The 2204e/2208e is a versatile, high stability temperature or process controller, with
self tuning, in 1/4 DIN and 1/8 DIN sizes. It has a modular hardware construction with
the option of two control outputs, two alarm relays and a communications module.
Two Digital inputs are included as standard. The hardware is configurable for heating,
cooling or alarms. The 2204e/2208e is fully configurable on-site.
Precise control
An advanced PID control algorithm gives stable ‘Straight-line’ control of the process. A
one-shot tuner is provided to set up the initial PID values and to calculate the
overshoot inhibition parameters. On electrically heated loads, power feedback is used
to stabilise the output power and hence the controlled temperature against supply
voltage fluctuations. Dedicated cooling algorithms ensure optimum control of fan,
water and oil cooled systems.
Universal input
A universal input circuit with an advanced analogue to digital convertor samples the
input at 9Hz and continuously corrects it for drift. This gives high stability and rapid
response to process changes. High noise immunity is achieved by rejection of 50/60Hz
pick-up and other sources of noise. Sensor diagnostics are also provided. The input will
accept all standard thermocouples, the Pt100 resistance thermometer and linear
millivolts, milliamps or DC volts.
Input filtering from OFF to 999.9 seconds is included.
Customised operation
A custom LED display provides a bright, clear display of the process value and setpoint.
Tactile push buttons ensure positive operation. Access to other parameters is simple
and easy to understand and can be customised to present only those parameters that
need to be viewed or adjusted. All other parameters are locked away under password
protection.
Alarms
Up to four process alarms can be combined onto a single output. They can be full scale high
or low, deviation from setpoint, rate of change or load failure alarms. Alarm messages are
flashed on the main display. Alarms can be configured as latching or non-latching and also
as ‘blocking’ type alarms which means that they will become active only after they have first
entered a safe state.
Digital communications
Available with either EIA485 2 wire, EIA422 4 wire or EIA232. With industry-standard
protocols including: Modbus®, Eurotherm Bisync, DeviceNet®.
• Heating and cooling
with two modular
outputs
• Motorised Valve output
• Customised operation
• Heater current display
• Load diagnostics
• Up to three alarm relays
• 10amp output
(2204e only)
• Self-tuning with overshoot
inhibition
• Optomised fan, water and
oil cooling
• Setpoint rate limit with
timer function
• Digital communications
• Plug-in from front
• IP65 panel sealing
• Compliant with
European EMC
and low voltage
safety directives
• 3 Year warranty
Features
(4 pages)
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