AR660 DIN Rail PID Controller with RS485 Modbus Comms

AR660 DIN Rail PID Controller with RS485 Modbus Comms
Our Price:  £149.00(£178.80 Inc. VAT)
Power Supply:  
Control Output:  

Analogue Inputs:  1
Digital Outputs:  3
Temperature Inputs:  1



1 in stock, immediate despatch

The AR660 is a DIN-rail mount PID temperature and process controller accepting Volts, mV, 4-20mA, thermocouples, RTD sensors and resistances.  Featuring 3 relay or SSR outputs, analogue re-transmission of the process value, PID, ON-OFF, fuzzy logic control. With an RS485 port supporting the Modbus communications protocol. Programmed with a handheld programmer or with free software.

Special Offer:  Discounts of 7%, 10%, 12.5% and 15% are available when you order 10, 25, 50 and 100 items or more of this product.

  • microprocessor controller for temperature and other physical quantities (humidity, pressure, level, speed, etc.) converted into a standard electrical signal (0/4-20 mA, 0-10 V, 0-60 mV, 0÷2.5 kΩ)
  • universal thermometric and analogue input with the memory for storing minimum and maximum measured values:
    • Resistance thermometer: Pt100, Ni100, Pt500, Pt1000
    • thermocouples J, K, S, R, T, B, E, N
    • current 0-20 mA, 4-20 mA
    • voltage 0-10 V, 0-60 mV
    • resistance 0-2500 Ω
  • remote data display via RS485 (MODBUS-RTU, SLAVE)
  • programmable digital input for changing operational mode of the controller:
    • control start/stop
    • manual/automatic mode for outputs
    • two-position switching of the set value (day/night)
    • keyboard lock
    • Display HOLD function
  • 2 or 3 outputs of ON/OFF type (ON-OFF, control, 2- and 3-position) with the following characteristics:
    • output 1 (main): ON-OFF with hysteresis, PID, fuzzy logic (auto-tuning) PID
    • output 2, 3 (auxiliary/alarm): ON-OFF with hysteresis
  • analogue output 0/4-20 mA, optionally 0/2-10 V (constant-control, re-transmission)
  • advanced function of selecting PID parameters with fuzzy logic elements
  • built-in 24 Vdc power supply for supplying on-site transducers
  • RS485 serial interface, galvanically isolated, MODBUS-RTU
  • programmable input, range of indications (for analogue inputs), options for adjustment, alarms, displaying, access and other configuration parameters
  • access to configuration parameters is protected by the user's password
  • methods for configuring parameters:
    • via membrane keyboard (IP65) located on the front panel of the device;
    • via RS485 or PRG port (programmer AR955) and freeware: ARsoft-LOG (Windows 7/8/10)
  • software and programmer allow you to view the measured value and quickly configure single or few sets of parameters previously saved in the computer for re-use, e.g. in other controllers of the same type (duplicate configuration)
  • high accuracy, long-term stability and immunity to interference
  • optionally (when ordered)
    • SSR control outputs
    • analogue output 0/2-10 V (instead of output 0/4-20 mA)
    • power supply:
      • 230 Vac (85÷260 Vac) / 3 VA
      • 24 Vac/dc (20 ÷50 Vac / 3 VA, 20 ÷ 72 V dc / 3 W)
  • operating temperature range: 0-50 °C
  • relative humidity range: 0-90 %RH (no condensation)
  • housing for rail mounting on TS35 rail (DIN EN 50022-35)
  • ingress protection rating: IP20
  • material: ABS/PC



ARsoft-CFG application allows you to configure and readout current measurements carried out by AR series devices (controllers, meters, transducers, recorders, etc.) equipped with communication interface RS232, RS485, USB or Ethernet.

The application has the following features:

  • visualization of all available measurements for the selected type of device
  • fast, on-line editing of device parameters
  • window for configuring parameters includes textual descriptions of parameters and their range of variation
  • reading and recording device configuration with an option of text edition of the created file.

Hardware requirements:

  • Operating System: Windows 7/8/10
  • depending on the type of communication interface of the device connected:- COM port RS232 or RS485 (it is also possible to use converter from USB to RS232/RS485)- USB port- Ethernet network card


Free software for archiving and graphical presentation of measurement data.

  • import of measurements recorded by APAR recorders from CSV text files
  • creating reports based on archived data
  • import options:
    • option of verifying the checksum enabling user to detect modifications to the original file with measurements
    • automatic equipment identification (device ID) - for imported file source
  • reporting options:
    • preparing reports for any device and selected time periods
    • option of marking the alarm thresholds on generated charts
    • exporting reports to CSV text files and graphic PNG and WMF files
    • printout of graphical reports.
  • hardware requirements:
    • Operating System: Microsoft Windows 7/8/10
    • Processor and RAM in accordance with the recommendation of the manufacturer of the operating system
    • Recommended minimum screen resolution: 1024x768


User Manual >>

ARsoft-CFG  Software >>

ARsoft-LOG Data Software >>