Owner manual

16
High Limit
The control has an integrated high limit function which will disable the heater output
when tripped. If the high limit does trip, the relay will need to be manually reset. When
the high limit relay is tripped, the Hi-Limit indicator will be lit. Allow the oven to cool
several degrees (or increase the high limit setpoint) and then press the Reset key. The
indicator will turn off.
The control will not allow the high limit setpoint to be set below the current setpoint
value.
Indicators
The Protocol Plus control has 12 indicating LEDs that provide operational information to
the user.
Power LED: Indicates that power is supplied to the instrument.
Heater LED: Indicates that the heater output is active.
Profile LED: Indicates that the Profile Mode is in operation.
Timer LED: Indicates that the Timer Mode is in operation.
Manual LED: Indicates that the Manual Mode is in operation.
Cycle Complete LED: Indicates that the control is in Stopped mode.
Hi-Limit Alarm LED: Indicates that the high limit relay has tripped (de-energized).
Soak Alarm LED: Indicates that the guaranteed soak deviation is in alarm condition.
Outputs 1 through 4: Indicate that the optional relay outputs are in the ON state.
These outputs may be configured as timed event outputs, process temperature trip
point outputs, alarm outputs, or as an end of cycle relay output. The ON state can be
configured as energized or de-energized.