Micromod Micro-DCI: 53SL6000 Single Loop Controller Bedienungsanleitung PDF herunterladen (Seite 97)

8.5.4 DO2 - Secondary PV Low

Alarm Contact Out

D02 is closed (on) when the secondary process

variable value is not within the loop 1 process

alarm limit 2 (PL2) setting.

Applicable parameter that may require configura-

tion change:

Section 5.6, ProG-do-inV2.

8.5.5 DI1 - Force Control Output

Contact Input

This is a closed contact or low active signal (0-1 V

dc). When a closed contact or 0-1 V dc signal is

present on this input, the control output value is

applied to the value of Ai7 (the control scheme D

input accepts the force control value and cS.d is

defaulted to select Ai7).

Applicable parameters that may require configura-

tion changes:

To enter a Force Output value in register Ai7:

Section 5.2, ProG-Ai-Ai.7 or oPEr-Ai7.

8.5.6 DI2 - Cascade Enable Contact

Input

When a low signal (0-1 V dc) is present on this

input and R (Remote) is selected with the R/L push

button, it enables cascade operation. The R LED

flashes if the R/L push button is pressed and this

signal is not low to enable cascade control.

Applicable parameter that may require configura-

tion change:

None.

8.5.7 Primary Output (the Setpoint

into the Secondary Loop)

The output of the primary loop is internally fed into

the secondary loop as the setpoint for that loop;

therefore, there is no signal connector designator.

Applicable parameters that may require configura-

tion changes:

Section 7.7, conF-cn.2-(oh, oL, hML, oSr, rSW,

rSV).

For control related prompts:

Section 7.7, conF-cn.2-(ir, iLr, Mr).

Sections 7.7, 9.2, 9.3, and 9.4, conF-cn.2-(Pb, tr,

td).

8.5.8 AO1 - Control Output

This is the 4-20 mA signal that drives the final

control element.

Applicable parameters that may require configura-

tion changes:

Section 7.7, conF-cn.1-(oh, oL, hML, oSr, rSW,

rSV).

For control related prompts:

Section 7.7, conF-cn.1-(ir, iLr, Mr).

Sections 7.7, 9.2, 9.3, and 9.4, conF-cn.1-(Pb, tr,

td).

8.5.9 SchM Selection

Cascade control is implemented with the controller

default settings and cASc (cascade control) se-

lected from the SchM prompt of the cS module.

Applicable parameter that may require configura-

tion changes:

Section 7.6, ProG-cS-SchM.

53SL6000 Instruction Manual Section 8. Eight Control Strategies

8-10

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