Athena 2000 Series Manual de operação - Página 13

Procurar online ou descarregar pdf Manual de operação para Controlador Athena 2000 Series. Athena 2000 Series 16 páginas. Temperature/process controller
Também para Athena 2000 Series: Manual de instruções (20 páginas)

Imprimir página

Symptom.

Temperature overshoots, or

oscillates

Probable Cause.

Process overpowered

Bandwidth too narrow

Process or sensor lag

Symptom.

Process control temperature

stabilizes above or below set- point as

read on deviation meter

Probable Cause.

- Offset (manual reset) incorrectly adjusted

- Partial short to ground in heater when

used on 240 V line

- No output from suspect control

- Controller reading other zones of multi-

controlled process

- Full output from suspect control

- Apparent stabilization from other zones of

multi-controlled process

- Improperly sized heater

Check -

Check bandwidth

Loose heater or sensor fit. Poor relative location.

Corrective Action

- Reduce total heater power

- Widen band

- Improve fit, locate closer together

Check -

Offset (manual reset) Heater to ground resistance.

Design parameters for process heat required

Corrective Action

- Adjust (+) to increase controlled temp. (-) to decrease temp.

- Replace defective heater