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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.4.<br />

ANALOGUE INPUT<br />

No of inputs One fixed (Not isolated)<br />

Can be used with either floating or ground referenced transducers of<br />

low impedance.<br />

Input range -10V to +10V linear or 0 -20 mA with burden resistor of 100*.<br />

Calibration: ±(1.5mV + 0.1% of reading)<br />

Resolution: 0.9mV<br />

Drift: < ±(0.1mV + 0.006% of reading) per °C<br />

Input Impedance: 0.46MΩ (floating input), 0.23MΩ (ground<br />

referenced input)<br />

Isolation<br />

Not isolated from st<strong>and</strong>ard digital I/O . Differential type input with<br />

common mode range of + 42Vdc (the average voltage of the two<br />

inputs with respect to ‘Screen’ or ‘Common’ terminals should be<br />

within +42Vdc.<br />

CMRR : >110dB at 50/60Hz, >80dB at DC<br />

Functions<br />

Process variable, remote setpoint, power limit, feedforward, etc.<br />

C.5.<br />

ANALOGUE INPUT MODULE<br />

Allocation Up to 4 analogue input modules can be fitted in I/O slots 1,3,4 & 6<br />

mV input<br />

100mV range - used for thermocouple, linear mV source, or 0-20mA<br />

with 2.49Ω external burden resistor.<br />

Calibration: + 10µV + 0.2% of reading<br />

Resolution: 6µV<br />

Drift: < + 0.2µV + 0.004% of reading per O C<br />

Input impedance: >10MΩ, Leakage: 10MΩ, Leakage: 69KΩ<br />

Pt100 input 0 to 400ohms (-200°C to +850°C), 3 matched wires - up to 22* in<br />

each lead without errors.<br />

Calibration: ±(0.4°C + 0.15% of reading in °C)<br />

Resolution: 0.08°C<br />

Drift: < ±(0.015°C + 0.005% of reading in °C) per °C<br />

Bulb current: 0.3mA.<br />

Thermocouple Internal compensation: CJC rejection ratio >25:1 typical.<br />

CJ Temperature calibration error at 25 O C:

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