Campbell CR800 Series, Operator'S Manual

Page: 61 / 598

Section 5. Overview
61
requiring nominal 12 Vdc.
SW12
terminals can source up to 900 mA.
See the table Current Source and Sink Limits
(p. 389).
•
Continuous Analog Output (CAO) — available by adding a peripheral
analog output device available from Campbell Scientific. Refer to
Analog-Output Modules — List
(p. 394)
for information on available
expansion modules.
5.1.1.3 Power Terminals
5.1.1.3.1 Power In Terminals
The POWER IN connector is the connection point for external power supply
components.
5.1.1.3.2 Power Out Terminals
Note Refer to
Switched-Voltage Output — Details
(p. 388)
for more
information about using the CR800 as a power supply for sensors and
peripheral devices.
The CR800 can be used as a power source for sensors and peripherals. The
following voltages are available:
•
12V terminals: unregulated nominal 12 Vdc. This supply closely tracks
the primary CR800 supply voltage, so it may rise above or drop below
the power requirement of the sensor or peripheral. Precautions should
be taken to prevent damage to sensors or peripherals from over- or
under-voltage conditions, and to minimize the error associated with the
measurement of underpowered sensors. See Power Supplies —
Overview
(p. 83).
•
5V terminals: regulated 5 Vdc at 300 mA. The 5 Vdc supply is
regulated to within a few millivolts of 5 Vdc so long as the main power
supply for the CR800 does not drop below <MinPwrSupplyVolts>.
5.1.1.4 Communication Ports — Overview
Related Topics:
•
Communication Ports — Overview
(p. 61)
•
Data Retrieval and Comms — Overview
(p. 76)
•
CPI Port and CDM Devices — Overview
(p. 63)
• PakBus — Overview
(p. 77)
•
RS-232 and TTL
(p. 384)