ESP302 Controller Start-Up Manual
A1270B1 - EDH0411En1021 – 02/20 34
Motor + This output must be connected to the positive lead of the DC motor. The voltage seen at
this pin is pulse-width modulated with maximum amplitude of 47 VDC.
Motor - This output must be connected to the negative lead of the DC motor. The voltage seen at
this pin is pulse-width modulated with maximum amplitude of 47 VDC.
+ Phase 1 This output must be connected to Winding A+ lead of a two-phase stepper motor. The
voltage seen at this pin is pulse-width modulated with maximum amplitude of 47 VDC.
- Phase 1 This output must be connected to Winding A- lead of a two-phase stepper motor. The
voltage seen at this pin is pulse-width modulated with maximum amplitude of 47 VDC.
+ Phase 2 This output must be connected to Winding B+ lead of a two-phase stepper motor. The
voltage seen at this pin is pulse-width modulated with maximum amplitude of 47 VDC.
- Phase 2 This output must be connected to Winding B- lead of a two-phase stepper motor. The
voltage seen at this pin is pulse-width modulated with maximum amplitude of 47 VDC.
+ Travel limit This input is pulled-up to +5 V with a 2.2 kΩ resistor by the controller and represents
the stage positive direction hardware travel limit.
- Travel limit This input is pulled-up to +5 V with a 2.2 kΩ resistor by the controller and represents
the stage negative direction hardware travel limit.
Encoder A & /A These A and /A inputs are differential inputs. Signals are compliant with RS422
electrical standard and are received with a MC3486 differential line receiver. A resistor
of 120 Ω adapts the input impedance. The A and /A encoder signals originate from the
stage position feedback circuitry and are used for position tracking.
Encoder B and /B These B and /B inputs are differential inputs. Signals are compliant with RS-422
electrical standard and are received with a MC3486 differential line receiver. A resistor
of 120 Ω adapts the input impedance. The B and /B encoder signals originate from the
stage position feedback circuitry and are used for position tracking.
Index & /Index These Index and /Index inputs are differential inputs. Signals are compliant with RS422
electrical standard and are received with a MC3486 differential line receiver. A resistor
of 120 Ω adapts the input impedance. The Index and /Index signals originate from the
stage and are used for homing the stage to a repeatable location.
GND Ground reference.
Origin This input is pulled-up to +5 V with a 2.2 kΩ resistor by the controller. The Origin
signal originates from the stage and is used for homing the stage to a repeatable
location.
+5 V (0.25A max.) +5 VDC supply is available from the driver. This supply is provided for stage home,
index, travel limit, and encoder feedback circuitry.
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