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Compumotor's Award-Winning Zeta Series Microstepping Drives
 Zeta Series microstepping drives are stand-alone, packaged microstepping drives that incorporate breakthrough techniques known as Active Damping™ (patented) and Electronic Viscosity™ (patent pending), available in 4 different power versions:ZETA4, ZETA4-240, ZETA8 and ZETA12.
Designed for reliability, the ZETA drive family offers premier
quality and performance while being easy to use and apply.
ZETA drive family meets the need for global solutions:
The ZETA4, ZETA8, and ZETA12 operate at 120VAC and
provide 4A, 8A, and 12A respectively.
The ZETA4-240, ZETA8, and ZETA12 comply with the Low
Voltage [LVD (EN61010)] and Electromagnetic Compatibility
[EMC (CISPR22/EN55022 Class B)] directives making it an
excellent choice for machines built in or shipped to the
European community. By designing the drive to meet the EMC
Class B’s rigid standards, the ZETA4-240, ZETA8, and ZETA12
also meets North America’s FCC Class B emissions test
making it the solution for low-noise applications. The ZETA4-
240, ZETA8, and ZETA12 have also received UL approval.
The ZETA4-240 can be used for low- and high-power
applications. For low-power applications, the ZETA 4-240
operates at 120VAC to provide the same performance as the
ZETA4. For high-power applications, the ZETA4-240 runs off
240VAC to provide the same performance of an 8 AMP drive
operating at 120 VAC.
Performance
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Standard step-and-direction input or CW/CCW input
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Torque from 43 oz-in (0.30 N-m) to 3480 oz-in
(24.4 N-m)
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Active Damping™ benefits:
– Damping ratios of up to 0.5
– Higher acceleration than conventional step systems
– Decrease motor vibration
– Increase shaft power
– Higher performance
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Electronic Viscosity™ benefits:
– Reduce settling time
– Increase slow speed smoothness (reduce velocity ripple)
– Reduce audible noise
Protection Circuit
- Motor short circuits (phase-to-phase and phase-to-ground)
- Overtemperature
- Undervoltage
- Power dump (dissipates excess energy caused by load
regeneration)
Physical
- A wide selection of motors is available for both 120 VAC
and 240 VAC operation
- Drive status indicators: power, step input, over temperature
and motor fault
- 120VAC (170VDC bus voltage) for ZETA4, ZETA4-240,
ZETA8, and ZETA12
- 240VAC (340VDC bus voltage) for ZETA4-240
- Removable connectors for easy installation
- Selectable damping for optimized performance
- Optional EMC drive kit and EMC Cable kit consisting of AC
mains filter and cabling to allow complete EMC or low noise
system compliance for ZETA4-240, ZETA8, and ZETA 12
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