Emerson Bristol ControlWave Express, Instruction Manual

Page: 47 / 88

ControlWave Express Instruction Manual (CI-ControlWave Express)
Revised Mar-2011 I/O Configuration and Wiring 3-9
3.3.4 Non-Isolated Analog Output (AO) on TB7 of Process I/O
Board
Process I/O Board terminal block connector TB7 provides interface to a
single analog output (AO).
Table 3-6. Non-Isolated AO General Characteristics
Type Number
Supported
Characteristics
Analog Output
(AO)
1 (on TB7)
 Supports either 4-20mA or 1-5V
operation. Selection using jumper JP1
and switch SW1-4.
 Jumper JP3 determines whether AO
field power comes from system power
(nominally 12 or 24V from bulk input
supply applied to TB1-3 and TB1-4 on
the CPU/System Controller Board) or
from an external 24V power source
(+11 to +30Vdc connected to TB7-3
and TB7-4) such as the ControlWave
Loop Power Supply.
 Maximum external load you can
connect to a 4-20mA output is 250
ohms for an external 11V power
source or 650 ohms for an external
24V power source.
 Maximum external load current for the
1-5V output is 5 mA (with an external
11 to 30 V power source.)
 Self calibrating.
Setting Jumpers
See
Section 3.2.1
for details on setting jumpers.
Wiring
See
Figure 3-2
for wiring diagrams. If using the ControlWave Loop
Power Supply, see document
PIP-ControlWave-LS
.
Note: If your ControlWave Express uses 6V bulk power, you
must provide external power for the AO.
Software Configuration
To use data from this AO you must include a
CWM_EIO
board in
your ControlWave project using ControlWave Designer’s I/O
Configurator, and then configure it. See the
ControlWave Designer
Programmer's Handbook
(D5125) for more information. That same
manual includes an
I/O Mapping
section that describes, for advanced
users, the I/O map for this board.