Product Description:

The NY4120 linear drive is manufactured by Bosch Rexroth Indramat and belongs to the NY Linear Drives series. The module supplies power and signal conditioning for compact electromechanical stages, enabling coordinated movement of coupled carriages or push-rod actuators in automated assembly, test, or packaging lines.

In operation, the controller coordinates 2 axes, each supplied from a motor bus that accepts up to 73 V. The constant load current drawn per axis is 10 A, while transient moves can call for 20 A for short intervals; an electronic trip halts drive output at 22 A to protect conductors. Two differential encoder channels for each axis are provided, totaling 6 RS-422 inputs for closed-loop feedback. Six 5 V digital inputs handle limit switches or state sensors, and the general-purpose digital interface offers 8 inputs and 4 transistor outputs for machine sequencing. High-speed tasks such as registration marks are routed through the fast I/O group with 2 inputs and 2 outputs latched at microsecond scale. For process signals, the board includes two analog inputs that can be configured for 4–20 mA or ±10 V modes and two analog outputs for actuator commands.

Thermal monitoring disengages the drive when the heatsink reaches 105 °C, avoiding drift in semiconductor characteristics. The pair of analog inputs are digitized with a 12 bit converter, giving 4096 code steps across either the 4–20 mA span or the ±10 V range. Command signals leaving the drive benefit from a 16 bit digital-to-analog stage that yields fine current or voltage modulation for servo valves or amplifiers. When voltage scaling is selected, the circuit operates around a ±10 V reference, allowing direct connection to standard motion controllers. Combined with the two analog outputs, six encoder channels, and multiple digital paths described earlier, these protections and resolutions support precise control while minimizing external signal conditioning.