Emerson Rosemount CT5100, Справочное руководство

Страница: 126 / 179

11.9.14 BEKA display shows wrong gas temperature reading
Condition
The gas temperature reading is either a constant value (short circuit) or a high value of
21000 and above (open circuit) with gas readings being possibly affected.
Recommended actions
1. Check connection cable between gas temperature PT100 sensor and peripheral
board.
2. If interconnecting cable OK, replace gas temperature PT100 RTD.
11.9.15 BEKA does not display any temp and pressure values and
NAMUR relays not working
Recommended actions
1. Check power supply to peripheral board.
2. Check 20-way ribbon cable from motherboard to peripheral board.
3. Check connections to sensors and relays.
4. If all are OK, replace peripheral board.
11.9.16 BEKA display won't show any information or only
displays start-up screen
Recommended actions
1. Check SD Card is connected; if SD card is not working, replace it.
2. Ensure the 12 V PSU and 12 Vdc fuse are OK; if 12 Vdc fuse is not working, replace it.
3. Ensure connection to BEKA from motherboard is intact; if is not, replace it.
4. Check other outputs (digital and analog) are OK (if available).
5. If all interconnecting cables are OK, replace the motherboard PCB.
Troubleshooting and diagnostics Reference Manual
October 2019 00809-0100-4512
126 Rosemount CT5100(Ex)