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9.3.5.4 E4: PID control parameters (optional)
In PID control, a negative feedback system is formed with proportional, integral and
derivative operations based on the differences between reference values and their
feedback.
Take the following steps to configure the PID reference:
Step1: Select the PID reference channel
Code
Name
E4.00
PID reference channel
• [E4.00] = 0: Inactive
The PID control function is inactive.
• [E4.00] = 1: Panel potentiometer
The reference value is set by adjusting the potentiometer on the operating panel.
• [E4.00] = 2: Panel button
The reference value is set by E0.07 'Digital setting frequency', which can be
decreased or increased by pressing the <▼> or <▲> buttons on the operating panel
respectively when the frequency converter is running.
• [E4.00] = 3: AI1 analog input
The reference value is set by AI1 analog input.
• [E4.00] = 4: AI2 analog input
The reference value is set by AI2 analog input.
• [E4.00] = 5: X5 pulse input
The reference value is set by pulse signal via X5 input.
• [E4.00] = 7: Communication
The reference value is set by engineering software, PLC or other external devices
via Modbus or other communication.
• [E4.00] = 8: Analog reference E4.03
The reference value is set by parameter E4.03.
• [E4.00] = 9: Speed reference E4.04
The reference value is set by parameter E4.04.
Frequency converter for pump drive uses AI 2 analog input (E4.00=4) as the PID
reference channel.
Hägglunds DOb, RE 15327-WA/05.2017, Installation and maintenance manual, Bosch Rexroth AB
VFD (Variable frequency drive)
Setting range
Default
0...9
0
59/80
Min
Attri.
-
Stop
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