Honeywell DR4500A Product Manual page 108

Configuration Parameter Definitions
Control Parameters Set Up Group
Lower Display
Prompt Range of Setting or Selection
SP LOLIM
-999.0 to 9999.
inputs units
ACTION
DIRECT
REVRSE
–5.0 to 105.0% of output
OUTHILIM
–5.0 to 105.0% of output
OUTLOLIM
–5 to 105.0% of output
DROPOFF
DEADBAND
–5.0 to 25.0%
0 to 25.0%
0.5 to 5.0%
OUT HYST 0.0 to 5.0% of PV span
FAILSAFE
0 to 100%
*The Local Setpoint will automatically adjust itself to be within the setpoint limit range. For example, if SP
= 1500 and the SP HILIM is changed to 1200, the new Local Setpoint will be 1200.
94 DR4500A Classic Series Circular Chart Recorder With or Without Control Product Manual
Upper Display Parameter Definition
SETPOINT LOW LIMIT* — this selection prevents the
local and remote setpoints from going below the value
selected here. The setting must be equal to or greater
than the lower range of input 1 and input 2. Input 2,
when configured for remote setpoint, will be restricted to
this lower limit.
CONTROL OUTPUT DIRECTION — in what direction
do you want the recorder output to go when the process
variable increases.
DIRECT ACTING CONTROL — the recorder's output
increases as the process variable increases.
REVERSE ACTING CONTROL — the recorder's output
decreases as the process variable increases.
HIGH OUTPUT LIMIT — this is the highest value of
output beyond which you do not want the recorder
automatic output to exceed. Use 0 to 100% for time
proportional output type.
LOW OUTPUT LIMIT — this is the lowest value of
output below which you do not want the recorder
automatic output to exceed. Use 0 to 100% for time
proportional output type.
CONTROLLER DROPOFF VALUE — select an output
value that below which the recorder output will dropoff to
the low output limit value set in prompt "OUT LOLIM."
DEADBAND is an adjustable gap between the
operating ranges of output 1 and output 2 in which
neither output operates (positive value) or both outputs
operate (negative value). It is the difference between the
nominal trip points of relay 1 and relay 2.
Time Duplex
On-Off Duplex
Position Proportional
HYSTERESIS (OUTPUT RELAY ONLY) is an
adjustable overlap of the ON/OFF states of each control
output. This is the difference between the value of the
process variable at which the control outputs energize
and the value at which they de-energize. Only
applicable for ON-OFF control.
FAILSAFE OUTPUT VALUE — the output level used
when you have communications SHED or when NO
BURNOUT is configured and input 1 fails.
Release M
April 2017