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Configuration Parameter Definitions
Control Parameters Set Up Group
Release M
DR4500A Classic Series Circular Chart Recorder With or Without Control Product Manual
93
April 2017
Lower Display
Prompt
Upper Display
Range of Setting or Selection
Parameter Definition
BIAS
–9999 to 9999
(engineering units)
BIAS
— used when input 2 operates as a remote
setpoint (prompt "REMOTE").
Bias, together with ratio, establishes the correct
relationship between the remote setpoint and the
input 2 signal applied according to the formula:
REMOTE SETPOINT = IN2 VALUE (RATIO) + BIAS
NOTE: IN2 VALUE = Actual (engineering units)
All values must be within configured setpoint high and
low limits.
Input 2 must be enabled.
SP TRACK
SETPOINT TRACKING
— the local setpoint can be
configured to track the remote setpoint as listed below:
NONE
NO TRACKING
— if local setpoint tracking is not
configured, the LSP will not be altered when transfer
from RSP to LSP is made.
RSP
LSP (LOCAL SETPOINT) TRACKS RSP (REMOTE
SETPOINT) IN AUTO
— if configured, when the
recorder transfers out of remote setpoint, the last
value of the remote setpoint (RSP) is inserted into the
local setpoint.
POWER UP
POWER UP CONTROLLER MODE RECALL
— this
selection determines which mode and setpoint the
recorder will use when the it restarts after a power loss.
Select one from below:
MANUAL
MANUAL, LSP
— at power-up, the recorder will use
manual
mode with the output value displayed.
A LSP
AUTOMATIC, LOCAL SETPOINT
— at power-up,
the recorder will return to the
automatic
mode and will
use the local setpoint for control.
A RSP
AUTOMATIC, REMOTE SETPOINT
— at power-up,
the recorder will return to the
automatic
mode and will
use the remote setpoint for control.
AM SP
LAST MODE, LAST SETPOINT
used before power
down.
AM LSP
LAST MODE, LAST LOCAL SETPOINT
on power
down.
SP HILIM
–999.0 to 9999.
input units
SETPOINT HIGH LIMIT*
— this selection prevents the
local and remote setpoints from going above the value
selected here. The setting must be equal to or less than
the upper range of input 1 and input 2. Input 2, when
configured for remote setpoint, will be restricted to this
upper limit.