Comprehensive Product Summary – CONTEC PO-128L(PCI)H

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### 1. Product Overview

Product Name: Digital Output Board with Optocoupler Isolation for PCI
Model: PO-128L(PCI)H
Series: PCI Bus Opto-Isolated Digital I/O Series
Article Number: PO-128L(PCI)H
Manufacturer: CONTEC Co., Ltd.
Version: Ver.1.12

The CONTEC PO-128L(PCI)H is a high-density, opto-isolated digital output interface board designed for PCI bus systems. It provides 128 channels of open-collector, current-sinking digital outputs with robust electrical isolation and surge protection. The board is engineered for industrial automation, data acquisition, and control applications requiring reliable digital signal output at 12–24 VDC levels. It integrates seamlessly with Windows and Linux environments and supports LabVIEW through dedicated libraries.

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### 2. Key Features

- 128 Opto-Isolated Digital Outputs:
Provides 128 open-collector, current-sinking output channels, each isolated via optocouplers to ensure electrical separation between the PC and external devices.

- High Voltage and Current Ratings:
Each channel supports up to 35 VDC and 100 mA maximum output current, with a total of 2 A per common terminal group.

- Fast Response Time:
Maximum response time of 200 µs per channel, suitable for high-speed control and automation tasks.

- Optocoupler Bus Isolation:
Ensures 250 Vrms isolation between I/O and system, providing excellent noise immunity and protection against ground loops.

- Integrated Protection Circuits:
Each output group includes Zener diodes (RD47FM or equivalent) for surge suppression and overcurrent protection circuits for enhanced reliability.

- Flexible Power Supply:
Supports external power supply voltages from 12 to 24 VDC (±10%), allowing compatibility with a wide range of industrial devices.

- Software Support:
Bundled with CONTEC’s API-PAC(W32) driver library for Windows and Linux, including API-DIO(WDM) and API-DIO(LNX).
Compatible with LabVIEW via DAQfast and VI-DAQ libraries (available free from CONTEC’s website).

- Multi-Board System Capability:
Up to 16 boards can be installed in a single system, each with a unique board ID.

- Universal PCI Bus Compatibility:
Supports 32-bit, 33 MHz PCI bus with universal keying for both 3.3V and 5V slots.

- Compact and Lightweight Design:
Board dimensions of 176.41 mm (L) × 105.68 mm (H) and weight of approximately 215 g.

- Regulatory Compliance:
Certified for VCCI Class A, CE Marking (EMC Directive Class A), and RoHS Directive compliance.

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### 3. Technical Specifications

| Parameter | Specification |
|----------------|------------------|
| Output Type | Optocoupler Isolated Open Collector (Current Sink Type, Negative Logic) |
| Number of Channels | 128 channels (16 channels share a negative common) |
| Rated Voltage | 35 VDC (maximum) |
| Output Current | 100 mA per channel (maximum) |
| Residual Voltage | ≤ 0.5 V (≤ 50 mA load), ≤ 1.0 V (≤ 100 mA load) |
| Response Time | 200 µs (maximum) |
| Surge Protection | Zener diode RD47FM (NEC) or equivalent |
| Isolation Voltage (I/O to System) | 250 Vrms |
| External Power Supply | 12–24 VDC (±10%) |
| Power Consumption | 5 VDC, 700 mA (maximum) |
| Operating Temperature | 0–50°C |
| Operating Humidity | 10–90% RH (non-condensing) |
| Connecting Distance | 50 m typical (depends on wiring environment) |
| PCI Bus Specification | 32-bit, 33 MHz, universal key shapes supported |
| Board Dimensions | 176.41 mm (L) × 105.68 mm (H) |
| Weight | 215 g |
| Standards Compliance | VCCI Class A, CE Marking, RoHS Directive |

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### 4. Functionality

The PO-128L(PCI)H functions as a digital output interface board that allows a PC to control external devices through opto-isolated open-collector outputs. Each output channel can drive current-sinking loads such as relays, LEDs, or TTL-level inputs. The board isolates the PC from external circuits, minimizing electrical noise and protecting against voltage surges.

Typical Applications:
- Industrial automation and process control
- Machine I/O control and monitoring
- Data acquisition and signal output systems
- PLC interfacing and relay control
- LED or indicator control systems
- Integration with LabVIEW-based test benches

Compatibility:
- Operating Systems: Windows (API-DIO(WDM), API-DIO(98/PC)) and Linux (API-DIO(LNX))
- Development Environments: Visual Basic, Visual C++, gcc, LabVIEW
- Hardware: Compatible with standard PCI slots (3.3V/5V)

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### 5. Components & Accessories

Included in Package:
- PO-128L(PCI)H board × 1
- First Step Guide × 1
- Driver Library Disk [API-PAC(W32)] × 1
- Warranty Certificate × 1
- Serial Number Label × 1

Optional Cables:
- Shielded Cable with Two 100-pin Connectors:
PCB100PS-0.5 (0.5 m), PCB100PS-1.5 (1.5 m), PCB100PS-3 (3 m), PCB100PS-5 (5 m)
- Connection Conversion Shield Cable (100P → 96P):
PCB100/96PS-1.5, PCB100/96PS-3, PCB100/96PS-5
- Flat Cable with One 100-pin Connector:
PCA100P-1.5, PCA100P-3, PCA100P-5
- Conversion Cable (100-pin → 37-pin D-SUB × 2):
PCB100WS-1.5, PCB100WS-3, PCB100WS-5

Optional Terminal Units:
- EPD-100A (M3 × 100P)
- EPD-96A / EPD-96 (M3 or M3.5 × 96P)
- DTP-64A (M2.5 × 96P)
- CCB-96 (96-pin → 37-pin × 2)
- CM-64L (Signal Monitor for Digital I/O, 64 bits)
- EPD-37A / EPD-37 (M3 or M3.5 × 37P)
- DTP-3A / DTP-4C (General Purpose Terminals)

Connector Type:
- On-board connectors: HDRA-E100W1LFDT1EC-SL (HONDA equivalent)
- Applicable mating connector: HDRA-E100MA1 (HONDA equivalent)

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### 6. Installation & Setup

Hardware Installation:
1. Power off the PC before installation.
2. Insert the board into an available PCI slot (supports both 3.3V and 5V keyed slots).
3. Secure the board and reconnect power.
4. Up to 16 boards can be installed; assign unique Board IDs using the rotary switch (SW1).

Software Installation:
- Install the API-PAC(W32) driver library before inserting the board.
- Use the “Found New Hardware Wizard” in Windows to complete driver setup.
- For Linux, compile and install the API-DIO(LNX) driver using the provided makefile and configuration scripts.

Configuration:
- Board ID: Set via rotary switch (0–Fh).
- I/O Address: Automatically assigned by the OS (32-byte boundary).
- Interrupts: Not used on this model.
- External Power: Connect 12–24 VDC to the common terminals (P-0/1 to P-E/F).

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### 7. Performance & Capabilities

- Output Drive Capability:
Each channel can sink up to 100 mA at 35 VDC maximum.
Each 16-channel group shares a common terminal with a total current limit of 2 A.

- Response Time:
200 µs maximum, ensuring rapid switching for industrial control.

- Electrical Isolation:
250 Vrms isolation between I/O and system circuits, preventing noise coupling and ground potential differences.

- Protection Features:
- Zener diode surge suppression per channel group
- Overcurrent protection per 8-channel block
- Automatic output reset to OFF state upon PC power-up

- System Scalability:
Supports up to 16 boards per system, providing up to 2048 output channels.

- Reliability:
Designed for continuous industrial operation within 0–50°C and 10–90% RH environments.

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### 8. Standards & Compliance

- Electrical Safety & EMC:
- VCCI Class A (Japan)
- CE Marking (EMC Directive Class A)
- RoHS Directive (Restriction of Hazardous Substances)

- PCI Bus Compliance:
- 32-bit, 33 MHz PCI specification
- Universal keying for 3.3V and 5V slots
- Requires +5V supply from PCI slot (not compatible with +3.3V-only systems)

- Isolation Testing:
Verified at 250 Vrms between I/O and system circuits for one minute without breakdown.

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### 9. Additional Information

Warranty:
Limited three-year warranty covering defects in materials and workmanship.
Excludes damage from misuse, modification, or environmental factors.

Support & Maintenance:
- Technical documentation, driver updates, and sample programs available at [https://www.contec.com/](https://www.contec.com/)
- Free downloadable LabVIEW libraries (DAQfast, VI-DAQ)
- Diagnostic utilities included for hardware verification and troubleshooting.

Maintenance Recommendations:
- Periodically inspect connectors and terminals for dust or corrosion.
- Store in anti-static packaging when not in use.
- Operate within specified environmental conditions to ensure longevity.

Safety Precautions:
- Do not install or remove the board with power applied.
- Avoid exposure to flammable gases or corrosive environments.
- Ensure adequate power supply capacity for all installed boards.

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### Summary

The CONTEC PO-128L(PCI)H is a robust, high-channel-count digital output board engineered for industrial and laboratory automation systems requiring reliable, isolated control of external devices. With 128 opto-isolated open-collector outputs, surge and overcurrent protection, and support for 12–24 VDC operation, it provides a flexible and noise-resistant interface between a PC and field equipment. Its compatibility with Windows, Linux, and LabVIEW environments, combined with comprehensive driver libraries and diagnostic tools, makes it ideal for system integrators, test engineers, and automation developers seeking scalable, high-performance digital output solutions.