Table of Contents
Advertisement
5-10
Configuration
(FISHER"]
5.5
Output
Signal Assignments
5.5.1
5.51 .l
One application
of external
auto/manual
switching
is cascade
control.
Two controllers
may be connected
as shown in the figure.
Controller
2 is the primary
controller,
Controller
1 handles
switching
and manual
control
through
DO1 connected
to the primary
controller.
The primary
controller's
output signal
is prevented
from
going to an end point during
manual
control.
The type of connection
shown in the figure,
keeps the controllers
electrically
isolated.
The DPRSOO
is capable
of providing
two analog
and six discrete
outputs
for communication
with external
devices.
Analog
Output (AO)
The controller
can send output signals
to the process
over either of
two analog
output channels
(A01 and A02)
or over one or two
discrete
output channels
(DO5 and D06). The output signal from the
PID algorithm
may be one of three types selected
by using FCODE
102.
1 Function
1 FCODE
1
Option
No
Default
I
VaILI
lEEed I
I
I
I
I
I
l( 12
Analog
output
1
1
Positioning
motor output (DO5
Con-
troller
Signal
and DOEa-
2
Pulse-width
modulated
output
I
(DO51
3
Analog
Output
(Option
1)
Choose
analog
outputs to provide
signals
to the process
in the 4-20
mA or O-20 mA range. Set the signal range using FCODE
123 (AOl)
and 124 (A02).
Function
F
Signal
Range
A01
A02
123
17
124
Option
No
Default
Selected
WW
VZllW
4620mA
output signal
1
1
D-20mA
output signal
2
4-20mA
output signal
1
D-20mA
output signal
2
2
To configure
output signal
limits,
use FCODE
105.
UM6.1:DPR900:9102
May 1991
Hide quick links:
Advertisement
Table of Contents
