ElmoMC SimplIQ Analog Servo Amplifiers-Violin Operating Manual - Manual (Page 9)

VIO-Velocity - Operating Manual Rev 09/09. Elmo Motion Control
Page 5
Servo Amplifier Description
The VIO-Velocity extends the VIO line by adding a velocity loop daughter board. This series of miniature
servo amplifiers for DC brush motors incorporate custom mixed analog/digital ICs and hybridized power
stage.
The product meets UL508c and the suitable CE regulations.
The power stage is implemented on a single ceramic substrate. This design enables very high thermal
conductivity, high current carrying capacity, better EMC and good mechanical strength. The control section
is implemented by dedicated custom ICs that contribute to higher and improved performance.
2.1
Standard Features
Operation in current mode or velocity mode
Armature feedback with I*R compensation,
Tachometer feedback
Internal DC to DC converter allows for operation from a single supply
Zero dead band
Excellent linearity
Motor current monitor
Current gain change for low inductance motors
Current feedback multiplier for low current motors
External continuous and peak current limits adjustments
Latch mode for the protective features
Forward and Reverse limit switches
Socketed components for adjusting:
•
Continuous current limit
• Peak current limit
• Command scaling
• Tachometer scaling
• Velocity loop tuning
Full array of diagnostic LED’s
Additional capacitance on the DC bus
DIP switches for selecting functions such as CGC, CFM, Latch mode, Directional limits, and
Enable
An encoder feedback option card can be installed on the basic velocity board when required.
2.2
Fault Protection
• Short between the outputs or between each output and the Power Return.
• Over temperature
• Under/over voltage