Rosemount 848T Multisensor Transmitter Temperature Inputs Owner's manual

Brand: Rosemount

Model: 848T Multisensor Transmitter Temperature Inputs

Type: Owner's manual

Manual Supplement

00809-0400-4697, Rev AA

April 2003

INSTALLING THE MODEL 848T WITH AN ANALOG

CONNECTOR

The analog connector converts the 4–20 mA signal to a 20–100 mV signal. The

Model 848T transmitter uses a standard mV sensor type to output the scaled 4–20

mA signal onto the F

OUNDATION fieldbus.

Use the following steps when installing the Model 848T with the analog connector:

1. The Model 848T, when ordered with option code S002, comes with four

analog connectors. Replace the standard connector with the analog

connector on the desired channels.

2. Wire one or two analog transmitters to the analog connector according to

Figure 1-1. There is space available on the analog connector label for

identification of the analog inputs.

NOTE

Power supply should be rated to support the connected transmitter(s).

3. If the analog transmitters can communicate using the HART protocol, the

analog connectors are supplied with the ability to switch in a 250 ohm resistor

for HART communication (see Figure 1-2).

One switch is supplied for each input (top switch for “A” inputs and bottom

switch for “B” inputs). Setting the switch in the “ON” position (to the right)

bypasses the 250 ohm resistor. Terminals are provided for each analog input

to connect a HART communicator for local configuration.

Interfacing Analog Transmitters to

OUNDATION

™

Fieldbus

0400-4697_RevAA.fm Page 1 Tuesday, April 1, 2003 10:02 AM

Manual Supplement

00809-0400-4697, Rev AA

April 2003

Model 848T

S-2

Figure 1-1. Model 848T Analog Input Wiring Diagram

MODEL 848TNA5S001T1

SERIAL NO. 555999

FACTORY CAL. 0 to 100 DEG. C

FOUNDATION TYPE 11X BUS-POWERED

TT-101

CHANHASSEN, MN. USA

Power

Analog Input

Analog Transmitters

0400-4697_RevAA.fm Page 2 Tuesday, April 1, 2003 10:02 AM

Manual Supplement

00809-0400-4697, Rev AA

April 2003

Model 848T

S-3

Figure 1-2. Model 848T Analog Connector

HART

Channel A

250 ohm resistor in the loop when switched to the left

Space available for

identification of inputs

HART

Channel B

0400-4697_RevAA.fm Page 3 Tuesday, April 1, 2003 10:02 AM

Manual Supplement

00809-0400-4697, Rev AA

April 2003

Model 848T

S-4

CONFIGURING THE MODEL 848T WITH THE ANALOG

CONNECTOR

Sensor Transducer Block Configuration

Use the sensor configuration method to set the sensor type to mV – 2-wire for the

applicable transducer block or follow these steps.

1. Set the MODE_BLK.TARGET to out of service (OOS).

2. Set the SENSOR_TYPE to mV.

3. Set the MODE_BLK.TARGET to AUTO.

Analog Input Block Configuration

Follow these steps to configure the applicable Analog Input Block:

1. Set the MODE_BLK.TARGET to OOS.

2. Set CHANNEL to the transducer block configured for the analog input.

3. Set XD_SCALE.EU_0 to 20

Set XD_SCALE.EU_100 to 100

Set XD_SCALE.ENGUNITS to mV

4. SET OUT_SCALE to match the desired scale and units for the connected

analog transmitter.

Flow Example: 0 – 200 gpm

OUT_SCALE.EU_0 = 0

OUT_SCALE.EU_100 = 200

OUT_SCALE.ENGUNITS = gpm

5. Set L_TYPE to INDIRECT.

6. Set the MODE_BLK.TARGET to AUTO.

0400-4697_RevAA.fm Page 4 Tuesday, April 1, 2003 10:02 AM

Rosemount 848T Multisensor Transmitter Temperature Inputs Owner's manual

Rosemount 848T Multisensor Transmitter Temperature Inputs Owner's manual

Rosemount 848T Multisensor Transmitter Temperature Inputs Owner's manual

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