Response Electronics CL6011B Especificaciones descargar pdf (Pagina 102)

4Ć20 DCP Configuration

Original Ć June 1990CE4.2:CL6211

at which the notch gain becomes effective. When the current Process

Variable of the loop is between the lower and upper notch break points,

the loop proportional gain is multiplied by the notch ratio value. The

upper notch break point is expressed in engineering units and must be

between -36.0 and 136.0 percent of the engineering unit span. The limit

may be changed by tuning DDP #34, NTC HIBP.

4.3.4 Station Parameters

Alarm A Ċ Alarm A is the deviation alarm for the Direct Control point.

The deviation limit, which defines how far the process variable must vary

from the set point before Alarm A is set, must be configured. The alarm

word that will be displayed at the console when the alarm is set must

also be defined (may be up to eight characters in length). The value

range for the deviation limit is 0 to 136.0 percent of engineering unit

span. The deviation limit may be changed using DDP #11, ALM A TR.

Alarm B Ċ Alarm B is one of two absolute alarms for the Direct Control

point (see Alarm C). The alarm must be configured as either a high or

low alarm. The trip point, which defines when the alarm is set, and the

alarm word (up to eight characters in length) that will be displayed at the

console must also be defined. The value range for the trip point is -16.0

to 136.0 percent of engineering unit span. The trip point may be

changed using DDP #12, ALM B TR.

Alarm C Ċ Alarm C is one of two absolute alarms for the Direct Control

point (see Alarm B). The alarm must be configured as either a high or

low alarm. The trip point, which defines when the alarm is set, and the

alarm word (up to eight characters in length) that will be displayed at the

console must also be defined. The value range for the trip point is -16.0

to 136.0 percent of engineering unit span. The trip point may be

changed using DDP #13, ALM C TR.

Alarm D Ċ Alarm D is a user defined alarm. This alarm can only be

set/reset by the Function Sequence Table (FST). The alarm word (up to

eight characters in length) that will be displayed at the console must be

defined.

Alarm Deadband Ċ The deadband is the amount by which the PV must

move away from a trip point, or by which the deviation limit must move

towards a set point, before the alarm is cleared. The valid range is 0 to

136.0 percent of engineering units span. The deadband may be

changed using DDP #14, ALM DBND.

1 2 ... 97 98 99 100 101 102 103 104 105 106 107 ... 319 320

Sin comentarios

Response Electronics CL6011B Especificaciones Pagina 102