Siemens Pacemaker UM344-2 Manuel d'utilisateur télécharger pdf (Page 105)

UM344-2 CALIBRATION AND MAINTENANCE

September 1995

NOTE

Removing a transmitter can interrupt power to other transmitters

powered from a common power source. Note the effect this can have

on process control and operation and, if necessary, follow the proper

procedures to shut down the process.

When disconnecting the SIGNAL leads, carefully insulate each lead as it

is removed to prevent accidental electrical shorts.

2. Remove the enclosure cap for access to the terminal compartment

3. Connect MXC and DMM (milliammeter) to the loop as shown in either Figure 6-1 or 6-2. Set DMM

to measure 4-20 mA.

Field Calibration Wiring - Open jumper at Circuit Junction.

4. Place loop in Manual mode.

5. Apply power to the Loop.

6. Establish communication between MXC and transmitter. Refer to Section 3.2 as necessary.

If the transmitter is configured for digital mode, reconfigure for analog mode by setting the short

address to zero (0). Refer to Section 5.1.1.3 as necessary.

7. At the Main Menu, select the CAL/TEST program.

Step through the MXC screens and use the PREV and NEXT

buttons to select the DAC OUTPUT calibration. Press SELECT

(F4).

The MXC will display the adjacent screen:

8. Press ENTER (F4).

The MXC will display:

9. Read the ammeter. It should indicate: 4.000 ±0.0048 mA.

10. If output is within limits, press QUIT (F3) and proceed to step 13.

If calibration is required, perform steps 11 and 12.

11. Respond to the prompt. Key in the current indicated by the ammeter and press ENTER (F4).

PRESSING ENTER WILL

SET TRANSMITTER

OUTPUT TO A- EN-

4.00 MA BORT TER

ENTER OUTPUT CURRENT

EN-

< QUIT TER

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Siemens Pacemaker UM344-2 Manuel d'utilisateur Page 105