Refrigeration Case Controller (rcc.521)
Product Description
Product Description
The Refrigeration Case/Circuit Controller (rcc) is a component of Novar’s Open Architecture, OpusTM Refrigeration Control System. It consists of a control module with five inputs, two outputs, and one valve support, a remote display module and a selection of compatible refrigeration temperature and pressure sensors.
Application
Application
The rcc.521 is designed to be mounted in an un-refrigerated, non-condensing, location inside a refrigerated display case, inside a compressor rack house electrical panel or an electrical panel controlling a walk in freezer/cold room. The rcc.521 is a multi-function controller capable of executing several refrigeration control strategies.
1. DX System Electronic Expansion Valve (EEV) Control
2. DX System Electronic Evaporator Pressure Regulator Valve (EEPR) Circuit Control
3. Secondary Loop Case Control (Glycol or CO2)
4. Secondary Loop Circuit Control (Glycol or CO2)
Specifications
Specifications
| Analog Inputs | Specifications | Use |
|---|---|---|
| Temperature 1 | 2K Ohm NTC +/- 2 Deg F | Suction Temperature |
| Temperature 2 | 2K Ohm NTC +/- 2 Deg F | Discharge Air Temperature |
| Temperature 3 | 2K Ohm NTC +/- 2 Deg F | Defrost Termination Temperature |
| Pressure 1 | 3-wire 5V ratio metric | Suction Pressure |
| Digital 1 | +5VDC dry contact | Refrigerant Leak Detection or Dual Temperature Case Switch2 |
| Digital Outputs | Specifications | Use |
| Relay 1 | 100-240VAC, 3A Max | Direct Line Voltage control of Evaporator Fans |
| Digital 1 | 22-28Vdc, 250mA Max | Used to energize Electric Defrost Relay (if used) or Solenoid Valves3 |
| Valve Drivers | Specifications | Use |
| Stepper Valve 1 | 12Vdc, Bi-Polar or Uni-polar Valves | Interface to Stepper EEV or EEPR Valves4 |
| Digital 13 | 22-28Vdc, 250mA Max | Interface to 24Vdc Liquid Line Solenoid Valve |
| Remote Display Port | Specifications | Use |
| RCC-RDM Interface | 12Vdc, Simple Serial Protocol, RJ45 cable, 10 Meters Max | Connect an optional Remote Display Module |
| Network Comm Port | Specifications | Use |
| BACnet | MS/TPRS-485, 1/8 unit load (4000ft max distance) 9.6, 19.2, 38.4, 76.8K baud | Remote device configuration, alarm collection management, defrost cycle coordination, circuit valve control |
2 Default use is Refrigerant Leak Detection input,
3 The digital output may also be used to drive 24Vdc Valves,
4 Compatible with Sporlan SER & SEH Electronic Expansion Valves, CDS EEPR Valves and SDR Hot Gas Bypass Valves as well as 12Vdc stepper valves from other manufactures
Product Order Numbers
| Name | Order Number |
|---|---|
| Controller Module | RCC-521 |
| Remote Display Module | RCC-RDM |
| Remote Display Cables RJ45 – 2.0m | RCC-CBL-2 |
| Remote Display Cables RJ45 – 5.0m | RCC-CBL-5 |
| Refrigeration Sensors - Pressure 150 psig w/2.0m Cable | RCC-SP150-2 |
| Refrigeration Sensors - Pressure 150 psig w/5.0m Cable | RCC-SP150-5 |
| Refrigeration Sensors - Pressure 300 psig w/2.0m Cable | RCC-SP300-2 |
| Refrigeration Sensors - Pressure 300 psig w/5.0m Cable | RCC-SP300-5 |
| Refrigeration Sensors - Temperature 2K NTC w/2.0m Cable | RCC-ST2K-2 |
| Refrigeration Sensors - Temperature 2K NTC w/5.0m Cable | RCC-ST2K-5 |
| Refrigeration Sensors - Temperature 2K NTC w/8.0m Cable | RCC-ST2K-8 |