Terminals and wiring, Reliability – Rockwell Automation 1606-XLSBUFFER48 Power Supply Reference Manual User Manual

Page 8

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All parameters are specified at 24V, 20A, 25°C ambient and after a 5 minutes run-in time, unless noted otherwise.

8

Rockwell Automation Publication 1606-RM027A-EN-P — April 2014

Bulletin 1606 Switched Mode Power Supplies

12. Terminals and Wiring

Power terminal

Type

Bi-stable, quick-connect spring clamp terminals. IP20 Finger-safe construction.
Suitable for field- and factory installation. Shipped in open position.

Solid wire

0.5-6mm

2

Stranded wire

0.5-4mm

2

AWG 20-10AWG

Ferrules

Allowed, but not required

Pull-out force

10AWG:80N, 12AWG:60N, 14AWG:50N, 16AWG:40N (according to UL486E)

Wire stripping length

10mm / 0.4inch

Fig. 12-1 Connecting a wire

Instructions:
a)

Use appropriate copper cables designed
for an operating temperature of 60°C.

b)

Follow national installation codes and regulations.

c)

Ensure that all strands of a stranded wire are fully
inserted in the terminal connection.

d)

Up to two stranded wires with the same cross-
section are permitted in one connection point.


1.

Insert the wire 2. Snap the lever

To disconnect wire : reverse above procedure.

Signal terminal

Type

Plug connector with screw terminal mechanism.
Finger-touch-proof terminal with captive screws for 3.5mm slotted screwdriver.

Solid / stranded wire

0.2-2.5mm

2

AWG 22-14AWG

Ferrules

up to 1.5 mm

2

wire gauge

Wire stripping length

6mm / 0.24inch

Tightening torque

0.4Nm, 3.5lb.in

13. Reliability

Lifetime expectancy

min.

41 000h

40°C, stand-by mode

min.

116 000h

25°C, stand-by mode

MTBF SN 29500, IEC 61709

2 348 000h

40°C, stand-by mode

4 231 000h

25°C, stand-by mode

MTBF MIL HDBK 217F

405 000h

40°C, stand-by mode, ground benign GB40

636 000h

25°C, stand-by mode, ground benign GB25

The Lifetime expectancy shown in the table 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.
Lifetime expectancy is calculated according to the capacitor’s manufacturer specification.

MTBF

means Mean Time Between Failures, which is calculated according to statistics of device failures, and

indicates reliability of a device. It is the statistical representation of the likelihood of failure of a given device, and
does not necessarily represent the life of a product.

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