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