Honeywell UDC 3300 manual Lower Display Prompt, Rset MIN Rset RPM MAN Rset PROPBD2 Gain

Lower Display

Prompt

RSET MIN

or

RSET RPM

MAN RSET

PROPBD2

or

GAIN 2

Upper Display

Range of Setting

or Selection

0.02 to 50.00

–100 to +100 (in % output)

0.1to 9999 %

or

0.001 to 1000

Parameter

Definition

RSET MIN = Reset in Minutes per Repeat

RSET RPM = Reset in Repeats per Minute

RESET (Integral Time) adjusts the controller’s output in accordance with both the size of the deviation (SP–PV) and the time it lasts. The amount of the corrective action depends on the value of Gain. The Reset adjustment is measured as how many times proportional action is repeated per minute or how many minutes before one repeat of the proportional action occurs.

Used with control algorithm PID-A or PID-B.

Also defined as "HEAT" Reset on Duplex models for variations of Heat/Cool applications.

The selection of minutes per repeat or repeats per minute is made in the CONTROL parameters group under prompt MINorRPM.

MANUAL RESET is only applicable if you use control algorithm PD WITH MANUAL RESET in the Algorithm Set Up group. Because a proportional controller will not necessarily line out at setpoint, there will be a deviation (offset) from setpoint. This eliminates the offset and lets the PV line out at setpoint.

Bias appears on the lower display.

PROPORTIONAL BAND 2 or GAIN 2, RATE 2, and RESET 2 parameters are the same as previously described for “Heat” except that they refer to the cool zone tuning constants on duplex models or the second set of PID constants, whichever is pertinent.

RATE2MIN

RSET2MIN

RSET2RPM

CYC SEC

or

CYC SX3

CYC2 SEC

or

CYC2 SX3

0.00to 10.00 minutes

0.08or less = OFF

0.02 to 50.00

1 to 120

ATTENTION If 1/3 second increments are used, value of 120 = .33 seconds x 120 = 40 seconds maximum.

1 to 120

ATTENTION If 1/3 second increments are used, value of 120 = .33 seconds x 120 = 40 seconds maximum.

ATTENTION

Set 2 Tuning Parameters are not available when the Accutune selection for Loop 1 is SP+PV.

CYCLE TIME (HEAT) determines the length of one time proportional output relay cycle. Defined as "HEAT" cycle time for Heat/Cool applications.

CYC SEC— Electromechanical relays

CYC SX3— Solid state relays

Cycle times are in either second or 1/3-second increments depending upon the configuration of RLY TYPE in the Output Algorithm Set Up group.

CYCLE TIME 2 (COOL) is the same as above except it applies to Duplex models as the cycle time in the "COOL" zone of Heat/Cool applications or for the second set of PID constants.

CYC2 SEC— Electromechanical relays

CYC2 SX3— Solid state relays

Cycle times are in either second or 1/3-second increments depending upon the configuration of RLY TYPE in the Output Algorithm Set Up group.

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