Chapter 2
Configuring and Setting Up the SC-2311
©
National Instruments Corporation
2-5
SC-2311 User Manual
Setting SW3 to the Board +5V (5B) position powers the 5B modules using
the E Series DAQ 5 V supply. In this mode, you can power the
5B Series modules directly from the E Series DAQ device.
Note
The maximum current that the DAQ device can deliver depends on which DAQ
device you have selected. When using the Board +5V (5B) setting, it is necessary to know
the current requirements of the 5B Series modules and the current available from the DAQ
device you are using. See Appendix C,
Power Requirements for the SC-2311 with 5B and
SSR Series Modules
, for more details.
Setting SW2
Setting SW2 to the EXT +5V (SSR) position powers the SSR modules
using the external power supply. In this mode, you must connect the
external power supply to power the SSR Series modules.
Setting SW2 to the Board +5V (SSR) position powers the SSR modules
using the E Series DAQ 5 V supply. In this mode, you can power
the SSR Series modules directly from the E Series DAQ device.
Note
The maximum current that the DAQ device can deliver depends on which DAQ
device you have selected. When using the Board +5V (SSR) setting, it is necessary to know
the current requirements of the SSR Series modules and the current available from the
DAQ device you are using.
Safety Information
Cautions
Do
not
operate the device in an explosive atmosphere or where there may be
flammable gases or fumes.
Keep away from live circuits. Do
not
remove equipment covers or shields unless you are
trained to do so. If signal wires are connected to the device, hazardous voltages can exist
even when the equipment is turned off. To avoid a shock hazard, do
not
perform procedures
involving cover or shield removal unless you are qualified to do so and disconnect all field
power prior to removing covers or shields.
Equipment described in this document must be used in an Installation Category II
1
environment per IEC 60664-1.
Do
not
operate damaged equipment. The safety protection features built into this device
1
Category II refers to local-level power distribution, such as that provided by a standard wall outlet.
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