Spirax Sarco SX90 Process Controller

Description

The Spirax Sarco SX90 Process Controller is a 1/8 DIN panel mounted controller for constant set point control with fixed preset fixed point systems. The controller has a wide range of inputs and outputs to control industrial processes using PID, and can be used with Spirax Sarco's pneumatically operated motorized control valves, electronic and electrical equipment.

specificities

• General purpose inputs: RTD, thermocouple, mA and mV.
• General purpose outputs: VMD (valve motor drive), continuous mA and voltage, relays for on/off control, and logic signals.
• Auxiliary power supply: for external transmitters requiring 24VDC.
• Setpoints: can be set locally, remotely, or selected from 4 setpoints.
• Slope: The rate of change from one setpoint to another with two separate slopes (slope up or slope down).
• Remote Setpoint: For serial control (master/slave) of two controllers, or remote setpoint control.
• Retransmission function: for retransmission of the process value or setpoint, or as a second analog output.
• Event alarms: 4 programmed relay outputs for deviation, zone and process value alarms.
• Quick Code: With a 5-digit quick code, the controller can be easily installed and debugged.
• Serial communication: Up to 64 controllers can be connected to the management system through the serial port RS485 (5 wires).
• Auto/Manual: Automatic mode and manual mode can be switched via keypad or logic input.
• Logic Inputs: 3 logic inputs provide a variety of selection functions.
• Potentiometer input: for feedback of valve position.
• Text message: can be set to scroll text message, can remind the user of the process status.
• Forced Output: The forced output level is determined by the instrument parameters and can be activated by a logic input or by writing a parameter.

accreditation

• Conforms to 93/68/EEC in accordance with EN61010-1:90 for the necessary protective conditions for electrical equipment.
• EMC emission standard: EN 61326-1: 1997 Class B (including amendments A1, A2 and A3).
• EMC Immunity Standard: EN 61326-1: 1997 Industrial locations (including amendments A1, A2 and A3).

Technical Parameters

Overall technical parameters

sports event	particulars
mounting	Panel Mount 1/8 DIN
Supply power	85 - 265Vac, 9W max.
electrical connection	screwed end
Packaging grade	IP65 - Plugged in from front panel, NEMA 4X
Working temperature and humidity	Temperature 0 - 55°C, Humidity 5% - 85%
matrix	Cannot be used in explosive or corrosive environments
Electromagnetic Compatibility (EMC)	EN 61326
Electrical Safety BS EN 61010	Installation category II
weights	350 grams
accreditation	CE

Process Variable Inputs

sports event	particulars
Calibration accuracy	< ± 0.25% (± 1 lowest significant digit LSD)
resolution (of a photo)	<0.5μV (1.6s filter)
Input Filtering	Close to 59.9s
RTD	3-wire PT100, DIN43760
Indicator current	0.2mA
General purpose linear mA	4 - 20mA, 0 - 20mA using external shunt resistor 2.49Ω
Linear Input Range	-10 - 80mV
thermocouples	K, J, N, R, S, B, L, T, C, Customized
sampling frequency	4Hz (250ms)
Cold End Accuracy	< ± 1°C at 25°C ambient temperature
Linear mA accuracy	<0.1% readings
Input Impedance	100MΩ
Number of setpoints	3 points plus remote setpoint
user calibration	Two-point gain and offset

Transmitter Power Supply

sports event	particulars
isolate	300Vac double insulation
output voltage	18V ± 15%
amps	30mA max.
Load regulation	<1V, 25mA

control

sports event	particulars
scale band	1 - 9999 engineering units, 0.01 - 300, 0.1 - 3000
Points time	Close - 9999
differentiation time	Close - 9999
error band	One-time tuning or intrinsic frequency tuning. The controller will automatically select the best method depending on the process conditions.
auto-tuning	Lag 0.01 - 300.0 or 0.1 - 3000 engineering units
switching control	1 - 9999 engineering units, 0.01 - 300, 0.1 - 3000.
abate	Overshooting is minimized during critical processes.
Auto/Manual Mode	Selection from the keyboard
Relay insulation	300Vac double insulation
Logic inputs (x3)
electrocution closure	Open >1200R, Close <300R
Communication insulation	300Vac double insulation
software	EIA 485 5-wire (EIA 422 compliant)
protocols	Modbus RTU Slave

Remote setpoint input

sports event	particulars
isolate	300Vac double insulation
Calibration accuracy	< ± 0.25% (± 1 lowest significant digit LSD)
sampling frequency	4Hz (250ms)
resolution (of a photo)	>14bits - 0.5mV (0 - 10V input), 2μV (4 - 20mA)
Input Impedance	>222KΩ (voltage), >2.49Ω (current)
Linear Input Range	0 - 10V, 0 - 20mA
Input Filtering	Close - 59.9s
zero offset	Full range of user adjustments
user calibration	Two-point gain and offset

Potentiometer Input

sports event	particulars
Potentiometer resistance range	100 - 10kΩ
excitation voltage	0.46 - 0.54V
resolution (of a photo)	0.006% range (greater than 14Bits)
sampling rate	1Hz
Short Circuit Potentiometer Detection	<25Ω
Open Potentiometer Detection	>2MΩ
Open Arc Brush Detection	>5MΩ
Contact class	Maximum 2A at 264Vac resistor 2A current. (2A max for AB terminals).

exports

sports event	particulars
Output 1	SPST normally open contact
Output 2	0 - 20mA, 4 - 20mA, 300Vac double insulated, 13.5bits resolution (<550Ω)
Output 3	0 - 20mA, 4 - 20mA, 300Vac double insulated, 13.5bits resolution (<550Ω)
Output 4	Completely changed relay contacts
Outputs 5 and 6 (VMD)	2 SPST interlocking normally open contacts
Input Filtering	Close to 59.9s
zero offset	Full range of user adjustments
user calibration	Two-point gain and offset
Open Arc Brush Detection	>5MΩ

Wiring Instructions

The installation and commissioning instructions supplied with the unit stipulate that safe operation of the controller can only be guaranteed by proper installation, commissioning, use and maintenance by suitable professionals. It is the responsibility of the company's safety personnel to ensure that the product parameters and safety information in the installation and commissioning instructions are understood and observed.