Delta RMC151 Manual de usuario Pagina 87

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3 Controller Features
A control axis has a Control Output and controls either zero, one or two quantities, such as
Position, Pressure, or Force. The controlled quantity is provided by a feedback input. A control
axis is capable of controlling a system because it has a Control Output.
There are three types of control axes:
1. One-Input Control Axis
A control axis that controls a single quantity, such as position or pressure, is called a one-
input control axis.
One-Input
Control
Axis Types
Required
Inputs
Required
Control
Outputs Transducer Types
Position
1
1
MDT, SSI, Analog,
Quadrature, Resolver
Velocity
1
1
Analog Voltage or Current
Pressure
1
1
Analog Voltage or Current
Force
1 or 2
1
Analog Voltage or Current
Note:
A force input requires 1 analog input if a load cell is used, and 2 analog inputs for
differential force on a hydraulic cylinder. In the differential case, it is still considered one
input, since it is only one quantity.
2. Two-Input Control Axis
A control axis that controls two quantities, such as position and pressure, is called a two-
input control axis. Notice that the secondary inputs must always be analog inputs.
Two-Input
Control
Axis Types
Required
Primary
Inputs
Required
Secondary
Analog
Inputs
Required
Control
Outputs
Position-Pressure
1
1
1
Position-Force
1
1 or 2
1
Position-
Acceleration
1
1 or 2
1
Velocity-Pressure
1
1
1
Velocity-Force
1
1 or 2
1
Velocity-
Acceleration
1
1 or 2
1
Note:
A force input requires 1 analog input if a load cell is used, and 2 analog inputs for
differential force on a hydraulic cylinder. In the differential case, it is still considered one
input since it is only one quantity, although it requires two physical analog inputs.
3. Output Only Axis (No Input)
An Output Only axis has a Control Output and does not have any inputs. Control Outputs
are available only on an axis module.
Creating a Control Axis
deltamotion.com 67
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