Siemens Pacemaker UM344-2 Manual de usuario descargar pdf (Pagina 124)

CALIBRATION AND MAINTENANCE UM344-2

September 1995

TABLE 6.4 Message - Field Device Malfunction

This message results when, after having successfully established communications with a transmitter, a

transmitter self-diagnostics failsafe flag is detected in a received message. Use the MXC STATUS

program to identify the error source.

POSSIBLE CAUSE CORRECTIVE ACTION

Transmitter Failed Self-Diagnostic

Test

Press the STATUS key on the MXC. Confirm that the message "FAILSAFE"

appears in the upper right corner of the display.

With transmitter in FAILSAFE mode, see paragraph A of this section and

perform steps 3 to 5.

6.3.2.2 Possible Transmitter Output Problems

In this section, Tables 6.5 through 6.9 provide information on diagnosing several types of analog output

malfunction symptoms. Under each symptom, possible causes are identified and corrective action

suggested.

TABLE 6.5 Symptom - Zero or Low Output

POSSIBLE CAUSE CORRECTIVE ACTION

Transmitter accidentally configured

for Digital Mode. Output current

reads a constant 4.000 mA.

Configure transmitter for Analog Mode by changing its short address to zero;

See Section 3.

Transmitter Electronics Failure Determine if transmitter communicates with MXC by executing FIND XMTR

program on MXC; see Section 3. Refer to Section 6.3.2.1, paragraph B, to

troubleshoot a communications failure.

Check transmitter STATUS. If a FAILSAFE message is posted, refer to

Section 6.3.2.1, paragraph A, for troubleshooting procedures.

If transmitter STATUS checks OK, at the Main Menu, select LOOP OVRD

(loop override). Verify the loop by setting the output current to 4, 12 and 20

mA. If an Digital Meter is not installed, verify current by connecting an

ammeter to the transmitter’s TEST +/- terminals.

If the measured selected loop currents are significantly low in value, or loop

current cannot be set, replace the Electronics Module. See Section 6.5.2.

If transmitter passes loop override test, transmitter electronics are OK.

Continue troubleshooting.

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Siemens Pacemaker UM344-2 Manual de usuario Pagina 124