Moog DS2110, Инструкция по установке и эксплуатации

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CHAPTER 5.0 Functional Overview 5-16
CDS7324 (FORMERLY LSF-0819)
Rev. A INSTALLATION & USER’S MANUAL
5.6 Encoder Input
The encoder input allows the connection of various absolute and incremental encoders for drive position
feedback, velocity feedback or for motor commutation (rotor angle feedback).
The encoder signals of an encoder with analogue sinusoidal output signals can be used for increased resolution
through angle interpolation within one optical increment.
Channel A
analogue
Channel B
analogue
Zero
Marker
Voltage
Angle
0
Angle
0
Count
Voltage
Angle
0
Channel A
digital
Channel B
digital
Level
Angle
0
1
Level
Angle
0
1
0 1 2 3 4 5 6 -4 -3 -2 -1 ... ...
one optical
increment
Voltage
Figure 5.3: encoder signals
The picture shows typical analogue encoder signals and the digital signals derived from the analogue signals.
The direction of rotation shown is counter-clockwise, so that channel B leads channel A. By counting every
digital signal transition, the number of counts per mechanical revolution is four times the number of optical
increments. Using the analogue input signals the angle in between the increments can be interpolated to
achieve much higher resolution.
5.6.1 Encoder Configuration
5.6.1.1
Encoder Supply Voltage
The supply voltage of the encoder can be selected with the parameter
encoder_supply (Field Number 1704). It
has to be set first to ensure proper operation. The following values are valid for encoder_supply :
5 - +5 Volts supply voltage
8 - +8 Volts supply voltage
12 - +12 Volts supply voltage
All other values will return an error when written.