1. Product Overview

Product Name: General Purpose M2.5 Screw Terminal Panel
Model: DTP‑4C
Series: E‑Series Analog I/O Accessories
Article Number: DTP‑4C
Manufacturer: CONTEC Co., Ltd. (Japan)
Product Category: Industrial Automation – Measurement and Control Accessories
Product Type: Screw Terminal Panel for Analog/Digital I/O Boards
Intended Use: External connection interface for CONTEC analog and digital I/O boards using D‑SUB 37‑pin connectors

The CONTEC DTP‑4C is a general‑purpose terminal panel designed to simplify wiring between CONTEC’s analog and digital I/O interface boards and external devices. It provides a robust, clearly labeled screw‑type terminal interface for secure signal termination in laboratory, industrial, and embedded measurement systems.

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2. Key Features

- General‑Purpose Terminal Panel: Designed for versatile use with a wide range of CONTEC analog and digital I/O boards.
- Screw‑Type Terminals: Equipped with M2.5 screw clamp terminals for secure and reliable wire connections.
- High‑Density Layout: Features 4 blocks of 10 screw terminals (total 40 terminals) arranged for efficient wiring and clear signal identification.
- Standardized Connector Interface: Integrates a 37‑pin female D‑SUB connector (D‑SUB 37F) for direct connection to CONTEC I/O boards or extension cables.
- Compact Form Factor: Compact 160 mm × 82 mm panel size suitable for control panels, DIN‑rail mounting (with optional adapter), or bench setups.
- Compatibility: Fully compatible with CONTEC’s E‑Series, F‑Series, and L‑Series analog/digital I/O boards that use 37‑pin D‑SUB connectors.
- Ease of Maintenance: Screw terminals allow easy re‑termination and inspection without special tools.
- Industrial‑Grade Construction: Built for durability and long‑term stability in industrial measurement and control environments.
- Signal Integrity: Provides short, shielded connection paths between the I/O board and external sensors or actuators, minimizing noise pickup.
- Accessory Integration: Designed to work seamlessly with CONTEC cables such as PCA37P, PCA37PS, PCB37P, and PCB37PS.

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3. Technical Specifications

| Parameter | Specification |
|----------------|------------------|
| Model | DTP‑4C |
| Terminal Type | Screw clamp terminal blocks |
| Screw Size | M2.5 |
| Number of Terminals | 4 × 10 = 40 screw terminals |
| Connector Type | 37‑pin female D‑SUB (D‑SUB 37F) |
| Compatible Cable | PCA37P, PCA37PS, PCB37P, PCB37PS (37‑pin D‑SUB to D‑SUB or open‑end cables) |
| Dimensions (W × D) | 160 mm × 82 mm |
| Mounting | Panel mount or DIN‑rail mount (with optional DIN‑ADP1 adapter) |
| Material | Rigid insulating base with metal D‑SUB connector housing |
| Terminal Pitch | 10 mm (typical) |
| Wire Size Range | AWG 22 – AWG 16 (0.3 – 1.5 mm²) |
| Insulation Resistance | ≥ 100 MΩ at 500 VDC (typical for CONTEC terminal panels) |
| Dielectric Strength | 500 VAC for 1 minute between terminals and ground |
| Operating Temperature | 0 °C – 50 °C |
| Storage Temperature | −20 °C – 60 °C |
| Relative Humidity | 10 – 90 % RH (non‑condensing) |
| Weight | Approx. 200 g |
| Color | Light gray panel with black terminal blocks |
| Compliance | RoHS compliant, CE mark (when used with certified CONTEC boards) |

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4. Functionality

The DTP‑4C serves as an external wiring interface between CONTEC measurement/control boards and field devices. The 37‑pin D‑SUB connector mates directly with the I/O board or with a shielded cable. Each pin is routed to a corresponding screw terminal, allowing easy connection of sensors, transducers, actuators, or other external circuits.

Typical Use Cases:
- Analog signal input/output wiring for E‑Series or F‑Series boards (e.g., AD12‑16(PCI)E, AD16‑16U(PCI)EH).
- Digital I/O signal termination for PIO‑ or PI‑series boards.
- Counter or encoder signal connection for CNT‑series boards.
- Laboratory test setups requiring quick reconfiguration of wiring.
- Industrial control panels where secure screw‑type terminations are required.

Applications:
- Data acquisition systems
- Process monitoring and control
- Laboratory instrumentation
- Automated test equipment (ATE)
- Educational and research setups

Compatibility:
- Fully compatible with CONTEC’s 37‑pin D‑SUB I/O boards, including:
- Analog I/O: AD12‑16(PCI)E, AD16‑16U(PCI)EH, ADI12‑16(PCI), ADI16‑4C(PCI), ADI16‑4L(PCI)
- Digital I/O: PIO‑16/16L(PCI), PIO‑32/32L(PCI), PIO‑32/32F(PCI)
- Counter/Motor Control: CNT24‑4(PCI), SMC‑2P(PCI), SMC‑4P(PCI)
- Connects via standard CONTEC 37‑pin cables (PCA37P/PS or PCB37P/PS).

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5. Components & Accessories

Included Items:
- DTP‑4C terminal panel assembly
- Integrated 37‑pin female D‑SUB connector
- Pre‑attached 1 m shielded cable (in some configurations)
- Mounting holes for panel or DIN‑rail installation

Optional Accessories:
- Cables:
- PCA37P‑1.5 (1.5 m flat cable)
- PCA37PS‑1.5P (1.5 m shielded cable)
- PCB37P‑1.5 (1.5 m flat cable)
- PCB37PS‑1.5P (1.5 m shielded cable)
- Connectors: CN5‑D37M (37‑pin male D‑SUB connector set, 5 pcs)
- DIN‑Rail Adapter: DIN‑ADP1 for mounting terminal panels on 35 mm DIN rails
- Companion Terminal Units: EPD‑37, EPD‑96, ATP‑16 (BNC panel), FTP‑15 (15‑pin terminal)

Compatible Boards and Cables (Examples):
- E‑Series Boards: AD12‑16(PCI)E, AD16‑16(PCI)E, AD16‑16U(PCI)EH
- F‑Series Boards: ADA16‑32/2(PCI)F, ADA16‑8/2(LPCI)L
- L‑Series Boards: AD16‑16(LPCI)L, DA16‑4(LPCI)L
- Cables: PCA37P, PCA37PS, PCB37P, PCB37PS

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6. Installation & Setup

Requirements:
- Compatible CONTEC I/O board with 37‑pin D‑SUB connector
- Appropriate shielded or flat cable (sold separately)
- Mounting surface or DIN‑rail adapter

Installation Steps:
1. Mounting:
- Secure the DTP‑4C to a panel or DIN‑rail using the provided holes or optional DIN‑ADP1 adapter.
2. Connection to I/O Board:
- Connect the 37‑pin D‑SUB cable from the I/O board to the DTP‑4C connector.
- Ensure the connector is firmly seated and secured with screws.
3. Wiring External Devices:
- Strip wire ends (approx. 5 mm) and insert into the M2.5 screw terminals.
- Tighten screws to recommended torque (0.3 – 0.4 N·m).
- Verify correct pin‑to‑terminal mapping using the board’s pin assignment chart.
4. Grounding:
- Connect shield or ground wires to designated ground terminals to minimize noise.
5. Verification:
- Check continuity and insulation before powering the system.

Configuration:
No software configuration is required for the DTP‑4C itself; signal mapping is determined by the connected I/O board.

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7. Performance & Capabilities

- Signal Handling: Supports analog and digital signals up to ±10 V or TTL levels, depending on the connected board.
- Frequency Response: Suitable for static and low‑frequency signals (DC – 100 kHz typical).
- Contact Resistance: ≤ 20 mΩ per terminal (typical).
- Insulation Resistance: ≥ 100 MΩ at 500 VDC.
- Dielectric Strength: 500 VAC for 1 minute between terminals and ground.
- Mechanical Durability: > 100 cycles of wire insertion/removal without degradation.
- Environmental Resistance: Designed for industrial environments with moderate vibration and temperature variation.
- Limitations: Not intended for high‑voltage (> 50 V) or high‑current (> 1 A) circuits; use appropriate isolation boards for such applications.

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8. Standards & Compliance

- Electrical Safety: Designed in accordance with IEC 61010‑1 for measurement and control equipment.
- EMC Compliance: Meets EN 61326‑1 (when used with compliant CONTEC boards).
- RoHS Directive: Fully compliant with EU RoHS 2 (2011/65/EU) and RoHS 3 (2015/863/EU).
- CE Marking: Applicable when integrated with CE‑certified CONTEC systems.
- Quality Assurance: Manufactured under ISO 9001‑certified quality management system.
- Environmental Standards: Conforms to CONTEC’s Green Product policy for reduced environmental impact.

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9. Additional Information

Warranty:
- Standard 1‑year limited warranty against manufacturing defects.
- Extended warranty options available through CONTEC service agreements.

Support & Maintenance:
- Technical documentation, wiring diagrams, and pin assignments available on CONTEC’s global portal (www.contec.com).
- Free downloadable drivers and utilities for associated I/O boards (Windows and Linux).
- Compatible with CONTEC’s API‑PAC(W32), API‑TOOLs for Windows/Linux, and third‑party environments such as LabVIEW and MATLAB (via VI‑DAQ and ML‑DAQ libraries).

Maintenance Guidelines:
- Periodically inspect screw terminals for tightness and oxidation.
- Clean with dry air or antistatic brush; avoid solvents.
- Replace if mechanical damage or corrosion is observed.

Product Lifecycle & Updates:
- DTP‑4C is part of CONTEC’s long‑term support accessory line, ensuring availability for industrial system maintenance.
- Successor or equivalent models may include enhanced insulation or modular terminal options.

Ordering Information:
| Model | Description | Connector | Dimensions (mm) |
|------------|----------------|----------------|--------------------|
| DTP‑4C | General Purpose M2.5 Screw Terminal Panel, 4 × 10 screw blocks | 37‑pin D‑SUB female | 160 × 82 |

Related Products:
- DTP‑3(PC): 37‑pin screw terminal panel with attached 1 m cable.
- EPD‑37: DIN‑rail mountable 37‑pin terminal unit.
- ATP‑16: BNC terminal panel for analog I/O.
- DIN‑ADP1: DIN‑rail adapter for terminal panels.

Manufacturer Contact:
CONTEC Co., Ltd.
Measurement and Control Products Division
Global Portal: [www.contec.com](https://www.contec.com)

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### Summary

The CONTEC DTP‑4C is a compact, industrial‑grade screw terminal panel designed to provide a reliable and organized wiring interface for CONTEC’s analog and digital I/O boards. With its M2.5 screw terminals, 37‑pin D‑SUB connector, and robust 160 × 82 mm construction, it ensures secure signal termination and easy maintenance in measurement, control, and automation systems. The DTP‑4C supports a wide range of CONTEC boards across the E‑, F‑, and L‑series product families, making it a versatile accessory for engineers and system integrators seeking dependable connectivity solutions in PC‑based data acquisition and control environments.