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1500°C Tube Furnace
Main Controller: 25x500 Segment
Programmable
Eurotherm 3504 Controller
The 3504 temperature process controller is a single Loop PID based controller that can
store up to 25 programs with up to 500 Segments. A 'Factory' code used to configure all
the functions essential for temperature controlling process This includes input sensor
type, measurement range, control options and alarms.
Controller Operation
After switching on the unit, the controller following a brief self-test sequence will start up
in AUTO mode.
NOTE
Manual operation means that the controller output power is adjusted by the user. The
input sensor is still connected and reading the PV but the control loop is open.
Auto means that the controller is automatically adjusting the output to maintain
control, i.e., the loop is closed.
If the controller is in manual mode, 'MAN' light will be indicated.
If the controller is powered down in Manual operation, it will resume this mode when it
is powered up again.
Auto tune can be performed at any time, but normally it is performed only once during
the initial commissioning of the process. However, if the process under control
subsequently becomes unstable (because its characteristics have changed), it may be
necessary to tune again for the new conditions.
Main Controller: 25x500 Segment Programmable |
Chapter 7
305435H03 | 7-45
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