IMS USC-48-2 DUAL Universal Speed Control Interface Board

The USC-48-2 Universal Speed Control Interface Board offers the system designer a low cost, intelligent velocity control with dual on-board Microstepping Drives. The USC-48-2 is powered by a single +12 to +48 VDC power supply.

The USC-48-2 features a digital oscillator for accurate velocity control with an output frequency of up to 100 kilohertz. Output frequency will vary with the signal applied to the speed control inputs. The speed can be adjusted by a 15 - 25kHz PWM, or analog input of 0 to +5 volts, 4 to 20 or 0 to 20mA.

The Speed Control Board incorporates two 1.6Amp RMS per phase drives. This gives users a single pulse source synchronized to the internal clock or external step and direction input. With this feature, wiring and controlling machines with large tables or wide conveyors requiring the use of dual motors can be simplified, and there is no drift between motor speeds.

One of the two speed inputs available with the USC-48-2 can be selected using the speed1/speed2 input. This allows the user to have two preset speeds that can be selected digitally. The USC-48-2 will then accelerate/decelerate to the new value.

Optional on-board dual 10k potentiometers are available for the USC-48-2. These 15-turn potentiometers help to reduce wiring where remote access is not required.

There are two basic modes of operation: bidirectional and unidirectional. In bidirectional mode, both speed and direction are controlled by the speed control input. In unidirectional mode, only velocity is controlled by the speed control input; direction is controlled by a separate input.

In addition, the USC-48-2 has buffered step clock and direction outputs to facilitate cascading of drives. These outputs will follow the primary step clock and direction signals of the speed control board.

Wiring is accomplished with convenient keyed and locking pin and receptacle connectors (P1, P2 & P3) and an optional Parameter Setup Cable which plugs into the board's 10 pin IDC header (P4).

Prototyping Interface Cables for power and signal are also available. Mounting the USC-48-2 is accomplished easily with an L-Bracket which also functions as a heat sink. Optional din rail mounting brackets may be ordered.

The speed control board has 12 setup parameters which are configured using the included Configuration Utility. These enable the user to configure all of the operational parameters of the USC-48-2 which are stored in nonvolatile memory.

Feature Set

  • Two On-Board 1.6A/Phase Microstepping Drives
  • Digital Oscillator for Accurate Speed Control
  • Optically Isolated Inputs will Accept +5 to +24 VDC Signals, Sourcing or Sinking
  • Selectable Speed Control from One of Two 0 to +5 VDC Inputs (One Configurable as 4 - 20 or 0 - 20mA) or a 15 to 25kHz Isolated PWM Input, all with Programmable Center Point

  • Low Cost
  • Extremely Compact (3.5 x 3 x 1.25 inches) (89 x 76 x 32 mm)
  • Configurable:
    - Motor Run/Hold Current
    - Speed Control Input Source
    - Motor Rotation vs. Direction Input
    - Acceleration/Deceleration
    - Initial and Max Velocity
    - Microstep Resolution to 256
      microsteps/Full Step
  • Operation Modes: Bidirectional and Unidirectional Velocity Control

  • Step Clock and Direction Out for Cascading Multiple Drives
  • Single Supply +12 to +48 VDC
  • Keyed and Locking Pin and Receptacle Connectors

  • Graphical User Interface (GUI) for Quick and Easy Parameter Setup
  • Optional On-Board Potentiometers

  • Optional Din Rail Mounting Brackets


Technical Documentation

USC-48-2 Datasheet