Automation Direct DURApulse GS4 User Manual

Page 4–122
DURApulse GS4 AC Drive User Manual – 1st Ed, Rev A - 10/20/2017
Chapter 4: AC Drive Parameters
analog inPut ParaMeter exaMPle 10: inverse analog sPeed reFerence
This example illustrates the use of an inverse analog speed reference to the drive. The minimum
analog reference value corresponds to the full forward output frequency of the drive.
• Minimum Frequency Reference = 60Hz
• Maximum Frequency Reference = 0Hz
For AI1, AI2, and AI3: P4.24 (AI V/Hz Calculated Selection) MUST BE SET TO ZERO (All Inputs
Use Bias and Gain) TO ENABLE BIAS AND GAIN CALCULATIONS.
Calculations (see page 4–112 for formulas)
A) Drive Maximum Output Frequency = P0.04 = (1750 rpm / 1750 rpm) x 60Hz = 60Hz
B) Analog Offset % = [(-60Hz) / (60Hz - 0Hz)] x 100 = -100%
Analog Input (AIx) AI1 AI2 AI3
AIx Bias Parameter
P4�10 P4�15 P4�19
C) Analog Gain % = [(60Hz - 0Hz) / 60Hz] x 100 = 100% = AIx Input Gain
Analog Input AI1 AI2 AI3
Polarity
Positive (+) Positive (+) Positive (+) Negative (-)
AIx Gain Parameter
P4�12 P4�17 P4�21 P4�22
D) Mid-point Frequency = [(60Hz - 0Hz) / 2] + 0Hz = 30Hz
Parameter Settings
Analog Input AI1 or AI2 or AI3
Parameter Settings
Polarity
Positive (+) Positive (+) Positive (+) Negative (-)
AIx Bias Parameter
P4�10 P4�15 P4�19 -100�0%
AIx Polarity Parameter
P4�11 P4�16 P4�20 1: Positive Offset
AIx Gain Parameter
P4�12 P4�17 P4�21 P4�22 100�0%
Reverse Run Parameter
P4�09 0: Digital FWD/REV
Drive Max Output Freq
P0�04 60Hz
Results
Maximum
Output
Frequency
0Hz
60Hz
30Hz
0V 5V 10V
-10V 0V 10V
0mA 10mA 20mA
4mA 12mA 20mA

Automation Direct DURApulse GS4 Specifications

General

Brand	Automation Direct
Model	DURApulse GS4
Category	Controller
Language	English