Eurotherm
High Performance Controllers & Programmers
  Overview
The 2604 is a highly accurate and stable process controller available in a single, dual or triple loop format. Features include setpoint programming and comprehensive selection of maths and logic functions.
It has a dual 5digit display of process value and setpoint with an LCD panel for display of alarm messages, programmer and loop status information.
User defined messages in the LCD panel simplify operation. The 2604 is a highly configurable product offering many features previously found only in programmable logic controllers. This allows systems to be implemented integrating the process control and logic functions of a machine, therefore simplifying system complexity and reducing the total system costs.
Configuration is achievable either via the front panel or using Eurotherm’s iTools configuration software.
     
Technical Specification  
  • Environmental performance
    Temperature limits Operation: 0 to 50°C
    Storage: -10 to 70°C
    Humidity limits Operation: 5 to 95% RH non condensing
    Storage: 5 to 95% RH non condensing
    Panel sealing: IP65, Nema 4X
    Vibration: 2g peak, 10 to 150Hz
    Altitude: <2000 metres
    Atmospheres: Not suitable for use in explosive or
    corrosive atmosphere
  • Physical
    Panel mounting: 1/4 DIN
    Dimensions and weight: 96W x 96H x 150D mm, 600g
    Panel cut-out dimensions: 92W x 92Hmm
  • Control options
    No. of loops: 1, 2 or 3 loops
    Options: Cascade, Ratio or Override
    Modes: PID, ON/OFF or Valve Position
    Applications: Carbon Potential, Humidity
  • Approvals
    CE, cUL listed (file E57766), Gost
    Suitable for use in Nadcap and
    AMS2750D applications under System
    Accuracy Test calibration conditions
  • Standard I/O
    Precision PV input
    Accuracy: ±0.1%
    Ranges: mV, mA, volts or RTD (PT100)
    Thermocouple types: J, K, l, N, R, S, B, PII, C, plus others
    Cold junction: Ext 0°C, 45°C or 50°C
    Analogue input
    Allocation: 1 fitted
    Accuracy: ± 0.1%
    Ranges: -10V to 10V or 0 to 20mA
    Digital I/O
    Types: 1 digital input
    7 Bi-directional input/outputs
    1 Changeover relay
  • Modules
    Digital outputs
    Types: Single Relay, Dual Relay, Single Triac,
    Dual Triac, Single Logic and Triple Logic
    module
    Allocation: Slot 1, 3, 4, 5 or 6 (Max 3 Triacs
    per unit)
    Digital inputs
    Types: Triple contact input, Triple logic input
    Allocation: Slot 1, 3, 4, 5 or 6
    Analogue outputs
    Types: DC Control or DC
    Retransmission (5 Max)
    Allocation: Slot 1, 3, 4, 5 or 6
    Range: 0 to 20mA or 0 to 10Vdc
    Dual Analogue outputs
    Allocation: Slot 1, 4 or 5
    Range: 4-20mA or 24Vdc transmitter PSU
    High Resolution Analogue output
    Allocation: Slot 1, 4 or 5
    Range: 4-20mA and 24Vdc transmitter PSU
    Transmitter PSU
    Allocation: Slot 1, 3, 4, 5 or 6
    Transmitter: 24Vdc @ 20mA
    Transducer supply
    Bridge voltage: Software selectable, 5 or 10Vdc
    Bridge resistance: 300Ω to 15Kohms
    Potentiometer input
    Potentiometer resistance 330Ω to 150kohms
    Precision PV input (Module)
    Allocation: Slot 3 or 6
    Accuracy: ±0.1%
    Ranges: mV, mA, volts or RTD (PT100)
    Thermocouple types: J, K, T, L, N, R, S, B, PII, C, plus others
    Cold junction: Ext 0°C, 45°C or 50°C
    Dual (Probe) input
    Allocation: Slot 3 or 6
    Accuracy: ±0.1%
    Ranges: mV, mA, volts or RTD (PT100)
    Thermocouple types: J, K, T, L, N, R, S, B, PII, C, plus others
    Cold junction: Ext 0°C, 45°C or 50°C
    Analogue input (module)
    Allocation: Slot 1, 3, 4 or 6
    Accuracy: ±0.2%
    Ranges: mV, mA, volts or RTD (PT100)
    Thermocouple types: J, K, T, L, N, R, S, B, PII, C, plus others
    Cold junction: Ext 0°C, 45°C or 50°C
  • Setpoint Programmer
    No profiles: 1, 2 or 3 profiles
    No. of programs: 50 programs max.
    No. of segments: 500 time to target segments (max.) or
    400 ramp rate segments (max.)
    Event outputs: Up to 16
    I/O Expander
    10 I/O version: 4 Changeover and 6 normally open relay
    contacts
    10 Logic inputs
    20 I/O version: 4 Changeover and 16 normally open
    contacts
    20 Logic inputs
  • Advanced Functions
    Application blocks: 32 digital operations
    24 analogue operations
    12 user values
    Timers: 4 ON pulse, OFF delay, one shot and
    min-ON
    Totalisers: 4, trigger level and reset input
    Pattern generators: 16 patterns each with 16 bits
    Real time clock: Day of the week and time
    Customisable screens: 8 user screens
    User switches: 8, toggle and momentary function
    Slave communications
    Allocation: Slot H or J (DeviceNet/Profibus slot H
    only)
    Types: Profibus DP RS485
    Modbus RTU RS485 (2 wire)
    RS485 (5 wire) or RS232
    DeviceNet
    EI-Bisyc (subset of parameters)
    Master communications
    Allocation: Slot J
    Types: Modbus RTU RS485 (2 wire),
    RS485 (4 wire) or RS232
    Parameters: 25 read/write