• Full featured Industrial quality DC servodrive
• 32 bit PID control with 16 bit RISC processor
• Can run directly off line voltage (170 Vdc)
• Warning output signals excessive motor load
• Hardware current protected drive
• Trip output signals drive has tripped
• Store up to 4 motor configurations, Selectable by jumpers
• Opto isolated power and control sections
• Onboard fuse (protect motor and for saftey)
• 1,2,4,8 step multiplier (or any size)
• Settings are programmable by RS232
• Replaceable Power Mosfets and drivers
• Very efficient cool running drive.
• Stackable cardtype mounting
• Heavy 6061 aluminum heatsink base
• 60 Day warrantee
• Price $239

There are a number of Step-servo drives on the market today. Most of these drives are lacking features that are necessary for a reliable servo system that warns the control software that the motor is pushing too hard or over its limit. Instead these drives either Fault and remove power to the motor, causeing an uncontrolled motor, or fail to stop the controller at all (open loop).

The Viper drive has features such as soft error fault that will warn the controller to stop, if the motor is pushing too hard. Also a hard error trip-point can also be set to disable the motor if a severe over-current is detected. Other features are programable error warning range, setable from +-64 counts to +-2000 counts.

Size does matter. Competitors drives may be small and cute, but most have main capacitors rated too small. These small capacitors will run hot and cause drive failure in the future. Also the Viper uses socketed driver chips for ease of replacement. Surface mounted drivers cannot be replaced so smaller drives are disposible. A fuse in the drive is very important to protect the expensive servo-motor and for saftey.

The Viper 200 uses 250 volt 55 amp mosfets output transisters for more ruggedness. Also hardware current protection protects the output from excessive current.