Cold Room Monitoring With PLC HMI and Cloud Alarms

24/7 visibility of room temperature, plant status and door events — Siemens PLC, colour HMI, SMS/email escalation. Built for industrial stores and GMP-oriented pharma rooms, not a consumer fridge app.

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Electrical Control

Three Layers Owners Actually Audit

Cold room monitoring for a professional buyer is a control stack: a PLC cabinet in the plant room, an HMI the operators can use without opening the compressor enclosure, and a cloud gateway that sends SMS and email when a set-point is missed. Howcool publishes all three as catalogue products and installs them on EPC jobs — the homepage describes a real-time monitoring centre tracking temperature, humidity and equipment status.

The solutions page already promises 24/7 remote support after handover. The remote-monitoring product is the hardware/software path that makes that support concrete: a gateway on Ethernet or 4G LTE, a browser dashboard, and an optional Howcool watchdog if the first recipient does not acknowledge.

Brands on the cabinet page are Siemens, Schneider Electric and CHINT. HMI brands listed are Weintek, Schneider Magelis and Siemens KTP. That is the published bill of materials — not a generic “smart sensor” claim.

Howcool integrated PLC control cabinet

Live Control Products

Open the product pages for full spec sheets. Figures below are the published rows.

Integrated PLC Control Cabinet
PLC

Integrated PLC Control Cabinet

Siemens S7-200 SMART (S7-1200 option), Schneider TeSys, CHINT breakers, Modbus TCP / Ethernet / RS-485, IP54 / IP65.

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HMI Touchscreen Operator Station
HMI

HMI Touchscreen Operator Station

7–15 inch colour; up to 16 zones; 30-day 1-minute log with USB export; eight languages including Arabic RTL.

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Remote Monitoring and Alarm
Cloud

Remote Monitoring and Alarm

Ethernet + 4G LTE; SMS in 30 seconds to five recipients; 5-year tamper-evident retention; iOS/Android.

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Published specValue
PLC defaultSiemens SIMATIC S7-200 SMART
Power380V / 50Hz / 3-phase, neutral + earth (cabinet page)
HMI sizes7 / 10 / 12 / 15 inch
HMI IPIP65 front / IP20 rear
Cloud sample rate1 minute, configurable to 10 seconds
Alarm pathSMS within 30 seconds, email backup, escalation

Optional cloud service fees appear on the product record; they are quoted with the project rather than restated as a public tariff here.

Where Monitoring Is Specified

Pharma 4Q rooms, port logistics (Tianjin Port lists remote monitoring on the project card), and any export hall where Howcool’s 24/7 support is in the contract. Pair with the pharmaceutical cold room page when validation logs are in scope.

Related

Pharmaceutical Cold Room

4Q validation support and PLC logging for GMP-oriented storage.

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Related

Wuhan Xinpu Logistics

PLC building control, 400+ sensors cited on the project record.

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Monitoring Procurement Questions

What hardware is on the live electrical-control pages?
Three catalogue products: Integrated PLC Control Cabinet (Siemens SIMATIC S7-200 SMART default, S7-1200 option; Schneider Electric TeSys contactors; CHINT breakers; Modbus TCP / Ethernet / RS-485; 380V/50Hz 3-phase), HMI Operator Station (7 / 10 / 12 / 15 inch colour; Weintek, Schneider Magelis or Siemens KTP), and Remote Monitoring & SMS/Email Alarm (Ethernet + 4G LTE).
How fast are alarms, and who receives them?
The remote-monitoring product states SMS within 30 seconds to up to five recipients with escalation, plus email backup. Howcool’s after-sales team can be added as a 24/7 watchdog recipient. Wuhan Xinpu’s project record cites PLC monitoring of 400+ sensors — that is a site example, not a universal sensor count.
Does monitoring make Howcool HACCP or GDP certified?
No. The HMI and cloud products describe HACCP/GDP-ready audit trails and 5-year tamper-evident data retention as software features. Howcool’s published company certificates remain ISO 9001:2015, ISO/IEC 27001:2013, CE and Ministry of Commerce export authorisation.
Can we view multiple sites?
The remote-monitoring spec lists a multi-site dashboard, iOS and Android apps, and any modern browser with no plug-in. Connectivity is Ethernet with 4G LTE cellular backup.
What should we send to specify a cabinet?
Compressor count, evaporator zones, door interlocks, language for the HMI (the station is pre-configured in EN/ZH/RU/AR/ES/FR/PT/ID) and whether cloud watchdog is in scope. Cabinets are custom-engineered; IP54 painted steel is default, IP65 stainless is listed as an option.

Specify a Monitoring Stack

Send compressor count, zone list and whether SMS watchdog should include Howcool after-sales.

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[email protected] · +86 188-1022-1993 · Beijing Howcool Refrigeration Technology Co., Ltd.