Pentair PASRW130S-U-T3-60 は使えますか (55kW) PC4001を使用してプログラム可能?

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

結論: はい, 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. 初め, distinguish between the two “PC4001” 単位 (致命的)

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: 冷却 / 加熱 / defrosting / 4-way valve / ファン / water pump / protection logic

Interfaces: temperature probes (NTC/PT1000), high/low pressure switches, 水流スイッチ, コンプレッサー, ファン, 4-way valve, water pump, 警報出力

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)

コンプレッサー: 55kW, 380V/60Hz, star-delta starting (KM1/KM2/KM3)

Operating modes: 冷却 / 加熱 / 自動 / defrosting

Controlled devices:

コンプレッサー (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

センサー:

Inlet water temperature, outlet water temperature, ambient temperature, discharge temperature, コイル温度 (NTC/PT1000)

High pressure switch, low pressure switch (通常は閉まっている), 水流スイッチ

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

コントローラ: RFC 4001 (PC4001)

デジタル入力 (から, 10 ポイント): IB IL 24 から 16

High pressure switch, low pressure switch, oil pressure differential, 水の流れ, 相順, 非常停止, local/remote switch, start command, stop command, defrost request

アナログ入力 (AI, 5–6 points): IB IL AI 4/I + IB THE PT4

Inlet water temperature, outlet water temperature, ambient temperature, discharge temperature, evaporation/condensation temperature, high pressure sensor (オプション)

リレーデジタル出力 (する, 8–10 points): IB IL 24 DO16-R

Compressor KM1, KM2 (星), KM3 (delta), condenser fan 1, condenser fan 2, water pump, 4-way valve, 警報出力, defrost valve (オプション)

4. 制御ロジック (directly programmable in PLC)
5. Start conditions

No alarms for high pressure / low pressure / oil pressure differential / 水の流れ / 相順 / 非常停止

Valid start command received

2. Mode control

冷却: 4-way valve de-energized

加熱: 4-way valve energized

自動: auto-switching based on water temperature

3. 順序 (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. 保護 (immediate shutdown)

High pressure, low pressure, oil pressure differential, loss of water flow, phase sequence error, 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量, protection logic, mode switching

ラダー図 (LD) / 機能ブロック図 (FBD) programming in PC Worx, consistent with standard water chiller/heat pump program structure

⚠️ Important notes

60Hz: 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

認証: 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

安定した, 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)

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

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

7. Short answer

はい.

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, 水の流れ, 相順, 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, 過負荷) ✅

Supports Modbus remote monitoring ✅

要するに:

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

Can the original PC4001 be programmed directly?

いいえ.

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:

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

To program the on-board PC4001 panel directly:

いいえ, it is not a programmable logic controller.