LS-421 is a 4-axis multipurpose servo controller with built-in power amplifiers for DC motors with quadrature incremental encoders. It is designed to meet the requirements for high precision and high reliability essential to industrial applications. The board is designed as a plug-in board for PC/AT compatible computers with ISA bus. The unique FlexWare™ design allows flexible wiring and pin assignment to meet specific requirements and to achieve compatibility with the existing hardware. To attain higher reliability of operation in industrial environments, all inputs and outputs are optoisolated from the computer ground.

4 servo controlled motion axes	Modular design
Bus interface: ISA	DSP technology based on PMD MC 1401A chip
10-bit PWM @ 25KHz	S-curve velocity profile
Programmable output current limit / shutdown	Quadrature incremental encoder interface
Multi-turn absolute position encoder interface	Emergency stop input
Additional general purpose optoisolated inputs and outputs	Flexible wiring

LS-221BL is a 2-axis sinusoidal servo controller with built-in power amplifiers for brushless commutated motors with quadrature incremental encoders. It is designed to meet the requirements for high precision and high reliability essential to industrial applications. The board is designed as a plug-in board for PC/AT compatible computers with ISA bus. The unique FlexWare™ design allows flexible wiring and pin assignment to meet specific requirements and to achieve compatibility with the existing hardware. To attain higher reliability of operation in industrial environments, all inputs and outputs are optoisolated from the computer ground.

2 servo controlled motion axes	Modular design
Bus interface: ISA	DSP technology based on PMD MC 1231A chip
Sinusoidal commutation	S-curve velocity profile
Programmable output current limit / shutdown	Quadrature incremental encoder interface
Multi-turn absolute position encoder interface	Emergency stop input
Additional general purpose optoisolated inputs and outputs	Flexible wiring