7.15 Digital and analog inputs and outputs
7.15.1 Analog Inputs (X3B)
The servo amplifier is fitted with two programmable differential inputs for analog set
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points. AGND (X3B/13) must always be joined to controls-GND as a ground reference.
Technical characteristics
— Differential-input voltage max. ± 10 V
— Ground reference AGND, terminal X3B/13
— Input resistance 150 kW
— Common-mode voltage range for both inputs ± 10 V
— Update rate 62.5 µs
Analog-In 1 input (terminals X3B/10-X3B/9)
Differential input voltage max. ± 10 V, resolution 16 Bit (accuracy 13 Bit), scalable.
Standard setting: speed setpoint
Analog-In 2 input (terminals X3B/12-X3B/11)
Differential input voltage max. ± 10 V, resolution 16 Bit (accuracy 13 Bit), scalable.
Standard setting: torque setpoint
Application examples for setpoint input Analog-In 2:
— adjustable external current limit
— reduced-sensitivity input for setup or jog operation
— pre-control, override
If an input was freshly assigned to a pre-programmed function, then the data set must be
saved in the EEPROM of the servo amplifier and a reset has to be carried out (with the
amplifier setup software for example).
Defining the direction of rotation
Standard setting : clockwise rotation of the motor shaft (looking at the shaft end)
— Positive voltage between terminal X3B/10 (+ ) and terminal X3B/9(-)or
— Positive voltage between terminal X3B/12 (+ ) and terminal X3B/11(-)
To reverse the direction of rotation, swap the connections to terminals X3B/10-X3B/9 or
X3B/12-X3B/11 respectively, or change the COUNT DIRECTION parameter in the “Feed
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back” screen page.
98 S701x2-S724x2 Instructions Manual
Electrical installation 07/2014 Kollmorgen
S700