SPIRAX SARCO SX90 PROCESS CONTROLLER

SX90 SPIRAX SARCO
Process Controller

Mounting arrangement Panel mounted 1/8 DIN
Power supply 85 - 265 Vac, 9 W maximum
Electrical connections Screw connection terminal block
Panel sealing IP65 – plug in from front panel, NEMA 4X
Operating temperature /humidity 0 to 55°C, 5 to 85% RH
Atmospheres Not suitable for use in explosive or corrosive atmospheres
Electromagnetic compatibity (EMC) EN 61326
Electrical safety BS EN 61010 Installation Category II
Weight 350 g
Approvals CE
Process variable inputs
Calibration accuracy < ±0.25% reading ±1 LSD
Resolution < 0.5 μV with 1.6 second filter
Input filter Off to 59.9 seconds
RTD 3 wire Pt100 DIN 43760
Bulb current 0.2 mA
Universal linear mA 4 - 20 mA, 0 - 20 mA, using external shunt resistor 2.49 W
Linear input range -10 to 80 mV
Thermocouples K, J, N, R, S, B, L, T, C, custom
Sampling rate 4 Hz (250 ms)
Cold junction accuracy < ±1°C at 25°C ambient
Accuracy linear mA < 0.1% reading
Input impedance 100 MW
Number of set points 3 plus remote set point
User calibration 2 point gain and offset
Transmitter power supply
Isolation 300 Vac double isolated
Output voltage 18 V ±15%
Current 30 mA maximum
Load regulation < 1 V over 25 mA
Control action
Proportional band 1 - 9999 Engineering units or 0.01 to 300 %age or 0.1 - 3000
Integral time Off - 9999
Derivative time Off - 9999
Error band One shot tune, or natural frequency tune. The controller will automatically select the best
method according to the process conditions.
Auto tuning Hysteresis from 0.01 to 300.0 or 0.1 to 3000 Engineering units
On-Off control 1 - 9999 Engineering units or 0.01 to 300 %age or 0.1 - 3000
Cut back To minimise overshoot on critical processes.
Auto / manual modes Selectable from keyboard.
Split range 2 parameters that give: The full opened valve 1 and The start-up valve 2
Relays
Isolation 300 Vac double insulated
Logic inputs (x3)
Contact closure Open > 1200R, Closed < 300R
Comms
Isolation 300 Vac double isolation
Hardware EIA 485 5 wire (EIA 422 compa