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E4 Help Desk

P-37..P-46 Access, Display Scaling & PI Control

Access, Display Scaling & PI Control

Par.

Description

Minimum

Maximum

Default

Units

P-37

Level 2 Access Definition

0

9999

0

-

P-38

Parameter Access Lock

0

1

0

-

0: Unlocked. All parameters can be accessed and changed.

1: Locked. Parameter values can be displayed, but cannot be changed, except P-38.

P-39

Positive/Negative Logic Select

0

1

0

-

Controls whether digital inputs are positive logic or negative.

NOTE: STO inputs are always positive logic and are not affected by this parameter.

0: Positive Logic

1: Negative Logic

P-40.0

Display Scaling Source

0

4

0

-

0: Output Speed

1: Output Current

2: Terminal DA3 Value

3: PI Feedback

4: DC Bus Voltage

P-40.1

Display Scaling Factor

0.000

30.000

0.000

-

Allows the drive to display an alternative output unit scaled from an existing parameter, e.g., to display speed in metres per second based on the output frequency.

Value taken from the data source set in Display Scaling Source (P‑40.0) is first multiplied by this value then divided by Display Scaling Divide (P‑40.2).

If you want to just divide the value, set this to 1.000 and adjust P‑40.2 accordingly.

This function is disabled if this parameter is set to 0.

P-40.2

Display Scaling Divide

1.000

100.000

1.000

-

P-41

PI Controller Proportional Gain

0.0

30.0

1.0

-

P-42

PI Controller Integral Time

0.0

30.0

1.0

s

P-43.0

PI Operation

0

1

0

-

0: Discontinuous. On disable, PI controller disabled.

1: Continuous. PI runs continually regardless of drive state.

P-43.1

PI Mode

0

1

0

-

0: Direct. when the feedback signal drops, the motor speed should increase.

1: Inverse. when the feedback signal drops, the motor speed should increase.

P-43.2

PI Wake Mode

0

1

0

-

0: Wake at Minimum

1: Wake at Maximum

P-44

PI Reference (Setpoint) Source Select

0

2

0

-

0: Digital Fixed Value (P-45 used)

1: Analog Input (DA4)

2: Fieldbus Process Data

P-45

PI Fixed Reference

P-46.2

P-46.3

0.0

-

P-46.0

PI Feedback Source

0

5

0

-

0: 2nd Analog Input (DA3)

1: 1st Analog Input (DA4)

2: Motor Load Current (% of P-08)

3: DC Bus Voltage

4: 1st Analog Input (DA4) - 2nd Analog Input (DA3)

5: Maximum Value between 1st Analog Input (T6) and 2nd Analog Input (T4)

P-46.1

PI Feedback Function

0

1

0

-

0: Direct

1: Inverse

P-46.2

PI Feedback Sensor Minimum Signal

-1000.0

P-46.3

0.0

-

P-46.3

PI Feedback Sensor Maximum Signal

P-46.2

1000.0

100.0

-

P-46.2 and P-46.3 are used together to define the connected sensor range for PI operation, so that all PI related parameters can be set in Engineering units.

Example : If you have a sensor that measures 2‑10 bar.

Enter 2.0 in P‑46.2 and 10.0 P46.3.

Tip

For more information on PI operaton > PI Operation

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