ABB TB82PH Instrukcje Operacyjne Pobierz pdf (Strona 32)

I-E67-TB82FF-2A February 13, 2002

The Analog Input Function Block can be mapped to one out of the five outputs channels from the Transducer Block

and makes this information available to other function blocks on the fieldbus network. The CHANNEL parameter

selects the input from the Transducer Block. Available channels include the primary process variable (Conductivity

when the PRIMARY_VALUE_TYPE is set to Conductivity or Concentration when the PRIMARY_VALUE_TYPE is set

to Concentration), temperature, and secondary process variable (Concentration when the PRIMARY_VALUE_TYPE

is set to Conductivity or Conductivity when the PRIMARY_VALUE_TYPE is set to Concentration).

The following diagram illustrates the Analog Input Function Block design. The following table lists the Analog Input

Function Block parameter information.

Transducer

Block

Sensor

AI Block

Channel Value

CHANNEL

Fieldbus

Acyclic

Channel Value

(Conductivity or

Concentration)

Channel Value

SV1

(Temperature)

Channel Value

SV2

(Conductivity or

Concentration)

Block

Parameterization

TAG_DESC

STRATEGY

ALERT_KEY

GRANT_DENY

IO_OPTS

STATUS_OPTS

Simulation Enabled

SIMULATE

Percent Range Value

XD_SCALE

FIELD_VAL (%)

Linearization Type

L_TYPE

Output Scaling

OUT_SCALE

Indirect

Square Root Scaling

LOW_CUT

Direct Square Root

Damping

PV_FTIME

Direct

Block Mode

MODE_BLK

PV (Conductivity

or Concentration)

Alarm

Parameterization

UPDATE_EVT

BLOCK_ALM

ALARM_SUM

ACK_OPTION

ALARM_HYS

HI_HI_PRI

HI_HI_LIM

HI_PRI

HI_LIM

LO_PRI

LO_LIM

LO_LO_PRI

LO_LO_LIM

HI_HI_ALM

HI_ALM

LO_ALM

LO_LO_ALM

Alarm Detection

Acyclic

OUT

Cyclic Cyclic

Cyclic

Figure 32 – Analog Input Function Block Design Diagram

1 2 ... 27 28 29 30 31 32 33 34 35 36 37 ... 59 60

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