The OSC-805H Analog Speed Control Interface Boards offer the system designer the capability of adding low cost, intelligent velocity control to the IM805H Plus Microstepping Hybrid Motor Driver (sold separately). The OSC-805H is powered by a single +24 to +75 VDC power supply, which will also provide power for the IM805H Plus driver. 

The OSC-805H features a digital oscillator for accurate velocity control with an output frequency of up to 100 kilohertz. Output frequency will vary with the voltage level on the speed control input. The speed control input may be adjusted by selecting 15-25kHz PWM, 0 to +5 volts, 4 to 20mA, or 0 to 20mA.

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

The speed control board has 11 setup parameters which are configured using the included Configuration Utility. These enable the user to configure all of the operational parameters of the OSC-805H which are stored in nonvolatile memory.

The OSC-805H has buffered step clock and direction outputs to facilitate cascading of drives. These outputs will follow the primary step clock and direction outputs of the speed control board. The OSC also features Step Clock and Direction inputs for remote connection and control. The use of the Start input switches the device from an external clock input to the internal oscillator.

Wiring is accomplished with a convenient 15 pin removable screw terminal (P1) and an optional Parameter Setup Cable which plugs into the board's 10-pin IDC header (P2). For additional mounting configurations, an L-Bracket is also available.

The IM805H Plus Microstepping Driver plugs easily into a receptacle set in the OSC-805H board. This device allows for a simple, cost-effective solution in applications requiring variable velocity control.