Chromalox 2104 Catalog Page

2104

1/4 DIN Temperature
and Process Controller

• DualPID&FuzzyLogicControl

• ControlLoopProtection

• FiveOutputs-Control,Alarm
 orEvent

Controls

• UniversalSensorInputs:TC,
 RTD,VoltageandCurrent

• SwitchingPowerSupply
 100-240Vacor
 12-24Vac/Vdc,50/60Hz

• 16SegmentRamp/Soak 
 Program

• DigitalCommunicationswith

TM

 ChromaSoft

SpecView® 

 SoftwareCompatibility

• Isolated12VdcPower
 SupplyOption

• OperatingAmbientupto150˚F

• ThreeYearWarranty

Description

The Chromalox 2104 1/4 DIN Temperature and
Process Controller is a low cost, high
performance single loop controller that can be
used for temperature, flow, pressure and level
control applications. With universal sensor
inputs and front panel operator setup, one
2104 controller can be easily field configured
for a wide variety of applications, and simply
reconfigured as application needs change.
This makes it an exceptional choice for OEMs
and distributors with multiple control needs,
manufacturing facilities, testing facilities and
testing applications.

Features

• Five (5) Possible Outputs for Single Output

or Heat/Cool Control, plus up to three Alarm
or Event Outputs.

• Universal Sensor Input accepts thermo­couple, RTD or analog signals, provides

24Vdc Output for loop power.

• Self-Tuning with Fuzzy Logic optimizes PID
control and minimizes overshoot.

• Digital Input for remote switching of one of
the following:

• AUX Pushbutton and LED for front

panel switching of:

• PID1/PID2

• Remote/Local Setpoint

• Main/Auxiliary Setpoint

• Ramp/Soak Operation

• Manual/Auto Control

• Security Code Protection prevents

unauthorized access.

• Setpoint Ramp Rate provides Soft

Start at powerup, or on setpoint
changes, to prevent uneven heating
and overshoot.

• Control Loop Protection provides

process protection from:

• Open Sensor

• Shorted Sensor

• Sensor Reversed

• Control Output Open or Shorted

• Power Control Device Open or
Shorted

• Load Power Missing and Self
Diagnostics.

H-8

• PID1/PID2

• Remote/Local Setpoint

• Main/Auxiliary Setpoint

• Ramp/Soak Operation

• Manual/Auto Control

• Alarm Reset for Latching Alarms

• 16 Interval Ramp/Soak Program with guar-

anteed soak, 3 event outputs and looping.

• Programmable Analog Output
and Remote Setpoint Input

Self-Tuning with Fuzzy Logic

Setpoint

Typical PID Control
PID + Fuzzy Logic

Temperature

Time

Control

Controls

2104 Controller (cont’d.)

Specifications

Control Modes Automatic ...........................................On/Off, Proportional (P), PID, PID + Fuzzy Logic, Heat/Cool

Control Adjustments Control Setpoint .................................Sensor Range

Setpoint Limits ...................................Sensor Range

Deadband ...........................................1-100˚F

Proportional Band ..............................Sensor Range

Manual Reset .....................................-99.9 to +99.9

Automatic Reset .................................0-99.99 repeats/min.

Rate ...................................................0-500 sec.

Output Cycle Time ..............................0.0-60.0 sec.

Output Limit .......................................0-100%

Open Sensor/Out of Range Output .....0-100%

Display Offset .....................................-100 to +100˚F

Heat/Cool Adjustments Output Offsets ....................................0-100% Prop. Band

Cooling Medium .................................Air, Water or Oil

Alarm Adjustments Setpoints ............................................High and Low Settings for each Alarm Output

Alarm Types .......................................Absolute: High, Low and High/Low

...........................................................Tracking: + Deviation, - Deviation and +/- Deviation

Relay Action .......................................Latching or Non-Latching, Energized or De-Energized

Alarm Deadband ................................Adjustable, 0-100˚F

Control/Alarm Outputs Total of five (5) Control/Alarm outputs possible

Relay ..................................................Relay–Form A contacts, 1 Amp at 120/230 Vac (resistive load)

Solid State Relay Drive .......................24Vdc nominal at 40mA

Triac ...................................................1 Amp continuous, 10 Amp in-rush, at 120 or 230 Vac

Current/Voltage ..................................4-20mA into 0-800Ω, field changeable to 1-5Vdc

Output #5 (Optional) Relay–NO. Form C contact, 5A at 120 or 2.5A at 230 Vac
Sensor Input Specifications Range ˚F Range ˚C

J T/C ..................................................-100 to +1400 -73 to +760

K T/C ..................................................-300 to +2400 -184 to +1316

T T/C ..................................................-350 to +750 -212 to +399

E T/C ..................................................-100 to +1100 -73 to +593

R T/C ..................................................0-3200 -18 to +1760

S T/C ..................................................0-3200 -18 to +1760

B T/C ..................................................50-3300 10-1816

100Ω Pt RTD (a = 0.00385) .................-200 to +1000 -128 to +538

RTD (0.1˚ res.) ...................................-99.9 to +899.9 -73.3 to +482.2

4-20mA ..............................................-500 to +5000 (programmable)

0-5 Vdc ..............................................-500 to +5000 (programmable)

1-5 Vdc ..............................................-500 to +5000 (programmable)

Ramp/Soak Programming Intervals .............................................16 intervals

Loops .................................................1 loop, 0-255 times or continuous

Event Outputs ....................................Up to 3

Guaranteed Soak Differential ..............Off, 1˚F to sensor span

Time Units ..........................................Seconds, Minutes, Hours (1 second to 99.99 hours/segment)

Remote Setpoint Input Input Signal .......................................4-20mA or 1-5Vdc, Field Selectable

Digital Input Accepts dry-contact closure

Analog Output Option Assignable Functions .........................Process Variable Output #1 Command

...........................................................Active Setpoint Output #2 Command

Output Signal .....................................4-20mA into 0-800Ω load, 1-5Vdc into 100KΩ or greater load

...........................................................Selectable via DIP switch

Range .................................................Programmable for retransmission of Process Variable and Active Setpoint

Isolated DC Power Supply Option 12Vdc, 50mA Max

Digital Communications (Optional)

RS-232 Single drop, isolated
RS-422/485 Multi-drop, isolated, field selectable by switch

Baud Rates .........................................1200, 2400, 4800, 9600, 19200

Protocols ASCII Line, Computer Interface

Instrument Power 100-240 Vac, +10%, -15%; 12-24 Vac/Vdc, ± 10%; 50-60 Hz, 15vA

Operating Environment 32-150˚F (0-65˚C) ambient temperature, relative humidity < 95%, non-condensing

SINGLE CHANNEL

H-9