Allen-Bradley 1606-XLB480E, Manual, Page: 13 / 26

Rockwell Automation Publication 1606-RM104A-EN-P - July 2020 13
Connection Terminals
The terminals are IP20 fingersafe constructed and suitable for field- and
factory wiring.
Lifetime Expectancy The lifetime expectancy that is shown in the table indicates the minimum
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 manufacturer specification of
the capacitor. The manufacturer of the electrolytic capacitors only states a
maximum life of up to 15 years (131,400 h). Any number exceeding this value is
a calculated theoretical lifetime which can be used to compare devices.
Mean Time Between Failure Mean time between failure (MTBF) is calculated according to statistical device
failures, and indicates reliability of a device. It is the statistical representation
of the likelihood of a unit to fail and does not necessarily represent the life of a
product.
The MTBF value is a statistical representation of the likelihood of a device to
fail. An MTBF value of for example 1,000,000 h means that statistically one
unit fails every 100 hours if 10,000 units are installed in the field. However, it
cannot be determined if the failed unit has been running for 50,000 h or only
for 100 h.
For these types of units, the mean time to failure (MTTF) value is the same
value as the MTBF value.
Attributes Input Output DC OK-Signal
Type Screw termination Screw termination Push-in termination
Solid wire
6 mm
2
max (0.0093 in
2
max) 6 mm
2
max (0.0093 in
2
max) 1.5 mm
2
max (0.0023 in
2
max)
Stranded wire
4 mm
2
max (0.0062 in
2
max) 4 mm
2
max (0.0062 in
2
max) 1.5 mm
2
max (0.0023 in
2
max)
American Wire Gauge AWG 20…10 AWG 20…10 AWG 24…16
Max wire diameter
(including ferrules)
2.8 mm (0.11 in.) 2.8 mm (0.11 in.) 1.6 mm (0.06 in.)
Recommended tightening
torque
1 N•m max (9 lb•in max) 1 N•m max (9 lb•in max) —
Wire stripping length 7 mm (0.28 in.) 7 mm (0.28 in.) 7 mm (0.28 in.)
Screwdriver
3.5 mm (0.14 in.) slotted or cross-
head No 2 3.5 mm (0.14 in.) slotted or cross-
head No 2 3 mm (0.12 in.) slotted to open the
spring
Lifetime Expectancies
Conditions
AC 100V AC 120V AC 230V
72,000 h 79,000 h 102,000 h At 24V, 20 A and 40 °C (104 °F)
167,000 h 171,000 h 197,000 h At 24V, 10 A and 40 °C (104 °F)
203,000 h 223,000 h 288,000 h At 24V, 20 A and 25 °C (77 °F)
472,000 h 485,000 h 557,000 h At 24V, 10 A and 25 °C (77 °F)
Type of MTBF
MTBF
Conditions
AC 100V AC 120V AC 230V
MTBF SN 29500, IEC 61709
595,000 h 611,000 h 704,000 h At 24V, 20 A and 40 °C (104 °F)
1,090,000 h 1,116,000 h 1,252,000 h At 24V, 20 A and 25 °C (77 °F)
MTBF MIL HDBK 217F
274,000 h 275,000 h 289,000 h At 24V, 20 A and 40 °C (104 °F), Ground Benign GB40
368,000 h 370,000 h 386,000 h At 24V, 20 A and 25 °C (77 °F), Ground Benign GB25
59,000 h 59,000 h 63,000 h At 24V, 20 A and 40 °C (104 °F), Ground Fixed GF40
76,000 h 76,000 h 80,000 h At 24V, 20 A and 25 °C (77 °F), Ground Fixed GF25