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- 32 Opto-Isolated Digital Inputs: Provides 32 independent input channels, each isolated via opto-couplers to protect the host PC from electrical noise and surges.
- Negative Logic Configuration: All 32 inputs share a positive common terminal, supporting current-sinking (negative logic) input devices.
- Wide Input Voltage Range: Accepts 12 V DC to 24 V DC input signals, allowing flexible integration with industrial sensors and switches.
- High Noise Immunity: Opto-coupler isolation ensures stable operation in electrically noisy environments typical of industrial automation systems.
- Interrupt Capability: Supports two interrupt request (IRQ) lines selectable from IRQ 2–7, 9, 12, 14, 15. Interrupts are triggered on the falling edge of input signals.
- High Isolation Voltage: Provides up to 1 kV rms isolation between input circuits and the PC bus, ensuring protection against voltage transients.
- Compact AT Bus Form Factor: Designed for PC/AT bus architecture, compatible with legacy industrial PCs and control systems.
- Standard Connector Interface: Equipped with a 37‑pin D‑SUB female connector for external wiring.
- Robust Construction: Industrial-grade PCB design with high-quality components for long-term reliability.
- Software Support: Compatible with CONTEC’s API‑TOOL driver suite for Windows and Linux, and VI‑DAQ library for LabVIEW integration.
- Negative Logic Configuration: All 32 inputs share a positive common terminal, supporting current-sinking (negative logic) input devices.
- Wide Input Voltage Range: Accepts 12 V DC to 24 V DC input signals, allowing flexible integration with industrial sensors and switches.
- High Noise Immunity: Opto-coupler isolation ensures stable operation in electrically noisy environments typical of industrial automation systems.
- Interrupt Capability: Supports two interrupt request (IRQ) lines selectable from IRQ 2–7, 9, 12, 14, 15. Interrupts are triggered on the falling edge of input signals.
- High Isolation Voltage: Provides up to 1 kV rms isolation between input circuits and the PC bus, ensuring protection against voltage transients.
- Compact AT Bus Form Factor: Designed for PC/AT bus architecture, compatible with legacy industrial PCs and control systems.
- Standard Connector Interface: Equipped with a 37‑pin D‑SUB female connector for external wiring.
- Robust Construction: Industrial-grade PCB design with high-quality components for long-term reliability.
- Software Support: Compatible with CONTEC’s API‑TOOL driver suite for Windows and Linux, and VI‑DAQ library for LabVIEW integration.
1. Product Overview
Product Name: Opto-Isolated 32-Channel Digital Input AT Card
Model: PI-32L(PC)V
Series: PI Series – Digital Input Interface Boards
Article Number: PI-32L(PC)V
Manufacturer: CONTEC Co., Ltd. (Japan)
Product Category: Industrial Automation / Measurement and Control / Digital I/O Interface Boards
The CONTEC PI-32L(PC)V is an opto-isolated 32-channel digital input interface card designed for PC/AT bus systems. It provides reliable, noise-resistant digital input capabilities for industrial control, monitoring, and data acquisition applications. The board features negative logic input configuration, a shared positive common line, and supports 12–24 V DC input levels. It is engineered for robust electrical isolation, high reliability, and compatibility with a wide range of industrial sensors and control devices.
2. Key Features
- 32 Opto-Isolated Digital Inputs: Provides 32 independent input channels, each isolated via opto-couplers to protect the host PC from electrical noise and surges.
- Negative Logic Configuration: All 32 inputs share a positive common terminal, supporting current-sinking (negative logic) input devices.
- Wide Input Voltage Range: Accepts 12 V DC to 24 V DC input signals, allowing flexible integration with industrial sensors and switches.
- High Noise Immunity: Opto-coupler isolation ensures stable operation in electrically noisy environments typical of industrial automation systems.
- Interrupt Capability: Supports two interrupt request (IRQ) lines selectable from IRQ 2–7, 9, 12, 14, 15. Interrupts are triggered on the falling edge of input signals.
- High Isolation Voltage: Provides up to 1 kV rms isolation between input circuits and the PC bus, ensuring protection against voltage transients.
- Compact AT Bus Form Factor: Designed for PC/AT bus architecture, compatible with legacy industrial PCs and control systems.
- Standard Connector Interface: Equipped with a 37‑pin D‑SUB female connector for external wiring.
- Robust Construction: Industrial-grade PCB design with high-quality components for long-term reliability.
- Software Support: Compatible with CONTEC’s API‑TOOL driver suite for Windows and Linux, and VI‑DAQ library for LabVIEW integration.
3. Technical Specifications
| Parameter | Specification |
|----------------|-------------------|
| Input Channels | 32 opto-isolated digital inputs |
| Input Type | Negative logic (current sinking), shared positive common |
| Input Voltage Range | 12 V DC – 24 V DC |
| Input Resistance | 2 kΩ per channel |
| Isolation Voltage | 1 kV rms (input to PC bus) |
| Interrupts | 2 × IRQ selectable from IRQ 2–7, 9, 12, 14, 15 (falling edge trigger) |
| Connector Type | 37‑pin D‑SUB female (DCL‑J37SAF‑20L9 [JAE] or equivalent) |
| Dimensions | 160 mm (L) × 122 mm (H) |
| Bus Interface | PC/AT (ISA) bus |
| Power Supply | +5 V DC from PC bus |
| Power Consumption | Approx. 200 mA (typical) |
| Maximum Wiring Distance | 50 m (recommended) |
| Response Time | ≤ 1 ms typical (optical isolation delay) |
| Operating Temperature | 0 °C – 50 °C (typical industrial environment) |
| Storage Temperature | –10 °C – 60 °C |
| Humidity | 10 % – 90 % RH (non‑condensing) |
| Mounting | Internal PC expansion slot (AT bus) |
| Weight | Approx. 200 g |
4. Functionality
The PI‑32L(PC)V functions as a digital input interface board for PC/AT systems, converting external DC logic signals into TTL‑level signals readable by the host computer. Each input channel is optically isolated from the PC bus, ensuring that electrical noise, surges, or ground potential differences do not affect system stability.
Operation Principle:
- External devices (e.g., sensors, switches, PLC outputs) provide 12–24 V DC signals to the input terminals.
- Each input passes through an opto‑coupler, which converts the electrical signal into an optical signal, isolating the PC circuitry.
- The opto‑coupler output is then converted back to a logic‑level signal for the PC bus interface.
- The board supports interrupt generation on falling edges, allowing event‑driven data acquisition.
Use Cases and Applications:
- Industrial process monitoring and control
- Machine automation and equipment status detection
- PLC and sensor signal acquisition
- Digital signal logging and event counting
- Integration with SCADA and HMI systems
- Laboratory and test automation setups
Compatibility:
- Compatible with PC/AT (ISA) bus architecture.
- Works with CONTEC’s API‑TOOL driver suite for Windows and Linux.
- Supports integration with National Instruments LabVIEW via VI‑DAQ library.
5. Components & Accessories
Included Components:
- PI‑32L(PC)V main board
- User manual and documentation
- Driver software (downloadable from CONTEC website)
Optional Accessories:
- Cables:
- PCA37P / PCB37P (37‑pin D‑SUB cable, 1.5 m)
- PCA37PS / PCB37PS (shielded 37‑pin cable)
- Terminal Blocks:
- EPD‑37A, EPD‑37 (37‑pin screw terminal boards)
- CM‑32(PC)E (terminal module for 32‑point input)
- Connector Sets:
- CN5‑D37M (37‑pin male connector set)
These accessories facilitate easy wiring between the board and external devices such as sensors, switches, and control panels.
6. Installation & Setup
System Requirements:
- IBM PC/AT or compatible system with available ISA expansion slot
- +5 V DC power supply from the PC bus
- Operating system: Windows 10/8/7 or Linux (with CONTEC drivers)
Installation Procedure:
1. Power off the PC and remove the cover.
2. Insert the PI‑32L(PC)V board into an available ISA slot.
3. Secure the board using the bracket screw.
4. Connect external devices to the 37‑pin D‑SUB connector using the appropriate cable.
5. Power on the PC and install the driver software.
6. Configure I/O addresses and interrupt settings via software or jumper switches (depending on system configuration).
Configuration Options:
- Selectable IRQ lines (2–7, 9, 12, 14, 15) for interrupt-driven operation.
- Input logic polarity fixed as negative logic (positive common).
- Address assignment on any 32‑byte boundary within the I/O address space.
Mounting Options:
- Standard internal mounting in PC chassis.
- External wiring via D‑SUB connector and terminal block.
7. Performance & Capabilities
- Input Response Time: ≤ 1 ms typical, ensuring reliable detection of digital transitions.
- Isolation Performance: 1 kV rms isolation between input and PC bus circuits.
- Input Capacity: 32 channels, each capable of handling 12–24 V DC signals.
- Interrupt Handling: Two interrupt lines can be used simultaneously, allowing event‑driven data acquisition.
- Noise Immunity: Opto‑coupler isolation and internal filtering minimize false triggering due to electrical noise.
- Wiring Distance: Up to 50 m between the board and external devices, depending on cable quality and environment.
- Reliability: Industrial‑grade components ensure long‑term stability and low failure rates.
Limitations:
- Input only (no output capability).
- Fixed negative logic configuration (cannot be switched to positive logic).
- Designed for DC input signals only (not suitable for AC).
- Requires external 12–24 V DC power source for input devices.
8. Standards & Compliance
- Bus Standard: PC/AT (ISA) bus compliant.
- Electrical Isolation: Opto‑coupler isolation meeting industrial safety standards.
- EMC Compliance: Designed to meet industrial electromagnetic compatibility requirements.
- RoHS Compliance: Manufactured in accordance with RoHS directives (lead‑free).
- Quality Assurance: Produced under CONTEC’s ISO 9001‑certified quality management system.
- Safety: Isolation voltage rated at 1 kV rms for operator and equipment protection.
9. Additional Information
Warranty:
- Standard CONTEC limited warranty (typically one year from date of purchase).
- Covers defects in materials and workmanship under normal use.
Technical Support:
- Comprehensive online documentation and driver downloads available at [www.contec.com](https://www.contec.com).
- Free technical support via email and phone for registered users.
Maintenance:
- No periodic maintenance required.
- Keep connectors clean and free from dust.
- Avoid exposure to excessive humidity or vibration.
Software & Updates:
- Windows Driver (API‑TOOL for Windows):
Provides Win32 API‑compatible DLLs for easy integration into custom applications.
- Linux Driver (API‑TOOL for Linux):
Includes kernel module and shared library for device access.
- LabVIEW Support (VI‑DAQ):
Free VI library for integrating CONTEC boards into LabVIEW environments.
- Firmware:
No user‑upgradable firmware; functionality defined by hardware and driver software.
Ordering Information:
- Model: PI‑32L(PC)V
- Description: Opto‑Isolated 32‑Channel Digital Input AT Card (12–24 V DC, Negative Logic, 37‑pin D‑SUB)
- Manufacturer: CONTEC Co., Ltd.
- Optional Accessories: PCA37P, PCB37P, EPD‑37A, CM‑32(PC)E, CN5‑D37M
Summary
The CONTEC PI‑32L(PC)V is a robust, opto‑isolated 32‑channel digital input card designed for PC/AT (ISA) bus systems. It provides reliable acquisition of 12–24 V DC digital signals with high noise immunity and electrical isolation. The board’s negative logic configuration and shared positive common simplify wiring in industrial control environments. With support for multiple interrupt lines, 1 kV rms isolation, and a standard 37‑pin D‑SUB connector, it integrates seamlessly into automation, monitoring, and data acquisition systems. Supported by CONTEC’s cross‑platform driver suite and LabVIEW library, the PI‑32L(PC)V offers a dependable, software‑friendly solution for industrial digital input applications.
Product Name: Opto-Isolated 32-Channel Digital Input AT Card
Model: PI-32L(PC)V
Series: PI Series – Digital Input Interface Boards
Article Number: PI-32L(PC)V
Manufacturer: CONTEC Co., Ltd. (Japan)
Product Category: Industrial Automation / Measurement and Control / Digital I/O Interface Boards
The CONTEC PI-32L(PC)V is an opto-isolated 32-channel digital input interface card designed for PC/AT bus systems. It provides reliable, noise-resistant digital input capabilities for industrial control, monitoring, and data acquisition applications. The board features negative logic input configuration, a shared positive common line, and supports 12–24 V DC input levels. It is engineered for robust electrical isolation, high reliability, and compatibility with a wide range of industrial sensors and control devices.
2. Key Features
- 32 Opto-Isolated Digital Inputs: Provides 32 independent input channels, each isolated via opto-couplers to protect the host PC from electrical noise and surges.
- Negative Logic Configuration: All 32 inputs share a positive common terminal, supporting current-sinking (negative logic) input devices.
- Wide Input Voltage Range: Accepts 12 V DC to 24 V DC input signals, allowing flexible integration with industrial sensors and switches.
- High Noise Immunity: Opto-coupler isolation ensures stable operation in electrically noisy environments typical of industrial automation systems.
- Interrupt Capability: Supports two interrupt request (IRQ) lines selectable from IRQ 2–7, 9, 12, 14, 15. Interrupts are triggered on the falling edge of input signals.
- High Isolation Voltage: Provides up to 1 kV rms isolation between input circuits and the PC bus, ensuring protection against voltage transients.
- Compact AT Bus Form Factor: Designed for PC/AT bus architecture, compatible with legacy industrial PCs and control systems.
- Standard Connector Interface: Equipped with a 37‑pin D‑SUB female connector for external wiring.
- Robust Construction: Industrial-grade PCB design with high-quality components for long-term reliability.
- Software Support: Compatible with CONTEC’s API‑TOOL driver suite for Windows and Linux, and VI‑DAQ library for LabVIEW integration.
3. Technical Specifications
| Parameter | Specification |
|----------------|-------------------|
| Input Channels | 32 opto-isolated digital inputs |
| Input Type | Negative logic (current sinking), shared positive common |
| Input Voltage Range | 12 V DC – 24 V DC |
| Input Resistance | 2 kΩ per channel |
| Isolation Voltage | 1 kV rms (input to PC bus) |
| Interrupts | 2 × IRQ selectable from IRQ 2–7, 9, 12, 14, 15 (falling edge trigger) |
| Connector Type | 37‑pin D‑SUB female (DCL‑J37SAF‑20L9 [JAE] or equivalent) |
| Dimensions | 160 mm (L) × 122 mm (H) |
| Bus Interface | PC/AT (ISA) bus |
| Power Supply | +5 V DC from PC bus |
| Power Consumption | Approx. 200 mA (typical) |
| Maximum Wiring Distance | 50 m (recommended) |
| Response Time | ≤ 1 ms typical (optical isolation delay) |
| Operating Temperature | 0 °C – 50 °C (typical industrial environment) |
| Storage Temperature | –10 °C – 60 °C |
| Humidity | 10 % – 90 % RH (non‑condensing) |
| Mounting | Internal PC expansion slot (AT bus) |
| Weight | Approx. 200 g |
4. Functionality
The PI‑32L(PC)V functions as a digital input interface board for PC/AT systems, converting external DC logic signals into TTL‑level signals readable by the host computer. Each input channel is optically isolated from the PC bus, ensuring that electrical noise, surges, or ground potential differences do not affect system stability.
Operation Principle:
- External devices (e.g., sensors, switches, PLC outputs) provide 12–24 V DC signals to the input terminals.
- Each input passes through an opto‑coupler, which converts the electrical signal into an optical signal, isolating the PC circuitry.
- The opto‑coupler output is then converted back to a logic‑level signal for the PC bus interface.
- The board supports interrupt generation on falling edges, allowing event‑driven data acquisition.
Use Cases and Applications:
- Industrial process monitoring and control
- Machine automation and equipment status detection
- PLC and sensor signal acquisition
- Digital signal logging and event counting
- Integration with SCADA and HMI systems
- Laboratory and test automation setups
Compatibility:
- Compatible with PC/AT (ISA) bus architecture.
- Works with CONTEC’s API‑TOOL driver suite for Windows and Linux.
- Supports integration with National Instruments LabVIEW via VI‑DAQ library.
5. Components & Accessories
Included Components:
- PI‑32L(PC)V main board
- User manual and documentation
- Driver software (downloadable from CONTEC website)
Optional Accessories:
- Cables:
- PCA37P / PCB37P (37‑pin D‑SUB cable, 1.5 m)
- PCA37PS / PCB37PS (shielded 37‑pin cable)
- Terminal Blocks:
- EPD‑37A, EPD‑37 (37‑pin screw terminal boards)
- CM‑32(PC)E (terminal module for 32‑point input)
- Connector Sets:
- CN5‑D37M (37‑pin male connector set)
These accessories facilitate easy wiring between the board and external devices such as sensors, switches, and control panels.
6. Installation & Setup
System Requirements:
- IBM PC/AT or compatible system with available ISA expansion slot
- +5 V DC power supply from the PC bus
- Operating system: Windows 10/8/7 or Linux (with CONTEC drivers)
Installation Procedure:
1. Power off the PC and remove the cover.
2. Insert the PI‑32L(PC)V board into an available ISA slot.
3. Secure the board using the bracket screw.
4. Connect external devices to the 37‑pin D‑SUB connector using the appropriate cable.
5. Power on the PC and install the driver software.
6. Configure I/O addresses and interrupt settings via software or jumper switches (depending on system configuration).
Configuration Options:
- Selectable IRQ lines (2–7, 9, 12, 14, 15) for interrupt-driven operation.
- Input logic polarity fixed as negative logic (positive common).
- Address assignment on any 32‑byte boundary within the I/O address space.
Mounting Options:
- Standard internal mounting in PC chassis.
- External wiring via D‑SUB connector and terminal block.
7. Performance & Capabilities
- Input Response Time: ≤ 1 ms typical, ensuring reliable detection of digital transitions.
- Isolation Performance: 1 kV rms isolation between input and PC bus circuits.
- Input Capacity: 32 channels, each capable of handling 12–24 V DC signals.
- Interrupt Handling: Two interrupt lines can be used simultaneously, allowing event‑driven data acquisition.
- Noise Immunity: Opto‑coupler isolation and internal filtering minimize false triggering due to electrical noise.
- Wiring Distance: Up to 50 m between the board and external devices, depending on cable quality and environment.
- Reliability: Industrial‑grade components ensure long‑term stability and low failure rates.
Limitations:
- Input only (no output capability).
- Fixed negative logic configuration (cannot be switched to positive logic).
- Designed for DC input signals only (not suitable for AC).
- Requires external 12–24 V DC power source for input devices.
8. Standards & Compliance
- Bus Standard: PC/AT (ISA) bus compliant.
- Electrical Isolation: Opto‑coupler isolation meeting industrial safety standards.
- EMC Compliance: Designed to meet industrial electromagnetic compatibility requirements.
- RoHS Compliance: Manufactured in accordance with RoHS directives (lead‑free).
- Quality Assurance: Produced under CONTEC’s ISO 9001‑certified quality management system.
- Safety: Isolation voltage rated at 1 kV rms for operator and equipment protection.
9. Additional Information
Warranty:
- Standard CONTEC limited warranty (typically one year from date of purchase).
- Covers defects in materials and workmanship under normal use.
Technical Support:
- Comprehensive online documentation and driver downloads available at [www.contec.com](https://www.contec.com).
- Free technical support via email and phone for registered users.
Maintenance:
- No periodic maintenance required.
- Keep connectors clean and free from dust.
- Avoid exposure to excessive humidity or vibration.
Software & Updates:
- Windows Driver (API‑TOOL for Windows):
Provides Win32 API‑compatible DLLs for easy integration into custom applications.
- Linux Driver (API‑TOOL for Linux):
Includes kernel module and shared library for device access.
- LabVIEW Support (VI‑DAQ):
Free VI library for integrating CONTEC boards into LabVIEW environments.
- Firmware:
No user‑upgradable firmware; functionality defined by hardware and driver software.
Ordering Information:
- Model: PI‑32L(PC)V
- Description: Opto‑Isolated 32‑Channel Digital Input AT Card (12–24 V DC, Negative Logic, 37‑pin D‑SUB)
- Manufacturer: CONTEC Co., Ltd.
- Optional Accessories: PCA37P, PCB37P, EPD‑37A, CM‑32(PC)E, CN5‑D37M
Summary
The CONTEC PI‑32L(PC)V is a robust, opto‑isolated 32‑channel digital input card designed for PC/AT (ISA) bus systems. It provides reliable acquisition of 12–24 V DC digital signals with high noise immunity and electrical isolation. The board’s negative logic configuration and shared positive common simplify wiring in industrial control environments. With support for multiple interrupt lines, 1 kV rms isolation, and a standard 37‑pin D‑SUB connector, it integrates seamlessly into automation, monitoring, and data acquisition systems. Supported by CONTEC’s cross‑platform driver suite and LabVIEW library, the PI‑32L(PC)V offers a dependable, software‑friendly solution for industrial digital input applications.
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ContecCatalog2011-2012-en-H Digital IO.pdf
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