DatasheetDynisco ATC990 Process Controller
The Dynisco ATC990 is a universal 1/4 DIN process controller with graphical LCD display and auto-tuning function. It is designed for demanding control and monitoring tasks in plastics processing and is especially suitable for applications where process pressure, differential pressure, temperature or other process signals must be accurately displayed and controlled.
The controller provides a graphical view of process values, alarms and events. The LCD backlight can change from green to red on alarm, making critical process conditions immediately visible. The integrated setup wizard simplifies commissioning, while the adaptive auto-tuning algorithm supports efficient controller parameterization.
The ATC990 provides universal inputs for strain gauge sensors, thermocouples, linear DC signals and mA signals. An optional secondary strain gauge input can be used for differential pressure control. Via USB, Modbus RS-485 or Modbus TCP Ethernet, the controller can be integrated into modern machine and supervisory control systems. An optional data logging function records process values, setpoints and alarms as CSV files for further evaluation.
| Type | Digital panel-mounted PID closed-loop controller |
|---|---|
| Series | Dynisco ATC990 Process Controller |
| Model | ATC990 |
| Format | 1/4 DIN |
| Application | Process control, pressure control, differential pressure control, temperature control and monitoring in plastics processing equipment |
| Display | 160 × 80 monochromatic graphical LCD with backlight |
| Display function | Graphical/text view of process, alarms and events, trend view |
| Alarm display | LCD backlight can change from green to red on alarm |
| Control loop | Single-loop control |
| Control function | Adaptive auto-tuning algorithm |
| Instrument type | Digital PID closed-loop controller |
| Thermocouple accuracy | ±0.1 % of full range, ±1 LSD; ±1 °C for internal CJC if enabled |
| DC linear accuracy | ±0.1 % of full range, ±1 LSD |
| Sampling time | 50 ms, typical |
| Inputs | Strain gauge, thermocouple or linear input (VDC, mA) |
| Strain gauge input | 350…5000 Ω, 1.4…4 mV/V, excitation 10 V ±7 % |
| Linear input | 0…5 VDC and 0…10 VDC; 0…20 mA and 4…20 mA |
| Input signal | -25…125 % full scale; approximately -10 mV to +50 mV |
| Input impedance | <10 Ω for linear current input; >165 kΩ for linear voltage input |
| Shunt calibration | With or without resistor, 40…100 % |
| Digital inputs | 4 programmable voltage-free contact closure inputs |
| Alarm type | SPST, 2 A max. at 240 VAC resistive load; dual relays have a shared common |
| Alarm number | 3 standard |
| Alarm update time | 100 ms, typical |
| Retransmission outputs | 0…5 VDC, 0…10 VDC, 0…20 mA and 4…20 mA |
| Control outputs | 0…5 VDC and 0…10 VDC; 2 % under/over drive; 0…20 mA and 4…20 mA |
| Output resolution | 15 3/4 bit |
| Output accuracy | ±0.1 % of output span; mA at <500 Ω, V at >500 Ω |
| Communication interface | Isolated RS-485 |
| Protocol | Modbus RTU |
| Ethernet communication | Modbus TCP Ethernet supported |
| USB interface | For access to configuration and log files |
| Data logging | Option records process values, setpoints and alarms to CSV files |
| BlueControl software | Optional configuration and commissioning software |
| Termination | Screw terminals on rear |
| Front panel protection | IP65 with gasket, IP65 front with USB connector |
| Operating temperature | 32…122 °F / 0…50 °C |
| Storage temperature | -4…158 °F / -20…70 °C |
| Humidity | 85 % relative humidity, non-condensing |
| Weight | 1.43 lbs / 650 g |
| Mains power | 100…240 VAC, 50/60 Hz switching |
| Low-voltage power | 20…48 VAC, 50/60 Hz, 15 VA or 22…65 VDC, 12 W |
| Power consumption | 15 VA maximum |
| Transmitter power supply | 24 VDC into 400 Ω, 60 mA drive for 2- or 4-wire mA transmitters |
| CE mark | Self-certified to applicable standards |
| Agency approval | UL |
| Key features | Auto-tuning, graphical LCD, setup wizard, USB, data logging, Modbus RS-485, Modbus TCP Ethernet, optional differential pressure display |
