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model 2704 controller installation and operation handbook - Soliton

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Technical Specification<br />

<strong>2704</strong> Controller<br />

C.11. TRANSDUCER PSU<br />

Bridge voltage<br />

Bridge resistance<br />

Internal shunt<br />

resistor<br />

Software selectable 5 or 10Vdc<br />

300Ω to 15KΩ<br />

30.1KΩ at 0.25%, used for calibration of 350Ω bridge<br />

C.12. POTENTIOMETER INPUT<br />

Potentiometer<br />

resistance<br />

330Ω to 15KΩ, excitation of 0.5 volts<br />

C.13. DIGITAL COMMUNICATIONS<br />

Allocation<br />

Modbus<br />

Profibus-DP<br />

2 modules fitted in slots H & J (isolated)<br />

RS232, 2 wire or 4 wire RS485, max baud 19.2KB in H module &<br />

9.6KB in J module<br />

High speed, RS485, 1.5Mbaud<br />

C.14. ALARMS<br />

No of Alarms Input alarms (2), loop alarms (2) User alarms (8)<br />

Alarm types Full scale, deviation, rate of change, sensor break plus application<br />

specific<br />

Modes<br />

Latching or non-latching, blocking, time delay<br />

Parameters Refer to Chapter 7<br />

C.15. USER MESSAGES<br />

No of messages<br />

Format<br />

Maximum 50, triggered by operator or alarm or used for custom<br />

parameter names<br />

Up to 16 characters<br />

C.16. CONTROL FUNCTIONS<br />

No of loops<br />

Modes<br />

Options<br />

Cooling algorithms<br />

PID sets<br />

Manual mode<br />

Setpoint rate limit<br />

One, two or three<br />

On/off, PID, motorised valve with or without feedback<br />

Cascade, ratio, override or feed forward<br />

Linear, water, oil or fan<br />

3 per loop (Cascade loop includes master <strong>and</strong> slave parameters)<br />

Bumpless transfer or forced manual output, manual tracking available<br />

Display units per second, minute or hour<br />

C-6 Installation <strong>and</strong> Operation H<strong>and</strong>book. Part No HA026502 Issue 2.0 Apr-00

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