Can the Pentair PASRW130S-U-T3-60 (55kW) be programmed using the PC4001?

PHNIX PC4001 is a main controller / control board designed for equipment including air-to-water heat pumps

결론: 예, but there are two approaches — directly replace the original control board, or use the PC4001 (PLC) to fully rewrite the control program.

The Pentair PASRW130S-U-T3-60 is a 55kW swimming pool / industrial heat pump / water chiller unit (with heat recovery, T3 operating condition, 60Hz model). It comes factory-fitted with a dedicated PC4001 heat pump controller (not the Phoenix Contact RFC 4001 PLC). Your question is: Can the Phoenix Contact RFC 4001 (PLC) be programmed to control this 55kW unit?

1. 첫 번째, distinguish between the two “PC4001” 단위 (critical)

Original PC4001 (dedicated heat pump board)

The factory-installed controller for your unit: dedicated temperature control board for swimming pools and heat pumps

Built-in functions: cooling / heating / defrosting / 4-way valve / 팬 / water pump / protection logic

인터페이스: temperature probes (NTC/PT1000), high/low pressure switches, water flow switch, 압축기, 팬, 4-way valve, water pump, alarm output

Cannot be programmed with PLC software; parameters can only be set via the control panel or RS485 communication

Phoenix Contact RFC 4001 (PLC)

General-purpose PLC, requires matching I/O modules

Can fully replace the original PC4001 and control this 55kW unit with custom programming

2. Key control requirements for the Pentair PASRW130S-U-T3-60 (55kW)

Compressor: 55kW, 380V/60Hz, star-delta starting (KM1/KM2/KM3)

Operating modes: cooling / heating / automatic / defrosting

Controlled devices:

Compressor (star-delta)

Condenser fans (1–2 units)

Evaporator / water pump

4-way valve (cooling/heating switching)

Water flow switch, high/low pressure protection, oil pressure differential, discharge temperature, anti-freeze protection

Sensors:

Inlet water temperature, outlet water temperature, 주변 온도, discharge temperature, coil temperature (NTC/PT1000)

High pressure switch, low pressure switch (평상시 닫혀 있음), water flow switch

3. Hardware configuration for Phoenix Contact RFC 4001 (ready for direct use)

Controller: RFC 4001 (PC4001)

Digital Inputs (DI, 10 전철기): IB IL 24 DI 16

High pressure switch, low pressure switch, oil pressure differential, water flow, phase sequence, 비상 정지, local/remote switch, start command, stop command, defrost request

Analog Inputs (일체 포함, 5–6 points): IB IL AI 4/I + IB IL PT4

Inlet water temperature, outlet water temperature, 주변 온도, discharge temperature, evaporation/condensation temperature, high pressure sensor (선택 과목)

Relay Digital Outputs (DO, 8–10 points): IB IL 24 DO 16-R

Compressor KM1, KM2 (star), KM3 (delta), condenser fan 1, condenser fan 2, water pump, 4-way valve, alarm output, defrost valve (선택 과목)

4. Control logic (directly programmable in PLC)
5. Start conditions

No alarms for high pressure / low pressure / oil pressure differential / water flow / phase sequence / 비상 정지

Valid start command received

2. Mode control

냉각: 4-way valve de-energized

난방: 4-way valve energized

Automatic: auto-switching based on water temperature

3. Sequence (standard heat pump)

Start → run water pump / fans first → time delay → star-delta start of compressor

Stop → stop compressor first → time delay to close valves / stop fans / stop water pump

4. 보호 (immediate shutdown)

High pressure, low pressure, oil pressure differential, loss of water flow, 위상 순서 오류, high discharge temperature, anti-freeze protection, sensor fault

5. Defrost logic (heating mode)

Enter defrost based on timer + coil temperature conditions

Reverse 4-way valve, run compressor, stop fans, open defrost valve

Exit defrost when temperature setpoint or timer is reached

5. Feasibility and risks

✅ Fully feasible

The RFC 4001 can implement all functions: 55kW star-delta control, I/O quantity, protection logic, mode switching

래더 다이어그램 (LD) / 기능 블록 다이어그램 (FBD) programming in PC Worx, consistent with standard water chiller/heat pump program structure

⚠️ Important notes

60헤르츠: Adjust program time delays and protection parameters for 60Hz operating conditions

T3 condition: Adapt high pressure protection setpoints and fan control logic for high-temperature environments

Original protocol: Cannot directly read data from the original PC4001; full disconnection and re-wiring of I/O is required

인증: CE/UL certifications for the unit will need re-evaluation after replacement (generally acceptable for industrial in-house use)

6. Recommended solutions
7. Keep the original PC4001

Stable, no programming required, adjustable parameters via control panel

Disadvantage: no customizable logic, only monitoring via RS485

2. Rewrite control with Phoenix Contact RFC 4001 (your intended solution)

장점: fully customizable logic, integration with upper computers / IoT, multi-unit linkage, advanced protection

구현: program according to the above I/O list, wiring and logic; fully capable of controlling this 55kW PASRW130S

7. Short answer

예.

The Phoenix Contact RFC 4001 (PLC) can be fully programmed to control the Pentair PASRW130S-U-T3-60 (55kW) by programming the unit’s I/O points, star-delta sequence, operating modes and protection logic.

1. Core conclusion (clear and definitive)
2. The PC4001 installed on your unit

is a Pentair dedicated heat pump controller,

→ cannot be programmed with PLC software; only parameter adjustment via panel and RS485 communication is available.

2. If your question is: Can the Phoenix Contact RFC 4001 (PLC) control this 55kW unit?

→ Absolutely yes, with full functionality.

You may remove the original control board and use the Phoenix Contact PC4001 PLC with custom programming to control this Pentair 55kW water chiller / heat pump unit.

Why is it possible? (Key matching points)

The Phoenix Contact RFC 4001 fully meets the control requirements of this PASRW130S 55kW unit:

Controls 55kW compressor star-delta starting ✅

Controls condenser fans, water pump, 4-way valve ✅

Reads high/low pressure switches, water flow, phase sequence, emergency stop ✅

Reads NTC/PT1000 temperature probes (inlet/outlet/discharge/ambient) ✅

Implements cooling/heating/automatic/defrost logic ✅

Implements complete protection logic (high pressure, low pressure, oil pressure differential, anti-freeze, 초과 적재) ✅

Supports Modbus remote monitoring ✅

In short:

Sufficient hardware, sufficient I/O, programmable logic, compatible power rating.

Can the original PC4001 be programmed directly?

아니요.

The original PC4001 is a dedicated fixed-program controller, not a programmable PLC.

It cannot be programmed with software such as PC Worx or Codesys.

One-sentence summary

To use the Phoenix Contact RFC 4001 PLC with custom programming to control this Pentair 55kW unit:

예, fully feasible — a common retrofit solution in engineering.

To program the on-board PC4001 panel directly:

아니요, it is not a programmable logic controller.