Aerotech AGV-SPO Series, Hardware Manual

Page: 18 / 48

1.1. Environmental Specifications
WARNING : Use this product only in environments and operating conditions that are
approved in this manual.
Table 1-2: Environmental Specifications
Ambient
Temperature
The optimal operating temperature is 20° C ±2° C (68° F ±4° F). If at any time the
operating temperature deviates from 20° C degradation in performance could
occur.
Storage: 0° to 40° C (32° to 104° F) in original shipping packaging
Humidity
Operating: 20% to 60% RH
Storage: 10% to 70% RH, non-condensing in original packaging. The stage should
be packaged with desiccant if it is to be stored for an extended time.
Altitude
Operating: 0 m to 2,000 m (0 ft to 6,562 ft) above sea level
Contact Aerotech if your specific application involves use above 2,000 m or below
sea level.
Vibration
Use the system in a low vibration environment. Excessive floor or acoustical
vibration can affect system performance. Contact Aerotech for information
regarding your specific application.
Protection
Rating
The AGV-SPO has some protection from contamination due to laser marking and
cutting processes. However, the scan head is not sealed. Dust and fumes
generated by the laser machining process should be removed via an adequate
exhaust or vacuum system. Failure to control this debris could result in damage
to the scan head and the focal lens.
Use Indoor use only
1.2. Accuracy and Temperature Effects
Aerotech products are designed for and built in a 20°C (68°F) environment. Extreme temperature
changes could cause a decrease in performance or permanent damage to the AGV-SPO. At a
minimum, the environmental temperature must be controlled to within 0.25ºC per 24 hours to
ensure the AGV-SPO specifications are repeatable over an extended period of time. The severity of
temperature effects on all specifications depends on many different environmental conditions,
including how the AGV-SPO is mounted. Contact the factory for more details.
1.2.1. Power-On Thermal Drift
For the best possible accuracy and repeatability, it is recommended that the +5 V feedback power
supply be connected to the galvano motors for a minimum of four hours prior to performing any
critical operations with the AGV-SPO. Application of the feedback power supply can raise the
temperature of the galvano motors, resulting in a transient period of "power-on" thermal drift.
Allowance for this warm-up period provides the galvano motors sufficient time to achieve thermal
equilibrium.
In applications where a mark-and-measure calibration is performed to improve accuracy, it is
essential that the calibration procedure not be conducted prior to completion of the warm-up
period. Otherwise, the calibration may not be effective due to the change in zero offset that can
result from the "power-on" thermal drift.
To minimize delays in operating the AGV-SPO, it is recommended that the +5 V feedback power
supply is continuously maintained to the galvano motors, even when they are not under servo
control.
1.1. Environmental Specifications AGV-SPO Hardware Manual
18 www.aerotech.com