Limit Control Configuration; Table 4-19 Limit Control Parameter Definitions - Honeywell DR4300 Product Manual

DR4300 Circular Chart Recorder

4.3.22 Limit Control Configuration

Special configuration for control and alarms
The DR4300 is available as a limit controller. Most set up groups described in Subsections 4.3.7 through
4.3.20 apply to limit control, and are configured for the limit controller the same way they are for other
recorders.
The exceptions are:
• Control set up group contains special parameters for limit control in place of those described in
Subsection 4.3.11. The limit control set up parameters that replace those in Subsection 4.3.11 are
listed in Table 4-19.
• Alarm 1 is not available.
Lower Display
Prompt
LIMIT
POWRUP
SP HI
SP LO
XRSET
118

Table 4-19 Limit Control Parameter Definitions

Upper Display
Range of Setting
or Selection
HI [factory setting]
LO
NORM
RST [factory setting]
–999 to 9999
[factory setting = 100]
–999 to 9999
[factory setting = 0]
DIS [factory setting]
ENAB
DR4300 Circular Chart Recorder Product Manual
Parameter
Definition
TYPE OF LIMIT CONTROL
HI — Limit action occurs when PV exceeds SP.
LO — Limit action occurs when PV is less than SP.
POWER UP STATE
NORM — Normal limit control on power up.
RST — Powers up in limit state. Recorder will not begin
normal limit control until RESET key is pressed.*
SETPOINT HIGH RANGE LIMIT —This parameter
prevents the local setpoint from going above the value
specified here. The setting must be equal to or less than
the upper range of the input.
SETPOINT LOW RANGE LIMIT—This parameter
prevents the local setpoint from going below the value
specified here. The setting must be equal to or greater
than the lower range of the input.
EXTERNAL RESET—Use this parameter to enable or
disable resetting the limit controller (taking it out of the
limit state) using Remote Switch 1 (digital
input 1).
DIS — When external reset is disabled, the limit
controller can be reset only by pressing the
MAN/AUTO/RESET key on the recorder.
ENAB — When external reset is enabled, the limit
controller can be reset two ways: by pressing the
MAN/AUTO/RESET key on the recorder, or by turning on
digital input 1 (contact closed).
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