United Security Products AVD-45c Manual descargar pdf (Pagina 87)

1/03 UDC 6300 Process Controller Product Manual 73

4.2 Tuning Parameters Set Up Group, Continued

Table 4-1 Tuning Group Prompt Definitions, continued

Lower Display

Prompt

Upper Display

Range of Setting

or Selection

Parameter

Definition

RSET MIN

RSET RPM

0.02 to 50.00

RSET MIN = RESET IN MINUTES / 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/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."

MAN RSET

–100 to +100

(in % output)

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.

PROP BD2

GAIN 2

0.1 to 999.9%

0.001 to 999.9

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

0.00 to 10.00 minutes

0.08 or less = OFF

ATTENTION

RSET2MIN

RSET2RPM

0.02 to 50.00 Set 2 Tuning Parameters are not available when

Adaptive Tune selection for Loop 1 is “SP+PV”.

GAIN VALn

Read Only

LOOP 2 GAIN - This is the value being provided by

Gain Scheduling.

CYCLE SEC

1 to 120 seconds

CYCLE TIME (HEAT) determines the length of one

time proportional output relay cycle. Defined as

"HEAT" cycle time for Heat/Cool applications.

CYC2 SEC

1 to 120 seconds

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

2nd set of PID constants.

Table 4-1 continued on next page

1 2 ... 82 83 84 85 86 87 88 89 90 91 92 ... 301 302

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United Security Products AVD-45c Manual Pagina 87

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