Automation Direct DURApulse GS4 User Manual page 201

P4.52 AO1 Negative Value Handle
Range/Units (Format: 16-bit binary)
0: Absolute Value
1: 0V When Negative
2: Offset 5V = 0 Value
This parameter setting can be used for determining AO1 output direction in Forward and Reverse,
but the positive and negative output voltages can be used for other types of signals as well.
P4.53 AO1 0~20mA/4~20mA Selection
Range/Units (Format: 16-bit binary)
0: 0~20mA
1: 4~20mA
This parameter determines the scaling and offset for Analog Output 1 (AO1).
See also DIP switch AO1 located above the control terminal strip.
• If using AO1 as a 0~20mA output, set P4�53=0�
• If using AO1 as a 4~20mA output, set P4�53=1�
• If using AO1 as a 0~10V or ±10V output, set P4�53=0�
Although AO1 is an analog voltage output, it can emulate an analog current output.
If 500Ω* of total resistance is connected across AO1 and ACM, the output will effectively become
an analog current output.
Selecting 1: 4~20mA output will adjust the range so that 0~100% will be output as 2~10V (can be
used with an external 500Ω resistance to create a 4~20mA output).
This analog output can be set to fixed levels (thru comms, keypad, etc.). P4.50 must be set for 13:
Fixed Voltage to use AO1. If writing via comms, the values are 0~10000 for 0~100.00%. (Gains =
100%, 0~20mA selection = 0~20mA, Negative value handle ≠2)
P4.60 works with the setting "#13 Fixed Voltage" of P4.50 to set up the constant voltage at AO1.
Example: Set P4.60 to 0~100.00% to correspond to the 0~10V of AO1.
*NOTE: The 500 Ohms across AO1 and ACM must include the other device's analog input circuitry.
• Example: GS4's AI2 input circuit resistance is 250Ω. If you want to connect output AO1 to input
AI2 (configuring AI2 parameters and DIP switch as a 0~20mA input), you must add a 250Ω resistor
between terminals AO1 and AI2 for a total resistance of 500Ω.
Related parameters: P4.50 (Analog Output 1), P4.60 (AO1 Output Constant Level)
DURA
GS4 AC Drive User Manual – 1st Ed, Rev A - 10/20/2017
pulse
10V (20mA)
0V
(0mA)
P4.52=0
P4.56=0
Chapter 4: AC Drive Parameters
Type
♦R/W
Default
0
10V (20mA)
0V
(0mA)
P4.52=1 P4.52=2
P4.56=1 P4.56=2
Type
R/W
Default
0
Hex Addr Dec Addr
0434 41077
10V (20mA)
5V
(12mA)
Hex Addr Dec Addr
0435 41078
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