Siemens SITRANS P Manual do Utilizador descarregar pdf (Página 65)

UMSITRPDS3-1 Installation

November 2010

4-13

- +

4-20 mA

Hazardous

Location

Non-Hazardous

Location

Model 353/354

Terminals

AIN1

See Note 4

Transmitter

Terminals

See Note 5

250

See Note 1

See Note 2

See Note 6

See Note 3

GND

Common Ground Bus

MG00350a

1. Minimum network resistance equals the sum of the barrier resistances and the current sense resistor. Minimum

value is 250 Ohms; maximum value is 1100 Ohms.

2. Connect the HART Communicator as shown in Figure 2-2 for hazardous and non-hazardous locations. The

HART Communicator is a non-polar device.

3. Supply and return barriers are shown. Interconnect all cable shields and ground only at the barriers.

4. Procidia (Model 353R or i|pac) terminal assignments are:

• 34 – Analog Input 1 +

• 35 – Analog Input 1 Common

• 33 – 24 Vdc

• 18 – Station Common

5. For access to transmitter field terminals, remove the enclosure cap.

6. Maximum cable length is as calculated using the formula in section 4.3.6.

FIGURE 4-8 Model 353/354 to Transmitter Connections (Analog Mode)

1 2 ... 60 61 62 63 64 65 66 67 68 69 70 ... 221 222

Sem comentários

Siemens SITRANS P Manual do Utilizador Página 65