Programmable controller

CD-R It is an open frame electronic module, multiloop process controller. It is particularly indicated for regulation in the HVAC sector. It is normally installed on board coolers, air conditioners for data center rooms, and piston-type compressors. The parameters can be set using the remote operator panel, equipped with an LCD display with 8 function keys, 8 signaling LEDs and a buzzer.


Technical features MODULE CD-R

  • Power supply: from 24 Vac, to 48 Vdc +/- 25% (without polarity constraint) with psophometric residue within the limits prescribed for telephone systems powered by a central unit battery

  • Analog in.: 4 inputs for NTC10kOhm probes + 4 configurable inputs: NTC 10kOhm, 4 ÷ 20 mA, 2 ÷ 10 Volt with user-definable Start scale and full scale values, 10 bit resolution

  • Stabilized power supply output for transducers: 20 Vdc @ 0,2 A protected against short circuit

  • Proportional controls for actuators: 2 user-definable analog outputs in 0-10 V or 2-10 V

  • Acquisition of digital inputs: 16 in total, divided into groups with a separate municipality: 4 groups of 4 inputs for -48 signals; +48 Vdc, 24 Vac; (optional group of 4 inputs for 230 Vac)

  • Relay outputs, 12 + 4 (optional) with capacity from 5A to 230 Vac divided as follows: 4 with NO contacts, 8 with 2A to 230 Vac change-over contacts.

  • Power supply and serial interface for the operator panel

Basic software:

  • up to 8 adjustment loops

  • Adjustments available ON-OFF, PID, PWM, for motorized 3-point servocontrol

  • 2-level alarm diagnosis: Alarm (anomaly) and Block with display of the type of fault.

  • Manual commands: From the operator panel, from P.C., or from the supervision system it is possible to force the status of the outputs (activation / deactivation); view the status of the acquired inputs, the status of the controlled outputs,

  • Serial communication: Option RS-485, MODBUS-ASCII / RTU protocol

  • Operating range: -20 ÷ 65 ° C (storage -40 ÷ 85 °)

  • Connections: sectionable terminals block suitable for cable up to 1.5 mmq,

  • Execution: card to be fixed with screws on the bottom of the panel; Dimensions: L 335 x W 113 x H 50 (mm)

OPTION: enclosure for mounting on din / omega bar (dimensions W 340 x W 123 x H 60 (mm)

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Order code:

Code 762200A0
Operator panel RP-01, Made in DIN 43700 container, dim. H96 x L192, P 50 (mm) suitable for front panel installation. Equipped with:

front in lexan screen printed anti-scratch
with display with 4 lines of 20 alphanumeric backlit characters
8 signaling LEDs
8 functional keys.
buzzer for audible alarms
power supply from CD-R module via an 8-pole extension
IP 54 protection
operating range: 0 ÷ 50 ° C (storage -20 ÷ 65 ° C)

Example of an application that can be used
Code 8026TC12
CD-R basic module with Compressor Management firmware. It controls a refrigeration system composed of a refrigeration compressor, the relative heat exchangers and the control pumps of both the refrigerated fluid and the condenser cooling fluid. A system can be composed of one or more refrigeration compressors that cool a tank to a certain temperature set by the user. Each compressor will be governed by a CD-R, which can perform all the functions of specific control of the unit in an autonomous or coordinated way