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Drives Service & Support > 1394 > Specifications
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| Environmental Specifications | Mount the 1394 in an enclosure that is clean and dry (IP55 protection rating minimum (IEC publication 529)). For enclosures ventilated with ambient air, be sure to have appropriate filtering to protect against contamination. Keep the ambient air temperature between 0° and 50° C (32° and 122° F) and the humidity between 5% and 95%, non-condensing.The 1394 can operate at elevations to 1000 meters (3300 ft) without derating. However, the continuous current rating must be derated by 3% for each additional 300 m (1000 ft) up to 3000 m (10,000 ft). Consult with your local Allen-Bradley Sales Representative prior to operating at over 3000 m (10,000 ft). |
| Power Dissipation | The power dissipation characteristics of the 1394 System and Axis Modules are provided on the following page (use for both 460V and 380V input).Important: Use the power dissipation figures in the table below to calculate cumulative system heat dissipation to ensure that the ambient temperature inside the enclosure does not exceed 50° C (122° F). To calculate total power dissipation, add the dissipation of the system module to the dissipation of the axis module(s). |
| System Modules | ||
At a rated power output of: |
The power dissipation for the 1394-SJT05-x is: |
The power dissipation for the 1394-SJT10-x is: |
20% |
66 |
70 |
40% |
70 |
77 |
60% |
73 |
84 |
80% |
77 |
81 |
100% |
80 |
98 |
Shunt Resistor |
When the system module's internal shunt resistor is active, some additional power will be dissipated at the system module. The shunt resistor's maximum dissipation is 200W. Many applications will use less than 10% of this capacity. |
