Terminals and wiring, Reliability – Rockwell Automation 1606-XLE960MX-3N Power Supply Reference Manual User Manual
Page 10
All parameters are specified at 48V, 20A, 3x480Vac, 25°C ambient and after a 5 minutes run-in time, unless noted otherwise.
10
Rockwell Automation Publication 1606-RM025A-EN-P — April 2014
Bulletin 1606 Switched Mode Power Supplies
12. Terminals and Wiring
Use appropriate copper cables that are designed for a minimum operating temperatures of 60°C (for ambient up to
45°C) and 75°C (for ambient up to 60°C). Follow national installation codes and regulations! Ensure that all strands of
a stranded wire enter the terminal connection! Do not use the power supply without PE (Ground) connection! Up to
two stranded wires with the same cross section are permitted in one connection point (except PE wire). Ferrules are
allowed, but not required.
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Wire stripping length 7mm / 0.26inch 12mm / 0.5inch
Recommended tightening torque 0.8Nm / 7lb.inch 1.2Nm / 10.6lb.inch
13. Reliability
Lifetime expectancy min.
77 000h 40°C, 20A
A
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267 000h
25°C, 20A, Ground Benign GB25
The Lifetime expectancy shown in the table above indicates the operating hours (service life) and is determined by
the lifetime expectancy of the built-in electrolytic capacitors.
Lifetime expectancy is specified in operational hours and is calculated according to the capacitor’s manufacturer
specification. The prediction model allows a calc ulation of up to 15 years from date of shipment.
MTBF
stands for Mean Time Between Failures, which is calculated according to statistical device failures, and indicates
reliability of a device. It is the statistical representation of the likelihood of failure of a specific unit and does not necessarily
represent the life of a product.