Honeywell DR4300 Manuale Utente

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DR4300 Circular Chart Recorder 
118 
DR4300 Circular Chart Recorder Product Manual 
12/03 
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 
•  Alarm 1 is not available.  
Table 4-19  Limit Control Parameter Definitions 
Lower Display 
Prompt 
Upper Display  
Range of Setting  
or Selection 
Parameter  
Definition 
LIMIT 
 
HI         [factory setting] 
LO 
TYPE OF LIMIT CONTROL 
HI 
— Limit action occurs when PV exceeds SP. 
LO
 — Limit action occurs when PV is less than SP. 
POWRUP 
 
NORM 
RST         [factory setting] 
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.* 
SP HI 
–999 to 9999 
 
  [factory setting = 100] 
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. 
SP LO 
–999 to 9999 
 
  [factory setting = 0] 
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. 
XRSET 
 
 
 
 
DIS [factory setting] 
 
 
ENAB 
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).