Remote Output Signal Control (Ddc); Remote Setpoint Control (Spc) - Fisher DPR900 User Manual

5-42
Configuration
IFISHER")
5.9.1
5.9.2
Function FCODE
Option No Default Selected
ValW? Value
Data 117 Disabled
0
0
Commu-
Not Used 1
nications Output signal control
2
Remote setpoint control 3
COMLI RS-485 protocol 4
When the user configures any of the other options (l-4) the red C light
comes on. Press the R button to activate or disable the data
communications function. The data communication mode is active
only when the R button is lit. Discrete output DO2 is activated as soon
as the controller is in the remote mode.
Remote Output Signal Control (DDC)
FCODE 117, Option 2 is remote output signal control. Two 24V
discrete input signals, Dl3 and Dl4, provide remote output signal
control provided the controller is in the Remote mode, the R button
LED is lit. Activation of Dl3 decreases and D14 increases the output
signal. If both signals are active no change occurs in the output
signal. Choose options from the following FCODE's.
Use FCODE 33 to set the maximum ON time of the discrete inputs, in
the range l-999 seconds. This is further defined as the time it takes to
move the output from 0 to 100% or 100 to 0%.
Function
Parameters FCODE Range Unit Increment Default Selected
Value Value
DDC Time for O-100%
33 l-999 s 1s 100s
Running change
Time
The DII or Dl2 discrete input signal lines can switch the controller
mode from remote to local (but not from local to remote). Configure
this capability by setting the appropriate value with FCODE 111.
Function FCODE
Option No Default Selected
Value Value
EXtWlal 111
Disabled
0 0
R/L Remote/Local switching via DIl 1
Switching
Remote/Local switching via Dl2 2
Remote Setpoint Control (SPC)
FCODE 117, Option 3, selects remote setpoint (supervisory) control.
Remote control of the setpoint is then possible via activation of
discrete inputs D13 and Dl4. A 24 V signal on D13 decreases the
setpoint value and a 24 V signal on D14 increase the setpoint value. If
both inputs are active simultaneously, the setpoint does not change.
lJM6.1:DPR900:9102
May 7997