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  5. Features for PCU-SL Series


Features for PCU-SL Series

Fastest response in the industry combined with ultrahigh-precision temperature regulation

The industry's first chiller with IOF sensing has dramatically improved follow-up performance.
Ultra-fast response and pinpoint precision meets any change in operating conditions.

いままでにない安定した水温管理を

IOF sensing

“Industry's fastest response and ultrahigh-precision mean stable operation.”

The IOF sensor achieves unequaled circulated water temperature stability by constantly monitoring inlet temperature, outlet temperature, and flow rate, and responding to changes in load and flow-rate generated by production processes faster and more accurately than other chillers.

IOF sensing achieves superb follow-up response

The IOF sensor achieves unequaled circulated water temperature stability by constantly monitoring inlet temperature, outlet temperature, and flow rate, and responding to changes in load and flow-rate generated by production processes faster and more accurately than other chillers.

PCU-SL Series

Maintains stable circulated water temperature by quickly responding to changes in load and flow-rate.

PCU-SL Series

Typical chiller

Circulated water temperature varies widely and the chiller takes longer to respond to changes in load and flow-rate.

Typical chiller

Ultra-precise ±0.1℃

"Chillers are used in all kinds of situations, and that means there are also all kinds of usage conditions for flow-rate, load, and other factors.
Unlike other chillers, PCU-SL Series chillers constantly monitor and control inlet temperature, outlet temperature, and flow-rate. This keeps all criteria within operating specifications and achieves pinpoint-accurate temperatures of ±0.1ºC."

PCU-SL Series

Monitoring flow-rate in addition to circulated water temperature achieves optimal control.

PCU-SLシリーズの場合

Typical chiller

Circulated water temperature widely fluctuates because flow rate is not monitored and temperature is controlled only by temperature difference. (*Under low-flow rate, low-load conditions)

Typical chiller

Constant cooling capacity

Air-cooling type

“Lambda airflow design achieves consistent performance”

A lambda airflow design featuring circulation routes on multiple sides of the top of the unit both maximizes condensation area and, unlike past chillers, distributes airflow evenly between the top and bottom of the unit.
The design also maintains performance even under high temperature and clogged filter conditions.

熱・粉塵対策

High-temperature conditions

Excellent cooling performance even when outdoor air is an exceptionally hot 45°C.

High-temperature conditions

Clogged filter

Even when the filter screen rate is 80%, cooling capacity stays at 75%.

Clogged filter

Water-cooling type

“Tower condenser achieves consistent performance”

High-performance tower condenser controls coolant pooling.
A 90% effective capacity that maintains cooling water performance even under high-temperature, low-flow conditions makes this tower condenser the best in its class.

クラス最高 有効容積90%

When cooling water high temperature

It demonstrates a high cooling capacity even at a high temperature of 45°C cooling water.

When cooling water high temperature

When cooling water low flow amount

It maintains 96% of the cooling capacity even at a low flow rate of 15L / min of the cooling water.

When cooling water low flow amount

Double-crank structure

“The industry's most durable structure means superb reliability.”

A main frame with a double-crank structure ensures stable operation not only when shipping within Japan but also when doing long-distance shipping to overseas destinations.

振動対策 雨・水対策 先進の配管シミュレーション

Double-crank structure clears maximum acceleration of 1.92G

A structural design focused on meeting the US Department of Defense military standards (MIL) achieves an exceptionally robust structure capable of withstanding vibrations up to 1.92G.
The chiller can also be relied on in settings where extreme vibrations are the norm, such as long distance overseas transport.

Double-crank structure

clears maximum acceleration of 1.92G

Bottom-top separator design meets IP-x4 water resistance standards

When used outside, the PCU-SU Series bottom-top separator structure protects electrical components and other parts from the elements.
The design achieves exceptional waterproof performance that exceed the demanding criteria of the JIS IP-x4 testing standard.

Three-valve control / Wide-range

“Three-valve control enables a wide-range of applications.”

In addition to a main valve, PCU-SL Series chillers have a cooling valve for controlling low-temperature refrigerant and a heating valve for controlling exhaust heat that make them compatible with a wide-range of usage conditions.

heating valve, cooling valve, main valve

A wide range spanning -5℃ to 45℃

A triple-valve control achieves flexibility for meeting every type of chiller application. One of the triple-valve’s most impressive features is its ability to lower the temperature of coolant circulating back to the compressor by bypassing low-temperature coolant. While the condensers in older model chillers stop running when they take in coolant at high temperatures, the triple-valve control makes it possible to run the chiller with circulating water at very high temperatures above 45ºC, as well as at very low temperatures below -5ºC. Additionally, a heating valve that releases heat after heat exchange achieves heat-less operation that reduces a common source of breakdowns and also saves energy.

Inverter control

“Newly developed energy-efficient inverter”

The compressor, fan motor, and pump are all controlled with a newly developed inverter.
Cooling constantly and optimally synchronized with load achieves up to 50% energy savings.
* Fan motor applies to air-cooling type only.

Up to 50% energy conservation

Maintains compressor, fan motor, and pump RPM at optimal rate.

Flexible operation control

A typical chiller controls operation according to the specified pump RPM rate. But PCU-SL Series chillers control operation with the help of additional new parameters:“ circulated water pressure” and “circulated water volume”.

Flexible yet user-friendly

Interface & Monitor Display

"The compressor, fan motor, and pump are all controlled with a newly developed inverter.
Cooling constantly and optimally synchronized with load achieves up to 50% energy savings."

  • External output

    • Operation stop output
    • Error output
    • Pump output
    • Circulated water temperature upper-limit output
    • Circulated water temperature lower-limit output
  • External input

    • Operation stop input
    • Error reset input
    • Emergency stop input
  • External communication

    • Ethernet (10BASE-T/100BASE-TX)
    • Communication protocol (Socket, MC protocol)
  • Timer functions

    • On timer function
    • Off timer function
  • Operation time monitor

    • Compressor operation time
    • Fan operation time
    • Pump operation time
  • Guidance and help functions

    • Settings menu guidance function
    • Troubleshooting help function
  • Key lock/password settings

Excellent PLC compatibility

PLC link

MC protocol drastically reduces program preparation and debugging workload. Get the system up and running in less time and at less cost than ever before.
* MC protocol is an abbreviation for Melsec communication protocol.

MC protocol communication

Example: For changing the circulating water temperature setting.

Item Typical chiller PCU-SL Series
Communication method SOCKET communication MC protocol communication
Ladder programming

Compared with SOCKET communication, ladder programming is 1/7 easier.

1/7

Enter command

No need to enter cumbersome commands.

No need