Siemens Pacemaker UM344-2 Manual de usuario descargar pdf (Pagina 39)

UM344-2 INSTALLATION

September 1995

250

See

Note 2

MXC

See Note 4

See

Note 3

Notes:

1. The System Power Supply is shown separate from the host input device. In practice, it may be part

of the host input device. The host input device can be either a HART or non-HART signaling device,

a Primary Master or a Secondary Master.

2. Network resistance equals the sum of the barrier resistances and the current sense resistor.

Minimum value 250 Ohms; maximum value 1100 Ohms.

3. Connect the MXC (a Secondary Master) to the loop only in the non-hazardous location. The MXC

is a non-polar device.

4. Interconnect all cable shields and ground only at the power source.

5. For access to Model 344 terminals, remove shorter end cap.

6. Maximum loop cable length calculated by formula in Section 4.3.5.

System Power

Supply

Controller,

Recorder, or Other

1-5 Vdc Device;

See Note 1

See Note 5

Network

Junction

250

See

Note 2

Controller,

Recorder, or

Other 1-5 Vdc

Device; Note 1

MXC

Hazardous

Location

Non-Hazardous

Location

Supply and

Return Barriers

Shown Above

See Note 4

See

Note 3

See Note 5

See Note 6

System Power

Supply

See Note 6

Network for Hazardous Locations

Network for Non-Hazardous Locations

_ _

Signal Test

X02866S1

Model 344

Terminals

Model 344

Terminals

1 2 ... 34 35 36 37 38 39 40 41 42 43 44 ... 182 183

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Siemens Pacemaker UM344-2 Manual de usuario Pagina 39

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