Danfoss MP1 NFPE Operating guide

User Manual

PLUS+1® Compliant

MP1 NFPE Function Blocks

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User Manual

PLUS+1® Compliant MP1 NFPE Function Blocks

Revision history	Table of revisions
	Date	Changed	Rev
	March 2018	Changed hex values for Hardware and General in the fault table. Fixed formatting and layout	0102
		issues.
	February 2018	First edition	0101

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User Manual
PLUS+1® Compliant MP1 NFPE Function Blocks
Contents
MP1_12V_NFPE_CTRL and MP1_24V_NFPE_CTRL Function Blocks
Inputs....................................................................................................................................................................................................	4
Function Block Internal Constants.............................................................................................................................................	4
Function Block Parameters...........................................................................................................................................................	5
Outputs................................................................................................................................................................................................	6
Function Block Connections.........................................................................................................................................................	6
Status and Fault Logic.....................................................................................................................................................................	7
Status Logic...................................................................................................................................................................................	7
Fault Logic.....................................................................................................................................................................................	7
Configuration Values.......................................................................................................................................................................	8
Modify the Config Page...............................................................................................................................................................	11
Relationship between Function Block Input and Output Signals................................................................................	12
Calibrate the Function Block......................................................................................................................................................	13
Calibrate an Individual Parameter......................................................................................................................................	14
Calibrate Function Block Manually.....................................................................................................................................	15
Using Namespaces........................................................................................................................................................................	15
Change Name Space Value...................................................................................................................................................	15
Include Advanced Checkpoint with Namespace in Compiled Application........................................................	16
MC Controller Configurations
Configure an MFOut for Out_A and Out_B..........................................................................................................................	18
SC Controller Configurations
Configure an MFOut for Out_A and Out_B..........................................................................................................................	20
Customizable Service Screens
Pre-Made Service Screen Panel Components.....................................................................................................................	21
All Signals Service Screen............................................................................................................................................................	22
Status and Fault Codes Service Screen..................................................................................................................................	23
Calibration Service Screen..........................................................................................................................................................	24
Overview Service Screen.............................................................................................................................................................	25

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User Manual

PLUS+1® Compliant MP1 NFPE Function Blocks

MP1_12V_NFPE_CTRL and MP1_24V_NFPE_CTRL Function Blocks

The MP1 NFPE function blocks interface between your application and a Danfoss Non-Feedback Proportional Electronic (NFPE) control that is used with Danfoss pumps.

The function block’s output drives coils that control both the flow direction and the flow magnitude through the A and B ports of the pump.

•The NFPE 12V function block is used to calibrate an MP1 12V pump.

•The NFPE 24V function block is used to calibrate an MP1 24V pump.

PLUS+1® I/O modules do not have the fault-checking feedback signals that are needed by these function blocks. Applications that use these function blocks to control an I/O module do not compile.

For more about these function blocks’ connections and signals, see Function Block Connections.

If you are using more than one of these function blocks in your application, see Using the Name Space

Feature.

Inputs

The inputs of the function block are described.

Item	Type	Range	Description
Pwr	Bus	——	Reports controller power supply voltage.
			The function block uses this voltage when it calculates the measured resistance of the control circuit.
Fdbk_A	Bus	——	Reports the status of the MFOut (Multifunction Output) block that receives the function block’s Out_A
			bus.
			(Each MFOut block in the Outputs page has a corresponding MFOut block in the Inputs page that
			reports on its status through a Status bus.)
Fdbk_B	Bus	——	Reports the status of the MFOut (Multifunction Output) block that receives the function block’s Out_B
			bus.
			(Each MFOut block in the Outputs page has a corresponding MFOut block in the Inputs page that
			reports on its status through a Status bus.)
Setup	Bus	——	Allows common configuration values to be applied to multiple function blocks.
			See Configuration Values for more information.
Enable	BOOL	——	Enables the OutputValue signals in the Out_A and Out_B buses.
			• True = OutputValue signals follow the CmdIn signal.
			• False = Holds both OutputValue signals at zero.
			• False/True = Clears latched faults if CmdIn is zero.
CmdIn	S16	±11,000	Specifies the requested speed and direction.
			• +10,000 = Requests the maximum Out_A output.
			• 0 = Requests neutral (stop).
			• –10,000 = Requests the maximum Out_B output.
			+10,000 = +100.00%.
			-10,000 = -100.00%.
			If you want to override the command to the pump, use a value greater than 10,000.

Function Block Internal Constants

The function blocks include constant values for setting limits.

You cannot edit these constants.

Item	12V_CTRL	24V_CTRL	Description
MaxCurr	1,800 mA	920 mA	The maximum current for displacement or proportional control.
Nominal Ω	3.66 Ω	14.2 Ω	The resistance of the load normally connected to Out_A and Out_B.

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PLUS+1® Compliant MP1 NFPE Function Blocks

MP1_12V_NFPE_CTRL and MP1_24V_NFPE_CTRL Function Blocks

Function Block Parameters

This topic describes function block parameters that are stored in the controller’s non-volatile memory.

W Warning

Using the PLUS+1® Service Tool to download new parameter values to an application can result in unexpected and sudden machine movements.

Unexpected and sudden machine movements can result in personal injury and equipment damage.

Always secure your machine against unexpected and sudden movements before you use the PLUS+1® Service Tool to download new parameter values.

You can change these values by:

•Execution of the calibration process.

•Direct access to parameters stored in non-volatile memory through the PLUS+1® Service Tool.

•Recalling default values.

Function Block Parameters

Parameter	Type	Range	Description
NV_A_Thld	U16	CalThldMin to CalThldMax	Calibrated threshold values for Out_A and Out_B.
NV_B_Thld			1000 is	1,000 mA.
NV_A_EndCrnt	U16	Thld + 1 to MaxCurr	Calibrated end current values for Out_A and Out_B.
NV_B_EndCrnt			1000 is	1,000 mA.
NV_A_CalFlg	U8	——	Calibration flags for Out_A and Out_B.
NV_B_CalFlg			• Bit 1	= 1 (0x0001)—Threshold is not calibrated.
			• Bit 2	= 1 (0x0002)—End current is not calibrated.
			The CalFlg signal in the Diag bus contains both pairs of flags,
			with the Out_B bits shifted to positions 3 and 4.

These parameters determine the values used as threshold and end current for each direction during normal operation. However, the values actually applied might be different because:

•Thld and EndCrnt are both subject to range limits.

•Thld is modified by the ThldMult value.

The following intermediate values represent the values that are actually applied:

•EndCrntApplied = MIN (NV_EndCrnt, MaxCrnt).

•ThldApplied = MIN ((NV_Thld × ThldMult), EndCrntApplied).

This assures that:

•EndCrntApplied never exceeds MaxCurr.

•ThldApplied never exceeds EndCrntApplied.

Also note that, while the CalTask value is set to select a calibration task:

•EndCrntApplied = MaxCurr.

•ThldApplied = 1.

The applied values are available in the Diag bus as Thld_A, Thld_B, EndCurr_A, and EndCurr_B.

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User Manual

PLUS+1® Compliant MP1 NFPE Function Blocks

MP1_12V_NFPE_CTRL and MP1_24V_NFPE_CTRL Function Blocks

Outputs

This topic describes the outputs of the function block.

Item	Type	Range	Description
Diag	Bus	——	Outputs a bus with signals that report the following calibration values:
			• CalFlg (Calibration Flag).
			• EndCurr_A (End Current A).
			• FltTimer_A (Fault Timer A).
			• MeasOhm_A (Ohm A).
			• ThldCurr_A (Threshold A).
			• EndCurr_B (End Current B).
			• FltTimer_B (Fault Timer B).
			• MeasOhm_B (Ohm B).
			• ThldCurr_B (Threshold B).
			The Diag bus also has Config and Define sub-buses with signals that report the configuration and
			setup values used by the function blocks.
			Use these signals for troubleshooting.
Status	Bus	——	Reports the function block’s status through a bus with Status_A and Status_B signals
Status_A	U16		Reports status conditions for the A output.
Status_B	U16		Reports status conditions for the B output.
Fault	Bus	——	Reports the function block’s faults through a bus with Fault_A and Fault_B signals.
Fault_A	U16	——	Reports fault conditions for the A output.
Fault_B	U16	——	Reports fault conditions for the B output.
Out_A	Bus	——	Outputs a bus with an OutputValue signal that drives the A coil.
OutputValue	U16	0–30,000	Drives the A coil.
			10,000 = 1000 mA.
Out_B	Bus	——	Outputs a bus with an OutputValue signal that drives the B coil.
OutputValue	U16	0–30,000	Drives the B coil.
			10,000 = 1000 mA.

Function Block Connections

Connections you can make with the function block are described.

Item	Description
1	Reports controller power supply voltage.
2	Reports the status of the MFOut (Multifunction Output) block that receives the function block’s Out_A.
3	Reports the status of the MFOut (Multifunction Output) block that receives the function block’s Out_B.
4	Allows common configuration values to be applied to multiple function blocks.

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User Manual

PLUS+1® Compliant MP1 NFPE Function Blocks

MP1_12V_NFPE_CTRL and MP1_24V_NFPE_CTRL Function Blocks

Item	Description
5	• True = OutputValue signals (inside the Out_A and Out_B buses) follow the CmdIn signal.
	• False = Holds both OutputValue signals at zero.
	• False/True = Clears latched faults if CmdIn is zero.
6	• +10,000 = Requests maximum Out_A output.
	• 0 = Requests neutral (stop).
	• –10,000 = Requests maximum Out_B output.
7	Outputs a bus with signals that report calibration values.
8	Reports the function block’s status.
9	Reports the function block's status
10	Outputs a bus with an OutputValue signal that drives the A coil.
11	Outputs a bus with an OutputValue signal that drives the B coil.

Status and Fault Logic

Status and fault codes indicate the calibration state of the function block and how faults impact the output values of the function block.

Status Logic

Function block status codes indicate the calibration state of the function block.

Status	Hex*	Binary	Cause
Block is not	0x8001	0001	Any CalFlag bit is set to 1.
calibrated.
Calibration active.	0x8002	0010	Enable is True and the CalTask = –2, –1, +1, or +2.
Parameters are	0x8004	0100	(NV_EndCrnt > MaxCurr) or (NV_Thld × ThldMult) > EndCrntApplied for either direction A or
corrupt.			direction B.
			The actual tests in the software are:
			• EndCrntApplied ≠ NV_EndCrnt—This happens when NV_EndCrnt > MaxCurr. It means that
				EndCrntApplied = MaxCrnt.
			• ThldApplied = EndCrntApplied—This happens when (NV_Thld × ThldMult) ≥ EndCrntApplied).
Invalid setup/	0x8008	1000	Any of the following setup and configuration values are not within their valid ranges:
calibration.			• CalThldMin (for either direction).
			• CalThldMax (for either direction).
			•	ThldMult.
			•	FltDelay.
			•	CalTask.
			Also reported while PinStatus reports a configuration error (value =1) for either direction A or direction
			B.
Value too low.	0x8040	0100 000	Threshold calibration is active and the OutputValue < CalThldMin for the calibration direction.
Value too high.	0x8080	1000 000	Threshold calibration is active and the OutputValue > CalThldMax for the calibration direction.

* Position of set bit in a 16 bit fault or status code. Bit 1 is the least significant bit. Bit 16 set to 1 identifies a standard Danfoss status code or fault code.

Fault Logic

This topic describes function block faults and how the faults affect OutputValue.

The function block’s Out_A and Out_B buses each contain an OutputValue signal that drives the forward and reverse coils on the NFPE control.

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User Manual

PLUS+1® Compliant MP1 NFPE Function Blocks

MP1_12V_NFPE_CTRL and MP1_24V_NFPE_CTRL Function Blocks

Fault	Hex*	Binary	Cause	Response	Delay†	Latch‡	Correction
Input value too low.	0x8001	0001	CmdIn < -10,000.	OutputValue held	No.	No.	Fix CmdIn.
				at 0.
Input value too high.	0x8002	0010	CmdIn > +10,000.
Open circuit.	0x8004	0100	Measured Ω >		Yes.	Yes.	Check for open circuit or high
			(Nominal Ω x 3).§				resistance between output pin
							and ground. See Function Block
							Internal Constants for more
							about Nominal Ω.
Short circuit.	0x0008	1000	Measured Ω <				Check for short circuit or low
			(Nominal Ω ÷ 3).§				resistance between output pin
							and ground. See Function Block
							Internal Constants for more
							about Nominal Ω.
Hardware.	0x8020	0010 0000	Current exceeds				Correct cause of overload.
			continuous or peak
			rating.
General.	0x8040	0100 0000	Current flow				Correct open ground
			between Out_A				connection.
			and Out_B.
			Possible cause is
			loss of a common
			ground
			connection.

* Position of set bit in a 16 bit fault or status code. Bit 1 is the least significant bit. Bit 16 set to 1 identifies a standard Danfoss status code or fault code.

† A delayed fault gets 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.

‡ A latched fault report maintains until the latch is released. A release is attempted each time that Enable becomes True while CmdIn is 0.

§ The nominal Ω value is an internal constant of each function block. It can be viewed, with other defined constants, in the Define sub-bus of the Diag bus. The other constants specify the maximum current and the range limits for configuration values.

Configuration Values

The default Config page contains constant values that set the function block’s operating characteristics. Typically, you do not have to change any of these values for the correct operation of the function block. Optionally, you can:

•Modify the constant values on this page.

•Replace some or all of the constant values on this page with signals brought in on the Setup bus, which is connected to the function block’s Setup input. For more information, see Modify the Config Page.

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User Manual

PLUS+1® Compliant MP1 NFPE Function Blocks

MP1_12V_NFPE_CTRL and MP1_24V_NFPE_CTRL Function Blocks

Default Values for MP1_12V_NFPE_CTRL Function Block

Default Values for MP1_24V_NFPE_CTRL Function Block

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