SeaLand 3100 Spécifications télécharger pdf (Page 46)

APT3100 Smart Pressure Transmitter Operation Manual M3100-EO1G

Duon System Co.,Ltd.

6.3 Hardware Diagnostics

If you suspect a malfunction despite the absence of any diagnostic messages on the HHT follow Table

6-1 described here to verify that transmitter hardware and process connections are in good working

order.

If you suspect a malfunction despite the absence of any diagnostic messages on the HHT follow Table

6-1 described here to verify that transmitter hardware and process connections are in good working

order.

[Table 6-1 Troubleshooting]

Symptom Potential Source Corrective Action

Transmitter

Does not

Communicate

With HART

Communicator

Loop Wiring

y Check for a minimum of 250 ohms resistance

between the power supply and HHT.

y Check for adequate voltage to the transmitter.

The transmitter always requires 11.9 ~ 45 Vdc.

y Check for intermittent shorts, open circuits, and

multiple grounds.

Sensor Input Failure

y Connect HHT and enter the Transmitter test mode

to isolate a sensor failure.

Loop Wiring

y Check for dirty or defective terminals,

interconnecting pins, or receptacles.

Power Supply

y Check the output voltage of the power supply at

the transmitter terminals. It should be 11.9 to 45

Vdc in spite of loop scale.

High Output

Electronics Module

y Connect HHT and enter the Transmitter test mode

to isolate module failure. Check the sensor limits

to ensure calibration adjustments are within the

sensor range.

Loop Wiring

y Check the output voltage of the power supply at

the transmitter terminals. It should be 11.9 to 45

Vdc.

y Check for intermittent shorts, open circuits, and

multiple grounds.

y Check for proper polarity at the signal terminals.

y Incase measuring electric current while digital

communication, output appear around +-0.013mA

Erratic Output

Electronics Module

y Connect HHT and enter the Transmitter test mode

to isolate an electronics mode failure.

Sensor Element

y Connect HHT and enter the Transmitter test mode

to isolate a sensor failure.

y Check the PV to see if it is out of range.

Loop Wiring

y Check for adequate voltage to the transmitter.

The transmitter always requires 11.9 ~ 45 Vdc.

y Check for intermittent shorts, open circuits, and

multiple grounds.

y Check polarity of singal terminal

y Check the loop impedence.

Low Output or

No Output

Electronics Module

y Connect HHT and check the sensor limits to

ensure calibration adjustments are within the

sensor range.

1 2 ... 41 42 43 44 45 46 47 48 49 50 51

Commentaires sur ces manuels

Pas de commentaire

SeaLand 3100 Spécifications Page 46

Commentaires sur ces manuels