Omega CN4321, Руководство пользователя, Страница: 63 / 83

ERROR MESSAGES
Error
Indication
Cause Control Output
1. Thermocouple burnt out. When the burn-out
2. RTD (A) leg burnt out. control output is set for
3. PV value exceeds P-SU lower limit (standard):
by 5% FS. OFF, or 4mA or less.
1. When RTD (B or C) is When the burn-out
burnt out. control output is set for
2. When RTD (between upper limit: ON, or 20mA
A and B, or between or less.
A and C) is shorted.
3. When PV value is below
P-SL by 5% FS.
4. When analog input wiring
is open or short.
When PV value goes below Control is continued until
-1999. the value reaches -5% FS
or less, after which burn-
out condition will occur.
HB lamp ON Heater burnout condition Normal control output for
heating is continued.
When the setting of OFF, or, 4mA or less.
P-SL/P-SU is improper
Fault in the unit Undefined. Stop use
immediately.
62