If you are using 0-10 volts or 0-5 volts for your position or Compliance
Feedback sensors, this terminal would be used to connect the ground pin
of your sensor.
B) #2: Negative (-) 10 Volt Reference
(One Screw Terminal per axis for Four Screw Terminals in total)
This screw terminal (Position #2) is is the output the negative 10 volt
reference. This is where you will normally connect the 'retract' end of a
position sensing potentiometer. The other end of the potentiometer will
normally be connected to the positive 10 volt terminal (Position #5) and the
potentiometer wiper to position feedback input (terminal #3)
This output is meant only to provide enough current to power an
external device. It can only be used as an -10 vdc reference to a
potentiometer or similar resistive load.
The OpAmp that drives the positive and negative reference output pins
for each Servo axis is socketed for easy replacement incase it gets
damaged by a miswire during installation.
C) #3: Position FeedBack Input
(One Screw Terminal per axis for Four Screw Terminals in total)
This screw terminal (Position #3) is connected to the Br-EFB's sixteen
bit resolution Analog to Digital converter (ADC). This input is sampled at
approximately 100KHz.
All potentiometers have three wire leads. The first of these connects to
the 'retract' end of the resistive sensing element (which is usually a piece
of conductive plastic). The second wire connects to the 'extend' end of the
resistive element. The third wire is connected to the 'wiper', which moves
up and down the resistive element.
If you measure between the 'retract' and 'extend' leads, the resistance
will not change as you move the wiper. The resistance should be close to
the value you specified for the resistance of this potentiometer (typically
10K ohms).
Gilderfluke & Co.• 205 South Flower Street • Burbank, California 91502 • 818/840-9484 • 800/776-5972 • fax 818/840-9485
Br-EFB Manual / May 22, 2018 3:28 PM / page 43 of 142
