AR4000 User’s Manual
39
LLL004001 – Rev 2.7
15.3 Scanner Installation and Use
If the scanner was ordered and delivered with an AccuRange 4000, the sensor
will be mounted together with the scanner. If they were ordered separately, the
sensor should be mounted so that the beam aligns with the motor axis, both in
position and angle. If the scanner is ordered with the High Speed Interface, the
motor encoder comes connected to the appropriate pins from the interface
connector. For connection to other encoder readers, the encoder pinout is shown
below.
The index pulse is a brief pulse lasting 1/1000 of a revolution, occurring once per
revolution. Channels A and B are standard quadrature signals, 50% duty cycle
square waves, 90 degrees out of phase.
Do not attempt to remove the encoder from the motor. Encoder alignment is
critical and will be lost. If necessary, the mirror can be removed from the motor
shaft by loosening the two set screws holding the mirror sleeve to the shaft, but
increased vibration at high motor speeds may result after reinstallation.
The mirror should be kept clean and free of excessive dust, fingerprints, etc. It
may be cleaned with a soft cloth and alcohol or water.
Pin
Connector Wire Color
Function
1
Black (left side of encoder,
Ground
viewed from top)
2
Blue
Index Pulse
3
White
Channel A
4
Red
Vcc (+5 Volts)
5
Brown
Channel B
Encoder Pinout
Applied Voltage
Scanner Speed
Scanner Current
5.0
1050 rpm
45 mA
10.0
2100 rpm
90 mA
12.0
2600 rpm
110 mA
Typical Scanner Speed and Power