Honeywell UDC 3300 manual OUTLoLIM Hi LIM Lo LIM, Dropoff, OUT Hyst Failmode Failsafe Swfail

Lower Display

Prompt

OUTLoLIM

I Hi LIM*

I Lo LIM*

DROPOFF*

Upper Display

Range of Setting

or Selection

–5.0 to 105 % of output

Within the range of the output limits

Within the range of the output limits

–5 to 105 % of output

Parameter

Definition

LOW OUTPUT LIMIT— This is the lowest value of output below which you do not want the controller automatic output to exceed.

Use 0 % to 100 % for digital output type.

Use –5 % to 105 % for current position output.

HIGH RESET LIMIT— This is the highest value of output beyond which you want no reset to occur.

LOW RESET LIMIT— This is the lowest value of output beyond which you want no reset to occur.

CONTROLLER DROPOFF VALUE— Output value below which the controller output will drop off to the low output limit value set in prompt OUTLoLIM.

DEADBAND

–5.0 to 25.0 % 0.0 to 25.0 % 0.5 to 5.0 %

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).

Time Duplex

On-Off Duplex

Position Proportional and Three Position Step

*Reset limits and Dropoff are not displayed when Three Position Step Control is configured.

OUT HYST

FAILMODE

FAILSAFE

SW_FAIL

0.0 to 100.0 % of PV span

NO LAT

LATCH

0 to 100 %

0PCT

100PCT

0OCT

100PCT

HYSTERESIS (OUTPUT RELAY) 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 MODE

NON LATCHING— Controller stays in last mode that was being used (automatic or manual); output goes to failsafe value. (NOTE 1, NOTE 2)

LATCHING— Controller goes to manual mode; output goes to failsafe value. (NOTE 2)

FAILSAFE OUTPUT VALUE— The value used here will also be the output level when you have Communications SHED set to failsafe or when NO BURNOUT is configured and Input 1 fails.

Applies for all output types except 3 Position Step.

THREE POSITION STEP FAILSAFE OUTPUT

0 PCT— Motor goes to closed position. 100PCT— Motor goes to open position.

PDMR/Position Proportional motor position when slidewire fails.

0 PCT— Motor goes to closed position. 100PCT— Motor goes to open position.

Note: PWR OUT must be configured for FSAF.

122 UDC 3300 Process Controller Product Manual 4/00