Micromod Micro-DCI: 53SL6000 Single Loop Controller Bedienungsanleitung PDF herunterladen (Seite 37)

Table 3-3. oPEr Menu Selections

Prompt Description Dft

Adb

Alarm Deadband

Specifies the hystersis (gap)

between alarm trigger and reset.

This value is used to eliminate

repetitive alarm triggering when

the process is fluctuating about a

process limit. This value should be

set slightly larger then the peak-to-

peak fluctuations (noise) which are

normally present in the process

variable signal. (It is enabled with

conF-oPr-ALM.E.)

2.000

Proportional Band (see Section 8.2)

Specifies the percent of process

deviation from setpoint over the

control range (conF-cn.1[cn.2]-ir)

required to generate a full scale

output signal. For a detailed

discussion on control and tuning,

see Section 9. Values should be

limited between 2 to 1000%. (It is

enabled with conF-oPr-Pid.E.)

100.0

Reset Time (see Section 8.3)

Specifies the time in minutes

required for additional corrective

response (integral action). For a

detailed discussion on control and

tuning, see Section 9. Values

should be limited between 0.02

and 200 minutes /repeat. A value

of 0.0 turns integral action off.

(It is enabled with conF-oPr-Pid.E.)

0.0

Derivative Time (see Section 8.4)

Specifies the time in minutes that

control response is advanced over

proportional only action. For a

detailed discussion on control and

tuning, see Section 9. Values

should be limited between 0.01 to 8

minutes. A value of 0.0 turns

derivative action off. (It is enabled

with conF-oPr-Pid.E.)

0.0

Manual reset

This value determines the position

of the output element (e.g., valve)

when the controller is in automatic

mode and the error is zero. It is only

in effect when tr is zero. (It is

enabled with conF-oPr-Pid.E.)

50.0

Output High Limit

Specifies in percent the maximum

allowable control output during

automatic operation. This limit also

affects outputs during manual

operations when conF-cn.1(cn.2)-

hML is turned on. (It is enabled with

conF-oPr-hLc.E.)

0.0

Table 3-3. oPEr Menu Selections

Prompt Description Dft

Output Low Limit

Specifies in percent the minimum

allowable control output during

automatic operation. This limit also

affects outputs during manual

operations when conF-cn.1(cn.2)-

hML is turned on. (It is enabled with

conF-oPr-hLc.E.)

0.0

Control Zone

Specifies in engineering units an

area around the setpoint where

the process variable is considered

to be at setpoint (no error). When

the process variable is within this

area, the control output is held

steady at the integrator value as

determined by tr and Mr. Control

Zone is used to reduce valve wear

where process dynamics cause

output oscillations (hunting) when

the process is near its setpoint. (It is

enabled with conF-oPr-hLc.E.)

0.0

EZ?

Execute Easy-Tune

Causes Easy-Tune to start

execution. During execution, the

Easy-Tune LED flashes and tunE

appears in the green dro. Upon

successful completion, the Easy-

Tune LED stops flashing and the

green dro no longer displays the

tunE mnemonic. If an error or

warning condition occurs during

execution, the Easy-Tune LED

changes to a steady-state-on

condition and a mnemonic is

displayed in the green dro that

identifies the error or warning.

Pressing the mode/select push

button clears the display. After

taking the appropriate corrective

action(s), Easy-Tune can be

restarted by selecting YeS at the

run? prompt in the EZ menu. (It is

enabled with conF-oPr-EZ.E.)

EPb

Easy-Tune Proportional Band

Resultant %PB value calculated by

Easy-Tune. (It is enabled with

conF-oPr-EZ.E.)

0.0

53SL6000 Instruction Manual Section 3. Display Panel

3-10

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