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Product Introduction
The Yokogawa TAS40 Terminal Block is a robust and reliable signal termination module designed for industrial automation systems, specifically tailored for integration with Yokogawa’s CENTUM VP, ProSafe-RS, and STARDOM platforms. It serves as a physical interface between field devices and control system I/O modules, ensuring safe and stable signal connection, transmission, and isolation.
Built with precision engineering, the TAS40 provides a secure wiring environment for both analog and digital signals. The design ensures minimal signal interference and excellent contact reliability, making it suitable for critical process industries. The terminal block features a compact form factor with standardized screw or clamp connections, enabling simplified installation, inspection, and maintenance.
The TAS40’s durable construction and resistance to mechanical and electrical stress make it suitable for harsh industrial environments, including oil refineries, power stations, and chemical plants. Its primary role is to guarantee that electrical signals between field instruments and control systems are accurately transmitted without loss or distortion.
Product Specifications
| Parameter | Description |
|---|---|
| Product Name | Yokogawa TAS40 Terminal Block |
| Manufacturer | Yokogawa Electric Corporation |
| Product Type | I/O Terminal Block |
| Function | Signal connection and termination between field devices and I/O modules |
| Compatible Systems | CENTUM VP, CENTUM CS 3000, ProSafe-RS, STARDOM |
| Connection Type | Screw or spring clamp terminals |
| Number of Terminals | 40 points |
| Supported Signal Types | Analog and digital input/output |
| Insulation Resistance | ≥100 MΩ (at 500 VDC) |
| Dielectric Strength | 1500 VAC for 1 minute between terminals |
| Rated Voltage | 24 VDC nominal (maximum 250 VAC) |
| Rated Current | 2 A per terminal (max.) |
| Material | Flame-retardant polycarbonate and copper alloy contacts |
| Contact Resistance | ≤30 mΩ typical |
| Mounting Method | DIN rail or panel mount |
| Wiring Capacity | 0.5 mm² to 2.5 mm² cables |
| Protection | Built-in noise suppression and transient protection circuits |
| Operating Temperature | -10°C to +60°C |
| Storage Temperature | -25°C to +75°C |
| Humidity | 10%–90% RH, non-condensing |
| Vibration Resistance | 10–55 Hz, amplitude ±0.5 mm |
| Shock Resistance | 10 G, 11 ms duration |
| Certifications | CE, UL, CSA, RoHS compliant |
| Dimensions (W × H × D) | 223 × 55 × 50.8 mm |
| Weight | 0.255 kg |
| Maintenance | Tool-free module replacement, labeling space for wiring identification |
| Additional Features | LED signal indicators (optional), protective cover design |
Product Applications
The Yokogawa TAS40 Terminal Block is used in a wide range of industrial process control applications where signal integrity, reliability, and ease of maintenance are required. Its primary applications include:
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Process Automation Systems – Acts as a reliable connection point between field transmitters, control valves, and DCS I/O modules.
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Safety Instrumented Systems (SIS) – Facilitates safe wiring for safety-critical digital and analog inputs and outputs in ProSafe-RS configurations.
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Power Plants – Used in turbine control, switchgear protection, and signal conditioning applications.
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Oil and Gas Processing – Provides durable signal termination in hazardous areas and offshore environments.
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Water and Wastewater Treatment – Interfaces sensors, level switches, and control panels in SCADA systems.
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Chemical and Petrochemical Industries – Supports control signal wiring for reactors, pumps, and compressors.
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Building Automation Systems – Manages HVAC, lighting, and alarm wiring interfaces.
The TAS40 enhances wiring reliability, reduces field commissioning time, and supports clean and organized panel layouts, making it ideal for both large-scale and modular installations.
Product Advantages
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High Contact Reliability – Gold-plated contacts and precision terminals ensure consistent electrical performance and low contact resistance.
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Compact and Modular Design – Saves panel space and simplifies wiring arrangement for dense control cabinet installations.
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Noise and Surge Protection – Integrated protection circuits minimize electrical noise and prevent transient damage to connected devices.
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Flexible Mounting Options – Supports both DIN rail and direct panel mounting, adapting to various installation environments.
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Easy Maintenance – Terminals are easily accessible, labeled, and replaceable without disturbing adjacent wiring.
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Robust Environmental Resistance – Withstands temperature variations, vibration, and mechanical shock common in industrial environments.
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Safety Compliance – Meets major international electrical and environmental standards for industrial equipment.
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Visual Status Indicators – Optional LED indicators provide visual confirmation of signal presence or wiring errors.
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Long Service Life – Built with premium materials ensuring consistent operation and minimal degradation over time.
FAQ
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What systems are compatible with the TAS40 Terminal Block?
The TAS40 is compatible with Yokogawa CENTUM VP, CENTUM CS 3000, ProSafe-RS, and STARDOM systems. -
How many terminals does the TAS40 provide?
It provides 40 connection points for digital or analog signals. -
What type of signal can the TAS40 handle?
It can handle both analog and digital signals, including 4–20 mA current loops and discrete I/O. -
Does the TAS40 support DIN rail mounting?
Yes, it supports both DIN rail and direct panel mounting options. -
What is the maximum current supported per terminal?
Each terminal can handle up to 2 A of current. -
Is there electrical isolation between terminals?
Yes, each terminal is electrically insulated to prevent cross-interference between channels. -
Does the TAS40 include LED indicators?
An optional version of the TAS40 includes integrated LED status indicators for visual signal verification. -
Can it be used in safety systems?
Yes, it is suitable for use in ProSafe-RS safety instrumented systems where certified signal connections are required. -
What kind of protection features are included?
The TAS40 includes surge suppression and noise filtering to protect connected modules from transient voltage spikes. -
What is the insulation resistance rating of the TAS40?
The insulation resistance is rated at 100 MΩ or higher when tested at 500 VDC.
Related Models from the Same Series
| Model | Description | Type | Terminals | Key Feature |
|---|---|---|---|---|
| TAS20 | Standard Terminal Block | I/O Connection | 20 | Compact wiring solution |
| TAS32 | Medium Capacity Terminal Block | I/O Connection | 32 | Modular and space-saving design |
| TAS60 | High Capacity Terminal Block | I/O Connection | 60 | Large-scale control panel use |
| TAS40L | Terminal Block with LED Indicators | I/O Connection | 40 | Integrated signal LED display |
| TAS40F | Fused Terminal Block | I/O Connection | 40 | Overcurrent protection built-in |
| TAS80 | Double-layer Terminal Block | I/O Connection | 80 | High-density dual-level wiring |
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