Carbolite 2116 used for over temperature protection - Manual (Page 2)

2132/2116 Overtemperature Controller
2
MC03 – 1.04
1 D ESCRIPTION
1.1 2132 or 2116 Controller
The models 2132 and 2116
overtemperature controllers are
made by Eurotherm, and are fitted
by Carbolite configured for
immediate use. The two models
are the same except for the size.
They are digital instruments with
a latching alarm, requiring no
additional panel controls.
The 2132/2116 features easy setting of overtemperature setpoint, and reading of current
temperature at the overtemperature sensor.
The controller does not contain a real-time calendar, and is not subject to century-end date
problems.
2 B ASIC O PERATING I NSTRUCTIONS
2.1 Furnace or Oven Controls
Most Carbolite products are fitted with an “Instrument Switch” which cuts off power to the
controller and other parts of the control circuit. See the instruction manual for the furnace or oven
for the overall operating instructions.
To operate the 2132/2116 there must be power to the furnace or oven, and the Instrument switch
must be on. If a time switch is included in the furnace or oven circuit, this must be in an On
period.
When an overtemperature condition occurs, the controller cuts the power to a contactor, which in
turn cuts power to the heating elements. Power is not restored until the controller is “reset”.
Other components do not generally have power to them cut on overtemperature; oven fans
usually remain running, but may not do so if other options (such as a door switch) are fitted.
2.2 The 2132/2116 – Operation
When switched on, the controller lights up, goes through a short test routine, and then displays
the measured temperature or the overtemperature setpoint.
The Page key  allows access to parameter lists within the controller; most lists and parameters
are hidden and cannot be accessed by the operator because they contain factory-set parameters
which should not be changed.
A single press of the page key  displays the temperature units, normally set to °C; further
presses reveal the lists indicated in the Navigation Diagram in section 4.
The Scroll key  allows access to the parameters within a list. Some parameters are display-
only; others may be altered by the operator.
A single press of the scroll key  in the Home list displays the temperature units; further presses
reveal the parameters in the current list indicated in the Navigation Diagram.
To return to the Home list at any time, press Page  and Scroll  together, or wait for 45
seconds.
The Down  and Up  keys are used to alter the setpoint or other parameter values.