Allen-Bradley 1606-XLS960BUFFER, Справочное руководство, Страница: 12 / 24

12 Rockwell Automation Publication 1606-RM105A-EN-P - July 2020
Inhibit Input
Buffering can be disabled or interrupted with the Inhibit input (pin 9). To use
the Inhibit input, connect pin 6 to either the positive pole of the terminal
voltage or to the external control voltage, and connect pin 9 to the
corresponding negative pole.
Inhibiting the unit also discharges the internal capacitors. Charging of the
capacitor is not possible when the buffer module is in Inhibit mode.
For the wiring scheme, see Figure 9 on page 11 , Figure 20 on page 21 , and
Figure 21 on page 21 .
Efficiency and Power
Losses
Lifetime Expectancy and
Mean Time Between Failure
Attributes Values and Notes
Signal voltage Max 35V DC (between pin 6 and pin 9)
Signal current Max 4 mA, current limited
Inhibit mode —
The unit does not buffer (or stops buffering) if the
voltage between pin 6 and pin 9 is higher than 10V.
Below 6V buffering functions again.
Isolation voltage See Dielectric Strength on page 17 .
Attributes Values Notes
Efficiency Typ >99% Power supply mode, 40 A output current, capacitors fully charged
Power losses Typ 1.9 W Power supply mode, 0 A output current, capacitors fully charged
Attributes Values Notes
Calculated lifetime expectancy
(1)
(1) The calculated lifetime expectancy that is shown in the table indicates the minimum operating hours (service life). This
lifetime expectancy 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 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.
189 000 h Stand-by mode, 40 °C (104 °F)
536 000 h Stand-by mode, 25 °C (77 °F)
MTBF
(2)
SN 29500, IEC 61709
(2) 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. An
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.
2 114 000 h Stand-by mode, 40 °C (104 °F)
3 937 000 h Stand-by mode, 25 °C (77 °F)
MTBF
(2)
MIL HDBK 217F
272 000 h Stand-by mode, 40 °C (104 °F), Ground Benign GB40
433 000 h Stand-by mode, 25 °C (77 °F), Ground Benign GB25
95 000 h Stand-by mode, 40 °C (104 °F), Ground Fixed GF40
143 000 h Stand-by mode, 25 °C (77 °F), Ground Fixed GF25