-
Tel : +86-592-6382791
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Email : sales@pidmaxwell.com
Tel : +86-592-6382791
Email : sales@pidmaxwell.com
The Maxwell TC-200S Series is an industrial-grade, three-phase intelligent SCR (Silicon Controlled Rectifier) power regulator designed for precise, stepless control of resistive heating loads in demanding industrial environments. Manufactured by Maxwell Automation Technology Co., Ltd. under the PIDMaxWell brand, the TC-200S combines a fully digital control architecture with an integrated dual-row LED display, multi-function indicator LEDs, and a front-panel keypad, enabling operators to monitor process parameters and adjust output settings directly without external programming tools.
The regulator accepts a wide range of analogue control input signals — including 4–20 mA, 0–20 mA, 0–5 VDC, 0–10 VDC, 1–5 VDC, and 2–10 VDC — and features automatic phase detection, making it straightforward to integrate into new or existing control systems. An integrated soft-start (ramp) function eliminates inrush current surges at power-on, protecting both the SCR modules and the connected heating elements from thermal shock. When the heat-sink temperature exceeds the user-defined alarm threshold (AL1), the unit automatically reduces output power to a configurable safe level (EOP), maintaining process continuity while safeguarding the internal SCR modules from thermal damage.
An optional RS-485 communication interface with Modbus-RTU protocol enables seamless integration into SCADA systems, PLCs, DCS, and industrial IoT networks. The TC-200S supports auto/manual bumpless transfer, run/stop control, and configurable minimum and maximum output limits, providing the flexibility required for a wide range of industrial heating and process control applications. Rated current options of 100 A, 125 A, 150 A, 175 A, 200 A, and 225 A cover load capacities from 48 kW to 190 kW (three-phase), making the TC-200S suitable for small laboratory ovens through to large industrial electric furnaces.
Brand:
PIDMaxWellItem no.:
TC-200SPayment:
T.T, Credit Card, Paypal etc, to be negotiateMarket price:
$500Price:
$450Product origin:
Made in ChinaMin order:
10 PCSProduct weight:
5.8kgKey Features
|
Feature |
Description |
|
Three-Phase Power Regulation with Auto Phase Detection |
Automatically detects phase-loss conditions and triggers the AL1 alarm, preventing equipment damage due to single-phasing. Phase-loss status is indicated by dedicated L1, L2, and L3 LEDs. |
| Soft-Start (Ramp) Protection | The built-in soft-start function (BUF parameter, range 0.0–100.0) gradually ramps output from the minimum level (OPL) to the maximum level (OPH) at power-on, eliminating inrush current spikes that damage heating elements, fuses, and SCR modules. |
| Over-Temperature Alarm & Output Protection | When the heat-sink temperature exceeds the AL1 threshold, the output is automatically constrained to the EOP (Emergency Output Protection) value. This reduces power to a safe level rather than performing a hard shutdown, maintaining process continuity while protecting the SCR modules. |
| Dual-Row LED Display with Multi-Function Indicators | The integrated 4-digit dual-row LED display simultaneously shows the heat-sink temperature (°C, upper row) and the current output power ratio (%, lower row). Seven LED indicators provide real-time status: PWR (power on), AL1 (over-temperature/phase-loss alarm), L1/L2/L3 (per-phase fault), COM (RS-485 communication activity), and OUT (output status). |
| Configurable Min/Max Output Limits via Front-Panel Keys | Operators can set the minimum output (OPL) and maximum output (OPH) limits directly from the front panel using the SET, ◄, ▼, and ▲ keys, constraining the SCR output within a defined operating range regardless of |
| Auto/Manual Bumpless Transfer | Seamless switching between automatic (analogue input) control and manual control without output bumps or disturbances, ensuring process stability during mode transitions. |
| Run/Stop Function | A dedicated run/stop control function (rUN parameter) allows the SCR output to be enabled or disabled via the front panel or RS-485 command, providing a safe and convenient way to halt output without removing power |
| RS-485 / Modbus-RTU Communication (Optional) | The optional RS-485 interface with Modbus-RTU protocol supports remote monitoring, parameter adjustment, and data logging. Up to 128 devices can be addressed on a single RS-485 bus. Communication speeds of 2.4, 4.8, 9.6, and 19.2 kbps are selectable. |
| Alarm Relay Output (Standard) | A standard relay output (NO + NC contacts) is provided for alarm signalling, enabling integration with external alarm systems, PLCs, or safety circuits without additional modules. |
| Multiple-Unit Parallel/Series Wiring | Up to 4 TC-200S units can be connected in parallel with a single master unit providing the analogue input signal, with all units' output ratios adjustable simultaneously. Serial connection of 2 units controlled by the same signal is |
| Integrated Temperature-Controlled Cooling Fan | The built-in fan activates automatically when the heat-sink temperature reaches ≥60 °C, providing active cooling to maintain continuous operation in high-ambient-temperature environments. An external fan interface is also available for additional cooling capacity. |
Technical Specifications
General Specifications
| Parameter | Value / Description |
| Brand / Series | PIDMaxWell / TC-200S Series |
| Product Type | Three-phase intelligent SCR (thyristor) power regulator |
| Load Compatibility | Resistive load only (purely resistive) |
| Rated Load Voltage | Three-phase 200–440 VAC (±15%), 50/60 Hz |
| Rated Current Options | 100 A / 125 A / 150 A / 175 A / 200 A / 225 A |
| Auxiliary Power Supply | 85–265 VAC, 50/60 Hz (standard) | 12–24 VDC (optional, code D) |
| Control Input Signal | 4–20 mA, 0–20 mA, 0–5 VDC, 0–10 VDC, 1–5 VDC, 2–10 VDC |
| Control Mode | Phase-angle firing; Zero-crossing (burst) firing |
| Display | Dual-row 4-digit LED: upper row = heat-sink temperature (°C); lower row = output power ratio (%) |
| Alarm Relay Output | 1 × relay output (NO + NC contacts), standard feature |
| Communication Interface | RS-485, Modbus-RTU protocol (optional, code M); baud rates: 2.4 / 4.8 / 9.6 / 19.2 kbps |
| RS-485 Device Address | Range: 0–127 (UAD parameter) |
| Soft-Start Function | Built-in; BUF parameter range 0.0–100.0 (BUF=0: 10 s ramp; BUF=100: disabled) |
| Over-Temperature Protection | AL1 threshold configurable; output constrained to EOP value when alarm triggered |
| Min/Max Output Limits | OPL (minimum output) and OPH (maximum output) independently configurable |
| Auto/Manual Transfer | Bumpless auto/manual control switching (AUt0 parameter) |
| Run/Stop Function | Configurable via rUN parameter; controllable via front panel or RS-485 |
| Cooling System | Integrated temperature-controlled fan (activates at heat-sink temp ≥60 °C) |
| Operating Frequency | 50 Hz or 60 Hz (Hz parameter selectable) |
| Ambient Temperature | Must be < 50 °C; additional cabinet fans required if ambient > 60 °C |
| Minimum Load Current | ≥ 0.5 A (SCR will not operate correctly below this threshold) |
| Fuse Protection | Fast-blow (semiconductor) fuses required in system to protect SCR modules |
| Mounting | Panel mounting (screw fixing) |
Model Selection & Load Capacity
| Item Number | Rated Current | Load Capacity (220V Star, 3-phase) | Load Capacity (380V Delta, 3-phase) |
| TC-200S-2-4-100-N-A03 | 100 A | 48 kW | 90 kW |
| TC-200S-2-4-125-N-A03 | 125 A | 57 kW | 101 kW |
| TC-200S-2-4-150-N-A03 | 150 A | 68 kW | 118 kW |
| TC-200S-2-4-175-N-A03 | 175 A | 78 kW | 136 kW |
| TC-200S-2-4-200-N-A03 | 200 A | 90 kW | 150 kW |
| TC-200S-2-4-225-N-A03 | 225 A | 105 kW | 190 kW |
Mechanical Dimensions (Unit: mm)
| Item Number | A | B | C | D | E | F | G |
| TC-200S-2-4-100-N-A03 | 210 | 150 | 160 | 255 | 132 | 206 | —— |
| TC-200S-2-4-125-N-A03 | 250 | 150 | 200 | 295 | 132 | 206 | —— |
| TC-200S-2-4-150-N-A03 | 250 | 150 | 200 | 295 | 132 | 206 | —— |
| TC-200S-2-4-175-N-A03 | 300 | 150 | 250 | 345 | 132 | 206 | 50 |
| TC-200S-2-4-200-N-A03 | 300 | 150 | 250 | 345 | 132 | 206 | 50 |
| TC-200S-2-4-225-N-A03 | 430 | 150 | 380 | 470 | 132 | 230 | 190 |
Why Choose Maxwell?
Maxwell Automation (Xiamen) Limited is a leading manufacturer and exporter of industrial automation and temperature measurement products, headquartered in Xiamen, Fujian Province, China. The NTC10K series is manufactured under strict quality control procedures, with 100% resistance testing at 25 °C and batch B-value verification to ensure consistent performance across production lots.
OEM/ODM Customisation: Custom probe dimensions, thread types, wire lengths, connector types, and private-label packaging are available for volume orders.
High-Volume Production Capacity: Monthly production capacity of over 100,000 units, with standard lead times of 10–15 working days for custom configurations.
100% Electrical Testing: Every sensor is tested for R25 resistance and continuity before shipment, with optional B-value verification available.
Competitive Factory Pricing: Direct factory pricing with no intermediary mark-up. Volume discounts available for orders above 1,000 units.
Global Logistics Support: Worldwide shipping via DHL, FedEx, UPS, and ocean freight. Samples available for evaluation before bulk order placement.
Contact Information
| Channel | Details |
| sales@pidmaxwell.com | |
| Tel / WhatsApp | +86 13779929138 |
| Phone (Office) | +86-592-6382791 |
| Website | www.maxwell-fa.com |
Connection diagram
Size and Dimension
Panel Description
Wiring instruction for input on differnet functions
The TC-200S ordering code is structured as five sequential fields separated by hyphens, following the prefix 'TC-200S'. Each field defines a specific attribute of the unit. The standard product number starts with TC200S-125A for the 125 A model with 85–265 VAC auxiliary supply.
TC-200S – [1] – [2] – [3] – [4] – [5]
| Field | Description | Code | Meaning |
| [1] | Power supply for the unit itself | 2 ，D | 85–265 VAC, 50/60 Hz 12–24 VDC |
| [2] | Load voltage | 2 ，4 | 3-phase 200–240 V (+/−15%) 3-phase 380–440 V (+/−15%) |
| [3] | Rated load current | 100 / 125 / 150 ，175 / 200 / 225 | 100 A / 125 A / 150 A 175 A / 200 A / 225 A |
| [4] | Communication | N ，M | Without communication With RS-485 Modbus-RTU |
| [5] | Input signal configuration | A03 / A02 ，V08 / V09 ，V03 / V04 | 4–20 mA / 0–20 mA ，1–5 VDC / 2–10 VDC ，0–5 VDC / 0–10 VDC |
Ordering Examples
| Order Code | Configuration Summary |
| TC-200S-2-4-125-N-A03 | Aux supply: 85–265 VAC | Load: 3-phase 380–440 V | 125 A | No RS-485 | Input: 4–20 mA |
| TC-200S-2-4-125-M-A03 | Aux supply: 85–265 VAC | Load: 3-phase 380–440 V | 125 A | RS-485 Modbus-RTU | Input: 4–20 mA |
| TC-200S-2-4-150-M-V09 | Aux supply: 85–265 VAC | Load: 3-phase 380–440 V | 150 A | RS-485 Modbus-RTU | Input: 2–10 VDC |
| TC-200S-2-2-100-N-V04 | Aux supply: 85–265 VAC | Load: 3-phase 200–240 V | 100 A | No RS-485 | Input: 0–10 VDC |
| TC-200S-2-4-175-M-A03 | Aux supply: 85–265 VAC | Load: 3-phase 380–440 V | 175 A | RS-485 Modbus-RTU | Input: 4–20 mA |
| TC-200S-D-4-200-M-V08 | Aux supply: 12–24 VDC | Load: 3-phase 380–440 V | 200 A | RS-485 Modbus-RTU | Input: 1–5 VDC |
Click below link to download catalog and user manual, RS-485 modbus registry table
Potential Applications
The TC-200S three-phase SCR power regulator is engineered for any industrial process that requires precise, stepless, and reliable control of resistive heating loads. Its combination of high current capacity (up to 225 A), multiple input signal options, comprehensive protection functions, and optional Modbus-RTU communication makes it suitable across a broad range of industries and applications.
| Application Sector | Details |
| Industrial Electric Furnaces & Heating Furnaces | Metal heat treatment (annealing, hardening, tempering, normalising), ceramic sintering, glass melting, and vacuum furnace temperature control. The high current ratings and phase-angle firing mode enable smooth, precise temperature ramp control in demanding furnace applications. |
| Oven & Drying Equipment | Industrial drying ovens for food processing, chemical drying, wood drying, and textile curing. The zero-crossing firing mode reduces EMI interference in sensitive production environments, while the OPL/OPH limits prevent over-drying or under-drying of products. |
| Injection Moulding Machine & Extruder Temperature Control | Precise control of barrel heater bands and nozzle heaters on plastic injection moulding machines and extruders. The soft-start function protects heating elements from thermal shock, extending service life and improving plasticising quality and production efficiency. |
| Laboratory & Scientific Research Equipment | Constant-temperature water baths, heating mantles, environmental test chambers, and reactor temperature control systems. The RS-485 Modbus interface allows integration with laboratory automation and data acquisition systems. |
| Pipeline Heat Tracing & Tank Insulation | Electric heat tracing for pipeline freeze protection and process temperature maintenance in the petroleum, chemical, and water treatment industries. The adjustable OPL/OPH output limits allow precise control of trace heating power to maintain target pipe temperatures. |
| Semiconductor & Electronics Manufacturing | Reflow ovens, wave soldering machines, and thermal bonding equipment where precise, repeatable temperature profiles are critical to product quality and yield. |
| Textile & Dyeing Industry | Dyeing vat temperature control, heat-setting machines, and fabric drying lines requiring stable, programmable temperature profiles across multiple heating zones. |
| New Energy & Power Industry | Battery formation and testing equipment, fuel cell test systems, and power electronics thermal management applications where stable, controllable power delivery is essential. |
| Food & Beverage Processing | Pasteurisation equipment, cooking vats, chocolate tempering machines, and industrial baking ovens where precise temperature control directly affects product safety and quality. |
| Plastics & Rubber Processing | Vulcanisation presses, hot-press moulding machines, and thermoforming equipment requiring precise and stable temperature control of heating platens and moulds. |
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Address : NO.201 Binhuyili, HaiCang district, XiaMen,FuJian, China 361026
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Email : sales@pidmaxwell.com
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