Emerson Process Management Bristol ControlWave ExpressPAC - Manual (Page 29)

ControlWave ExpressPAC Instruction Manual (CI-ControlWave EPAC)
Revised Mar-2011 Installation 2-15
If you connect solar panels to rechargeable battery systems to power the
ControlWave ExpressPAC, there is a secondary power input you can
use to provide power if there is no power from the solar panel/battery
system.
Caution
At this time you can connect power wiring. However; for safety reasons
and to prevent accidental damage to your bulk DC power supply, do not
connect the pluggable terminal block connectors TB1 and TB2 to the
CPU/System Controller board until after you install, wire, ground, and
configure the entire unit.
Follow the instructions in Section 2.3.3 General Wiring Guidelines when
wiring connections.
Power Supply
Current
Requirements
Depending upon the CPU type, the ControlWave ExpressPAC accepts
either a 6Vdc, 12Vdc or 24Vdc bulk power input. You can estimate the
maximum current required for your ControlWave ExpressPAC using
the following equation:
Bulk +6/12/24 Vdc Supply Current = CPU/System Controller Board (with
options) + Process I/O Board + LCD
display/keypad + optional external
modem/radio
Refer to Table 2-4 for ControlWave ExpressPAC power requirements
based on the CPU type.
Table 2-4. ControlWave ExpressPAC Bulk Power Requirements
CPU Type and Components
Bulk 6Vdc
Power
Supply
Bulk 12Vdc
Power Supply
Bulk 24Vdc
Power Supply
14 MHz Ultra Low Power CPU with LCD
display/keypad 7 mA without field supply
and with AO output
under range: 5 mA
Not Supported
33 MHz Low Power CPU without Ethernet, but
with LCD display/keypad Not
Supported
without process I/O
board: 14 mA
without process I/O
board: 14 mA
33 MHz CPU with Ethernet and LCD
display/keypad Not
Supported
without process I/O
board: 80 mA
without process I/O
board: 47 mA
Note: This summation accommodates steady state current draw and is
based on typical application loads. For 3808 power consumption,
see the 3808 manual (CI-3808). If your ControlWave
ExpressPAC includes a modem or radio, contact the
radio/modem manufacturer for power consumption
specifications.
Caution
If your ControlWave ExpressPAC is configured to use a solar panel to
charge a 7AH (6V or 12V) battery for power, NEVER CONNECT THE
SOLAR PANEL/CHARGER WITHOUT ALSO CONNECTING THE