II. Model Interpretation

PXI: 3U single slot, standard PXI bus (compatible with PXIe mixed slots)

6513: 651x series (industrial isolated DIO), 64-channel isolated DIO with high-current output

Core Architecture: 8 groups (Bank 0–7) × 8 channels, 250 Vrms isolation between groups

Part Number: 778971-01NI

Status: In production; compared with 6512 (pure output)/6514 (high density), same series

III. Technical Parameters (25℃)

1. Digital I/O

Channels: 64 DIO (32 DI + 32 DO, configurable), 8 groups × 8 channels

Input Voltage: -30 VDC to +30 VDC (compatible with 24 V industrial logic) NI

Output Voltage: 0 to 30 VDC (24 V system adaptation)

Output Drive: 500 mA continuous (sinking current / Sink), directly drives relays / SSR

Isolation: 250 Vrms between groups (1 minute), channel-to-channel common ground NI

Input Threshold: Logic high ≥ +10 V, logic low ≤ +5 V

Input Filtering: Software programmable (1 μs to 1 ms), debouncing / de-impacting

Response Delay: Typical 80 μs

Power-On State: Programmable (all off / all on / hold) NI

Watchdog: Software failure automatic switch to safe state (configurable) NI

2. Physical and Environmental

Size: 3U single slot (22×124×126 mm)

Operating Temperature: -20 to 70℃ (industrial grade)

Power Consumption: 150 mA @ +5 V, 200 mA @ +3.3 V (approximately 1.5 W)

Calibration: No regular calibration (pure digital module)

IV. Interface and Communication Configuration

Front Panel Interface: 100-pin anti-dielectric SCSI mother head

Adapter Cable: SH100-100, R1005050 (100-pin to 2×50-pin)

Terminal Box: CB-100, SCB-100A (with isolation terminals)

Bus: PXI (PCI, trigger, 10 MHz reference clock)

Driver: NI-DAQmx 9.0+, supports LabVIEW, Python, C#, TestStand

Synchronization: PXI trigger bus, multi-module synchronous acquisition and control

V. Core Functions

64-channel isolated DIO + 500 mA high current: Single card simultaneously monitors 32 sensors + controls 32 relays / SSR, sinking current output directly drives NPN load, no external driver required, group-to-group isolation to resist ground current and high-voltage interference.

Industrial-grade safety mechanism: Watchdog + programmable power-on + input filtering + change detection, software crash automatic protection, default safe state upon power-on, contact debouncing to prevent false triggering NI.

±30 V wide voltage compatibility: Input supports positive and negative voltages, compatible with global 24 V industrial standard, compatible with NPN/PNP sensors NI.

High-density single slot: 64-channel 3U single slot, saves chassis slots, suitable for large-scale I/O mixed systems.

Strong anti-interference isolation: 250 Vrms group-to-group isolation, prevents high voltage from entering the PXI system, protects equipment and personnel safety NI.

VI. Application Scenarios

Industrial automation "monitoring + control": PLC expansion DIO, 24 V sensor acquisition + relay / valve control, production line status feedback + actuator drive. Power and Energy System: Switch cabinet status monitoring + Open-close control, circuit breaker position feedback + Drive, relay protection contact collection + Execution circuit NI.

Automotive Electronic Testing: BCM analog quantity collection + Load driving, vehicle lights / wipers / door lock status monitoring + Control.

ATE and Test System: Relay matrix monitoring + Control, test fixture status collection + Drive, safety interlock signal closed loop.

Railway / Ship Control: On-board / shipboard analog quantity monitoring + Actuator control, door control / lights / alarm signal closed loop, integrated NI in strong interference environment.

VII. Installation and Maintenance Instructions

Installation and Power On

Disconnect the power supply card, ensure the chassis is reliably grounded; after powering on, NI‑DAQmx self-checks, no preheating required.

Operating Temperature: -20 to 70℃, keep the air duct unobstructed, avoid overloading due to high temperature.

Wiring and Operation

Avoid frequent plugging and unplugging of 100-pin interface, recommended to use CB‑100 isolation wiring box for intermediate transfer.

Input Voltage: ≤±30 V, Output Current per Channel: ≤500 mA,严禁 short circuit； Use shielded twisted pair for long-distance， keep away from strong electricity / motors NI.

Filtering Time： Set according to contact characteristics (10–50 ms)， Watchdog Timeout Time： Set according to safety requirements (100–500 ms) NI.

Daily Maintenance

Keep the interface clean, prevent dust accumulation in long-term idle state; No calibration required, regularly check the tightness of wiring terminals.

Isolation Layer: Regular insulation test (250 Vrms/1 minute) to ensure isolation performance NI.