Instruction manual
Table Of Contents
- Preface
- Safety Precautions
- Table of Contents
- Warnings, Cautions and Conformity
- Chapter 1 Drive Model Identification
- Chapter 2 Mounting and Wiring the Inverter
- Chapter 3 Operation using the Keypad
- Chapter 4 Function Codes / Parameters
- Chapter 5 Check Motor Rotation and Direction
- Chapter 6 Speed Reference Command Configuration
- Chapter 7 Operation Method Configuration (Run / Stop)
- Chapter 8 Motor and Application Specific Settings
- Chapter 9 Using PID Control for Constant Flow / Pressure Applications
- Chapter 10 Troubleshooting
- 10.1 Protective Functions
- 10.2 Before Proceeding with Troubleshooting
- 10.3 If Neither an Alarm Code Nor "Light Alarm" Indication Appears on the LED Monitor
- 10.4 If an Alarm Code Appears on the LED
- 10.5 If the “Light Alarm” Indication Appears on the LED Monitor
- 10.6 If an Abnormal Pattern Appears on the LED Monitor except Alarm Codes and "Light Alarm" Indication
- 10.7 If the Inverter is Running on Single-Phase Power
- Chapter 11 Specifications
4-96
E36
Frequency Detection 2 (Refer to E31.) see page 4-94
E37, E38
Current Detection 2/Low Current Detection (Level and Timer) (Refer to E34.) see page4-95
E40, E41
PID Display Coefficient A, B
These function codes specify PID display coefficients A and B to convert a PID command (process command or
dancer position command) and its feedback into mnemonic physical quantities to display.
- Data setting range: -999 to 0.00 to 9990 for PID display coefficients A and B
Display coefficients for PID process command and its feedback (J01 = 1 or 2)
E40 specifies coefficient A that determines the display value at 100% of the PID process command or its feedback,
and E41 specifies coefficient B that determines the display value at 0%.
The display value is determined as follows:
Display value = (PID process command or its feedback (%))/100 (Display coefficient A - B) + B
Example
Maintaining the pressure around 16 kPa (sensor voltage 3.13 V) while the pressure sensor can detect 0 to 30 kPa
over the output voltage range of 1 to 5 V:
Select terminal [12] as a feedback terminal and set the gain to 200% so that 5 V corresponds to 100%.
The following E40 and E41 settings allow you to monitor or specify the values of the PID process command and its
feedback on the keypad as pressure.
PID display coefficient A (E40) = 30.0, that determines the display value at 100% of PID process command or
its feedback
PID display coefficient B (E41) = -7.5, that determines the display value at 0% of PID process command or its
feedback
To control the pressure at 16 kPa on the keypad, set the value to 16.0.