1250 Pressure Sensor Function
Blocks
powersolutions.danfoss.com
User Manual
PLUS+1® Compliant MBS 1250 Pressure Sensor Function Blocks
Revision history |
Table of revisions |
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March 2018 |
Added Prs_Snsr550b and Prs_Snsr_Gen function block. |
0401 |
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April 2016 |
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CA |
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November 2011 |
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2 | © Danfoss | March 2018 |
11062069 | AQ00000100en-US0401 |
User Manual |
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PLUS+1® Compliant MBS 1250 Pressure Sensor Function Blocks |
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Contents |
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Prs_Snsr40b Function Block |
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Inputs.................................................................................................................................................................................................... |
5 |
Outputs................................................................................................................................................................................................ |
5 |
Status and Fault Logic..................................................................................................................................................................... |
6 |
Status Logic................................................................................................................................................................................... |
6 |
Fault Logic..................................................................................................................................................................................... |
6 |
Relationship Between Function Block Input and Output Signals................................................................................... |
7 |
Function Block Connections......................................................................................................................................................... |
8 |
MC Controller—Input Configuration........................................................................................................................................ |
8 |
Configure the MFIn..................................................................................................................................................................... |
9 |
Configure the DigAn.................................................................................................................................................................. |
9 |
SC Controller—Input Configuration....................................................................................................................................... |
10 |
Configure the MFIn.................................................................................................................................................................. |
10 |
Configure the DigAn................................................................................................................................................................ |
11 |
Prs_Snsr160b Function Block |
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Inputs.................................................................................................................................................................................................. |
12 |
Outputs.............................................................................................................................................................................................. |
13 |
Status and Fault Logic.................................................................................................................................................................. |
13 |
Status Logic................................................................................................................................................................................. |
13 |
Fault Logic................................................................................................................................................................................... |
14 |
Relationship Between Function Block Input and Output Signals................................................................................ |
14 |
Function Block Connections...................................................................................................................................................... |
15 |
MC Controller—Input Configuration...................................................................................................................................... |
15 |
Configure the MFIn.................................................................................................................................................................. |
16 |
Configure the DigAn................................................................................................................................................................ |
16 |
SC Controller—Input Configuration....................................................................................................................................... |
17 |
Configure the MFIn.................................................................................................................................................................. |
17 |
Configure the DigAn................................................................................................................................................................ |
18 |
Prs_Snsr250b Function Block |
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Inputs.................................................................................................................................................................................................. |
19 |
Outputs.............................................................................................................................................................................................. |
20 |
Status and Fault Logic.................................................................................................................................................................. |
20 |
Status Logic................................................................................................................................................................................. |
20 |
Fault Logic................................................................................................................................................................................... |
21 |
Relationship Between Function Block Input and Output Signals................................................................................ |
21 |
Function Block Connections...................................................................................................................................................... |
22 |
MC Controller—Input Configuration...................................................................................................................................... |
22 |
Configure the MFIn.................................................................................................................................................................. |
23 |
Configure the DigAn................................................................................................................................................................ |
23 |
SC Controller—Input Configuration....................................................................................................................................... |
24 |
Configure the MFIn.................................................................................................................................................................. |
24 |
Configure the DigAn................................................................................................................................................................ |
25 |
Prs_Snsr400b Function Block |
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Inputs.................................................................................................................................................................................................. |
26 |
Outputs.............................................................................................................................................................................................. |
27 |
Status and Fault Logic.................................................................................................................................................................. |
27 |
Status Logic................................................................................................................................................................................. |
27 |
Fault Logic................................................................................................................................................................................... |
28 |
Relationship Between Function Block Input and Output Signals................................................................................ |
28 |
Function Block Connections...................................................................................................................................................... |
29 |
MC Controller—Input Configuration...................................................................................................................................... |
29 |
Configure the MFIn.................................................................................................................................................................. |
30 |
Configure the DigAn................................................................................................................................................................ |
30 |
SC Controller—Input Configuration....................................................................................................................................... |
31 |
Configure the MFIn.................................................................................................................................................................. |
31 |
Configure the DigAn................................................................................................................................................................ |
32 |
Prs_Snsr500b Function Block |
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© Danfoss | March 2018 |
11062069 | AQ00000100en-US0401 | 3 |
User Manual |
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PLUS+1® Compliant MBS 1250 Pressure Sensor Function Blocks |
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Contents |
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Inputs.................................................................................................................................................................................................. |
33 |
Outputs.............................................................................................................................................................................................. |
34 |
Status and Fault Logic.................................................................................................................................................................. |
34 |
Status Logic................................................................................................................................................................................. |
34 |
Fault Logic................................................................................................................................................................................... |
35 |
Relationship Between Function Block Input and Output Signals................................................................................ |
35 |
Function Block Connections...................................................................................................................................................... |
36 |
MC Controller—Input Configuration...................................................................................................................................... |
36 |
Configure the MFIn.................................................................................................................................................................. |
37 |
Configure the DigAn................................................................................................................................................................ |
37 |
SC Controller—Input Configuration....................................................................................................................................... |
38 |
Configure the MFIn.................................................................................................................................................................. |
38 |
Configure the DigAn................................................................................................................................................................ |
39 |
Prs_Snsr550b Function Block |
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Inputs.................................................................................................................................................................................................. |
40 |
Outputs.............................................................................................................................................................................................. |
41 |
Status and Fault Logic.................................................................................................................................................................. |
41 |
Status Logic................................................................................................................................................................................. |
41 |
Fault Logic................................................................................................................................................................................... |
42 |
Relationship Between Function Block Input and Output Signals................................................................................ |
42 |
Function Block Connections...................................................................................................................................................... |
43 |
MC Controller—Input Configuration...................................................................................................................................... |
43 |
Configure the MFIn.................................................................................................................................................................. |
44 |
Configure the DigAn................................................................................................................................................................ |
44 |
SC Controller—Input Configuration....................................................................................................................................... |
45 |
Configure the MFIn.................................................................................................................................................................. |
45 |
Configure the DigAn................................................................................................................................................................ |
46 |
Prs_Snsr600b Function Block |
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Inputs.................................................................................................................................................................................................. |
47 |
Outputs.............................................................................................................................................................................................. |
48 |
Status and Fault Logic.................................................................................................................................................................. |
48 |
Status Logic................................................................................................................................................................................. |
48 |
Fault Logic................................................................................................................................................................................... |
49 |
Relationship Between Function Block Input and Output Signals................................................................................ |
49 |
Function Block Connections...................................................................................................................................................... |
50 |
MC Controller—Input Configuration...................................................................................................................................... |
50 |
Configure the MFIn.................................................................................................................................................................. |
51 |
Configure the DigAn................................................................................................................................................................ |
51 |
SC Controller—Input Configuration....................................................................................................................................... |
52 |
Configure the MFIn.................................................................................................................................................................. |
52 |
Configure the DigAn................................................................................................................................................................ |
53 |
Prs_Snsr_Gen Function Block |
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Inputs.................................................................................................................................................................................................. |
54 |
Outputs.............................................................................................................................................................................................. |
54 |
Status and Fault Logic.................................................................................................................................................................. |
55 |
Status Logic................................................................................................................................................................................. |
55 |
Fault Logic................................................................................................................................................................................... |
55 |
Relationship Between Function Block Input and Output Signals................................................................................ |
56 |
Function Block Connections...................................................................................................................................................... |
57 |
MC Controller—Input Configuration...................................................................................................................................... |
57 |
Configure the MFIn.................................................................................................................................................................. |
58 |
Configure the DigAn................................................................................................................................................................ |
58 |
SC Controller—Input Configuration....................................................................................................................................... |
59 |
Configure the MFIn.................................................................................................................................................................. |
59 |
Configure the DigAn................................................................................................................................................................ |
60 |
4 | © Danfoss | March 2018 |
11062069 | AQ00000100en-US0401 |
User Manual
PLUS+1® Compliant MBS 1250 Pressure Sensor Function Blocks
Prs_Snsr40b Function Block
This function block configures the output of MBS 1250 pressure sensors with a nominal 0–40 bar [4000 kPa/580 PSI] range.
Inputs
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Find out how the function block uses a reference voltage and a changing input voltage to produce PSI, |
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kPa, dBar and Pct outputs. |
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Function Block Inputs |
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Input |
Type |
Range |
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Description |
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Snsr Pwr |
U16 |
0–5250 mV |
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Inputs a reference voltage that the PLUS+1® controller also applies to the Pin 1 (+ Supply) on the pressure |
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transmitter. |
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Input |
U16 |
0–5250 mV |
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The function block compares the changing Input voltage with the constant Snsr Pwr reference voltage to produce |
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PSI, kPa, dBar and Pct outputs. |
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The function block’s nominal operating range is between 10.00% and 90.00% of Snsr Pwr voltage. |
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When the Input voltage reaches: |
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• 10.00% of the Snsr Pwr voltage, the function block’s output starts rising above zero. |
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• 90.00% of the Snsr Pwr voltage, the function block outputs its maximum nominal outputs of PSI and kPa. The |
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maximum nominal output is specified by Bar and is limited to 2200. |
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• 100.00% of the Snsr Pwr voltage, the function block outputs its maximum over-pressure outputs of PSI and kPa |
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at 112.50% of the output defined by Bar. |
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The maximum over-pressure output equals 112.50% of the maximum nominal output. The generic function |
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block allows you to specify the pressure range allowed. |
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Outputs |
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Learn how the outputs of the general function block work. |
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Function Block Outputs
Output |
Type |
Range |
Description |
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Status |
U16 |
—— |
Indicates if the Flt Pct value is within range or is set too high. |
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The Flt Pct sets the percentage that the Input voltage can rise above or fall below the function block’s operating range |
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without setting a fault condition. |
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You can change the Flt Pct value (1000 = 10.00%) on the inner page of the Prs_Snsr function block. |
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The Status output uses the bitwise scheme. |
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• 0x0000 |
= Block is OK. |
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• 0x8008 |
= Flt Pct value is too high. |
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© Danfoss | March 2018 |
11062069 | AQ00000100en-US0401 | 5 |
User Manual
PLUS+1® Compliant MBS 1250 Pressure Sensor Function Blocks
Prs_Snsr40b Function Block
Function Block Outputs (continued)
Fault |
U16 |
—— |
Indicates if the voltage on the function block’s Input pin is too low or too high. |
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The Flt Pct sets the percentage that the Input voltage can rise above or fall below the function block’s operating range |
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without setting a fault condition. |
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You can change the Flt Pct value (1000 = 10.00%) on the inner page of the Prs_Snsr function block. |
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The Fault output uses the bitwise scheme. |
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• 0x0000 = Block is OK. |
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• 0x8001 = Input value is too low. |
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• 0x8002 = Input value is too high. |
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PSI |
U16 |
0–35896 |
Indicates pressure in pounds per square inch (PSI). |
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1 = 1 PSI. |
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kPa |
U16 |
0–247500 |
Indicates pressure in kilopascals (kPa). |
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1 = 1 kPa. |
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dBar |
U16 |
0–24750 |
Indicates pressure in decibars (dBar). |
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1 = 1 dBar. |
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Pct |
U16 |
0–11250 |
Indicates pressure as a percent of the function block’s operating range. |
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10000 = 100.00%. |
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Status and Fault Logic
This topic describes how status logic and fault logic are indicated for the function block.
Status Logic
The status code indicates the calibration state of the function block.
Status logic
Condition |
Hex* |
Binary |
Cause |
Response |
Correction |
Invalid setup. |
0x8008 |
1000 |
Flt Pct > 1000 (10.00%). |
Output = 0. |
Reduce Flt Pct. |
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* Bit 16 set to 1 identifies a standard Danfoss status or fault code.
Fault Logic
Learn how fault logic can indicate problems, causes of problems, and solutions.
Fault logic
Condition |
Hex* |
Binary |
Cause |
Response |
Correction |
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Volt(age) is less than [10% of |
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Inspect for open circuit in wire |
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Snsr Pwr] - [Flt Pct of nominal |
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connections to sensor. |
Input value is too low. |
0x8001 |
0001 |
signal range (which is 80% of |
Output = 0. |
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Snsr Pwr)]. |
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Snsr Pwr less than 0. |
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Ensure correct software input is |
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made in the application. |
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Volt(age) is greater than [90% of |
Output is extrapolated beyond |
• Inspect for short circuit in wire |
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Snsr Pwr] + [Flt Pct of nominal |
the maximum value up to 11250 |
connections to sensor. |
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signal range (which is 80% of |
(112.50%). |
• Verify the correct pressure |
Input value is too high. |
0x8002 |
0010 |
Snsr Pwr)]. |
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sensor is used for the |
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application. |
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Snsr Pwr greater than 5250. |
Output = 0. |
Ensure correct software input is |
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made in the application. |
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* Bit 16 set to 1 identifies a standard Danfoss status or fault code.
6 | © Danfoss | March 2018 |
11062069 | AQ00000100en-US0401 |
User Manual
PLUS+1® Compliant MBS 1250 Pressure Sensor Function Blocks
Prs_Snsr40b Function Block
Relationship Between Function Block Input and Output Signals
Use the plot to find out the relationships between the function block's Input voltages and its kPa and Pct outputs.
This function block’s:
•Flt Pct value = 500 (5.00%) and its Snsr Pwr value = 5000 mV.
•Nominal Input voltage ranges between 10.00% (500 mV) and 90.00% (4500 mV) of the Snsr Pwr voltage.
•Nominal pressure output ranges between zero with the Input voltage at 500 mV and a maximum nominal 4000 kPa/100.00% with the Input voltage at 4500 mV.
•Maximum over-pressure output = 4500 kPa with the Input voltage at 5000 mV. (4000 maximum nominal pressure x 112.50% = 4500 kPa maximum over-pressure)
When the Input voltage:
•Drops below 300 mV, the function block outputs an input too low fault. (500 mV – 5% of the 4000 mV nominal input voltage range = fault at 300 mV)
•Rises above 4700 mV, the function block outputs an input too high fault. (4500 mV + 5% of the 4000 mV nominal input voltage range = fault at 4700 mV)
© Danfoss | March 2018 |
11062069 | AQ00000100en-US0401 | 7 |
User Manual
PLUS+1® Compliant MBS 1250 Pressure Sensor Function Blocks
Prs_Snsr40b Function Block
Function Block Connections
Connections you can make with the function block are described.
Function block connections
Item Description
1Sensor voltage (varies with pressure).
2Sensor reference power voltage.
3Function block status.
4Function block faults.
5Pressure in PSI.
6Pressure in kPa.
7Pressure in decibar (dBar)
8Pressure in % of range.
MC Controller—Input Configuration
Configure MFIn and DigAn to accept the input of the function block.
For MC Controllers, you route the function block’s Input through an MFIn or a DigAn. You must change the MFIn and DigAn default configurations to accept this input.
8 | © Danfoss | March 2018 |
11062069 | AQ00000100en-US0401 |
User Manual
PLUS+1® Compliant MBS 1250 Pressure Sensor Function Blocks
Prs_Snsr40b Function Block
Configure the MFIn
Learn how to configure MFIn to accept input from the function block.
1.In the GUIDE template, enter the Inputs page.
2.Enter the MFIn that receives the input.
3.Make the changes that are shown in this figure.
Configure the DigAn
Learn how to configure DigAn to accept input.
1.In the GUIDE template, enter the Inputs page.
2.Enter the page that receives the input.
© Danfoss | March 2018 |
11062069 | AQ00000100en-US0401 | 9 |
User Manual
PLUS+1® Compliant MBS 1250 Pressure Sensor Function Blocks
Prs_Snsr40b Function Block
3. Make the changes that are shown in the following figure.
SC Controller—Input Configuration
Configure MFIn and DigAn to accept the input of the function block.
You route the function block’s Input through an MFIn or a DigAn. You must change the MFIn and DigAn default configurations to accept this input.
Configure the MFIn
Learn how to configure MFIn to accept input from the function block.
1.In the GUIDE template, enter the Inputs page.
2.Enter the page that receives the input.
3.Make the changes that are shown in the following figure.
10 | © Danfoss | March 2018 |
11062069 | AQ00000100en-US0401 |
User Manual
PLUS+1® Compliant MBS 1250 Pressure Sensor Function Blocks
Prs_Snsr40b Function Block
Configure the DigAn
Learn how to configure DigAn to receive input from the function block.
1.In the GUIDE template, enter the Inputs page.
2.Enter the page that receives the input.
3.Make the changes that are shown in the following figure.
© Danfoss | March 2018 |
11062069 | AQ00000100en-US0401 | 11 |
User Manual
PLUS+1® Compliant MBS 1250 Pressure Sensor Function Blocks
Prs_Snsr160b Function Block
This function block configures the output of MBS 1250 pressure sensors with a nominal 0–160 bar [16000 kPa/2320 PSI] range.
Inputs
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Find out how the function block uses a reference voltage and a changing input voltage to produce PSI, |
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kPa, dBar and Pct outputs. |
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Function Block Inputs |
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Input |
Type |
Range |
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Description |
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Snsr Pwr |
—— |
0–5250 mV |
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Inputs a reference voltage that the PLUS+1 controller also applies to the Pin 1 (+ Supply) on the Pressure |
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Transmitter. |
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Input |
—— |
0–5250 mV |
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The function block compares the changing Input voltage with the constant Snsr Pwr reference voltage to produce |
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PSI, kPa, dBar, and Pct outputs. |
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The function block’s nominal operating range is between 10.00% and 90.00% of Snsr Pwr voltage. |
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When the Input voltage reaches: |
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• 10.00% of the Snsr Pwr voltage, the function block’s output starts rising above zero. |
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• 90.00% of the Snsr Pwr voltage, the function block outputs its maximum nominal outputs of 2320 PSI/16000 |
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kPa/10000 (100.00%). |
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• 100.00% of the Snsr Pwr voltage, the function block outputs its maximum over-pressure outputs of 2610 PSI/ |
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18000 kPa/11250 (112.50%). |
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The maximum over-pressure output equals 112.50% of the maximum nominal output (16000 kPa x 112.50% = |
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18000 kPa). |
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12 | © Danfoss | March 2018 |
11062069 | AQ00000100en-US0401 |
User Manual
PLUS+1® Compliant MBS 1250 Pressure Sensor Function Blocks
Prs_Snsr160b Function Block
Outputs
Learn about the outputs of the Prs_Snsr160b function block.
Function Block Outputs
Output |
Type |
Range |
Description |
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Status |
U16 |
—— |
Indicates if the Flt Pct value is within range or is set too high. |
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The Flt Pct sets the percentage that the Input voltage can rise above or fall below the function block’s operating range |
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without setting a fault condition. |
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You can change the Flt Pct value (1000 = 10.00%) on the inner page of the Prs_Snsr function block. |
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The Status output uses the bitwise scheme. |
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• 0x0000 = Block is OK. |
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• 0x8008 = Flt Pct value is too high. |
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Fault |
U16 |
—— |
Indicates if the voltage on the function block’s Input pin is too low or too high. |
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The Flt Pct sets the percentage that the Input voltage can rise above or fall below the function block’s operating range |
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without setting a fault condition. |
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You can change the Flt Pct value (1000 = 10.00%) on the inner page of the Prs_Snsr function block. |
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The Fault output uses the bitwise scheme. |
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• 0x0000 = Block is OK. |
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• 0x8001 = Input value is too low. |
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• 0x8002 = Input value is too high. |
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PSI |
U16 |
0–2610 |
Indicates pressure in pounds per square inch (PSI). |
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1 = 1 PSI. |
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kPa |
U16 |
0–18000 |
Indicates pressure in kilopascals (kPa). |
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1 = 1 kPa. |
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dBar |
U16 |
0–1800 |
Indicates pressure in decibars (dBar). |
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1 = 1 dBar. |
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Pct |
U16 |
0–11250 |
Indicates pressure as a percent of the function block’s operating range. |
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10000 = 100.00%. |
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Status and Fault Logic
This topic describes how status logic and fault logic are indicated for the function block.
Status Logic
The status code indicates the calibration state of the function block.
Status logic
Condition |
Hex* |
Binary |
Cause |
Response |
Correction |
Invalid setup. |
0x8008 |
1000 |
Flt Pct > 1000 (10.00%). |
Output = 0. |
Reduce Flt Pct. |
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* Bit 16 set to 1 identifies a standard Danfoss status or fault code.
© Danfoss | March 2018 |
11062069 | AQ00000100en-US0401 | 13 |
User Manual
PLUS+1® Compliant MBS 1250 Pressure Sensor Function Blocks
Prs_Snsr160b Function Block
Fault Logic
Learn how fault logic can indicate problems, causes of problems, and solutions.
Fault logic
Condition |
Hex* |
Binary |
Cause |
Response |
Correction |
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Volt(age) is less than [10% of |
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Inspect for open circuit in wire |
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Snsr Pwr] - [Flt Pct of nominal |
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connections to sensor. |
Input value is too low. |
0x8001 |
0001 |
signal range (which is 80% of |
Output = 0. |
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Snsr Pwr)]. |
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Snsr Pwr less than 0. |
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Ensure correct software input is |
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made in the application. |
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Volt(age) is greater than [90% of |
Output is extrapolated beyond |
• Inspect for short circuit in wire |
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Snsr Pwr] + [Flt Pct of nominal |
the maximum value up to 11250 |
connections to sensor. |
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signal range (which is 80% of |
(112.50%). |
• Verify the correct pressure |
Input value is too high. |
0x8002 |
0010 |
Snsr Pwr)]. |
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sensor is used for the |
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application. |
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Snsr Pwr greater than 5250. |
Output = 0. |
Ensure correct software input is |
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made in the application. |
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* Bit 16 set to 1 identifies a standard Danfoss status or fault code.
Relationship Between Function Block Input and Output Signals
Use the plot to find out the relationships between the function block's Input voltages and its kPa and Pct outputs.
This function block’s:
•Flt Pct value = 500 (5.00%) and its Snsr Pwr value = 5000 mV.
•Nominal Input voltage ranges between 10.00% (500 mV) and 90.00% (4500 mV) of the Snsr Pwr voltage.
•Nominal pressure output ranges between zero with the Input voltage at 500 mV and a maximum nominal 16000 kPa/100.00% with the Input voltage at 4500 mV.
•Maximum over-pressure output = 18000 kPa with the Input voltage at 5000 mV. (16000 maximum nominal pressure x 112.50% = 18000 kPa maximum over-pressure)
When the Input voltage:
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User Manual
PLUS+1® Compliant MBS 1250 Pressure Sensor Function Blocks
Prs_Snsr160b Function Block
•Drops below 300 mV, the function block outputs an input too low fault. (500 mV – 5% of the 4000 mV nominal input voltage range = fault at 300 mV)
•Rises above 4700 mV, the function block outputs an input too high fault. (4500 mV + 5% of the 4000 mV nominal input voltage range = fault at 4700 mV)
Function Block Connections
Connections you can make with the function block are described.
Function block connections
Item Description
1Sensor voltage (varies with pressure).
2Sensor reference power voltage.
3Function block status.
4Function block faults.
5Pressure in PSI.
6Pressure in kPa.
7Pressure in decibar (dBar)
8Pressure in % of range.
MC Controller—Input Configuration
Configure MFIn and DigAn to accept the input of the function block.
For MC Controllers, you route the function block’s Input through an MFIn or a DigAn. You must change the MFIn and DigAn default configurations to accept this input.
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User Manual
PLUS+1® Compliant MBS 1250 Pressure Sensor Function Blocks
Prs_Snsr160b Function Block
Configure the MFIn
Learn how to configure MFIn to accept input from the function block.
1.In the GUIDE template, enter the Inputs page.
2.Enter the MFIn that receives the input.
3.Make the changes that are shown in this figure.
Configure the DigAn
Learn how to configure DigAn to accept input.
1.In the GUIDE template, enter the Inputs page.
2.Enter the page that receives the input.
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User Manual
PLUS+1® Compliant MBS 1250 Pressure Sensor Function Blocks
Prs_Snsr160b Function Block
3. Make the changes that are shown in the following figure.
SC Controller—Input Configuration
Configure MFIn and DigAn to accept the input of the function block.
You route the function block’s Input through an MFIn or a DigAn. You must change the MFIn and DigAn default configurations to accept this input.
Configure the MFIn
Learn how to configure MFIn to accept input from the function block.
1.In the GUIDE template, enter the Inputs page.
2.Enter the page that receives the input.
3.Make the changes that are shown in the following figure.
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User Manual
PLUS+1® Compliant MBS 1250 Pressure Sensor Function Blocks
Prs_Snsr160b Function Block
Configure the DigAn
Learn how to configure DigAn to receive input from the function block.
1.In the GUIDE template, enter the Inputs page.
2.Enter the page that receives the input.
3.Make the changes that are shown in the following figure.
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User Manual
PLUS+1® Compliant MBS 1250 Pressure Sensor Function Blocks
Prs_Snsr250b Function Block
This function block configures the output of MBS 1250 pressure sensors with a nominal 0–250 bar [25000 kPa/3626 PSI] range.
Inputs
Learn how the function block uses a reference voltage and a changing input voltage to produce PSI, Kpa, dBar and Pct outputs.
Function Block Inputs
Input |
Type |
Range |
Description |
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Snsr Pwr |
—— |
0–5250 mV |
Inputs a reference voltage that the PLUS+1 controller also applies to the Pin 1 (+ Supply) on the Pressure |
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Transmitter. |
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Input |
—— |
0–5250 mV |
The function block compares the changing Input voltage with the constant Snsr Pwr reference voltage to produce |
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PSI, kPa, dBar , and Pct outputs. |
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The function block’s nominal operating range is between 10.00% and 90.00% of Snsr Pwr voltage. |
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When the Input voltage reaches: |
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• 10.00% of the Snsr Pwr voltage, the function block’s output starts rising above zero. |
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• 90.00% of the Snsr Pwr voltage, the function block outputs its maximum nominal outputs of 3626 PSI/25000 |
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kPa/10000 (100.00%). |
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• 100.00% of the Snsr Pwr voltage, the function block outputs its maximum over-pressure outputs of 4080 PSI/ |
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28125 kPa/11250 (112.50%). |
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The maximum over-pressure output equals 112.50% of the maximum nominal output. (25000 kPa x 112.50% = |
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28125 kPa) |
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User Manual
PLUS+1® Compliant MBS 1250 Pressure Sensor Function Blocks
Prs_Snsr250b Function Block
Outputs
Learn about the outputs of the Prs_Snsr250b function block.
Function Block Outputs
Output |
Type |
Range |
Description |
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|
Status |
U16 |
—— |
Indicates if the Flt Pct value is within range or is set too high. |
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The Flt Pct sets the percentage that the Input voltage can rise above or fall below the function block’s operating |
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range without setting a fault condition. |
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You can change the Flt Pct value (1000 = 10.00%) on the inner page of the Prs_Snsr function block. |
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The Status output uses the bitwise scheme. |
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• 0x0000 = Block is OK. |
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• 0x8008 = Flt Pct value is too high. |
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Fault |
U16 |
—— |
Indicates if the voltage on the function block’s Input pin is too low or too high. |
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The Flt Pct sets the percentage that the Input voltage can rise above or fall below the function block’s operating |
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range without setting a fault condition. |
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You can change the Flt Pct value (1000 = 10.00%) on the inner page of the Prs_Snsr function block. |
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The Fault output uses the bitwise scheme. |
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• 0x0000 = Block is OK. |
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• 0x8001 = Input value is too low. |
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• 0x8002 = Input value is too high. |
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PSI |
U16 |
0–4080 |
Indicates pressure in pounds per square inch (PSI). |
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1 = 1 PSI. |
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kPa |
U16 |
0–28125 |
Indicates pressure in kilopascals (kPa). |
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1 = 1 kPa. |
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dBar |
U16 |
0–2812 |
Indicates pressure in decibars (dBar). |
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1 = 1 dBar. |
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Pct |
U16 |
0–11250 |
Indicates pressure as a percent of the function block’s operating range. |
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10000 = 100.00%. |
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Status and Fault Logic
This topic describes how status logic and fault logic are indicated for the function block.
Status Logic
The status code indicates the calibration state of the function block.
Status logic
Condition |
Hex* |
Binary |
Cause |
Response |
Correction |
Invalid setup. |
0x8008 |
1000 |
Flt Pct > 1000 (10.00%). |
Output = 0. |
Reduce Flt Pct. |
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* Bit 16 set to 1 identifies a standard Danfoss status or fault code.
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