II. Model Interpretation

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

6512: 651x series (industrial isolated DIO), 64-channel isolated output high-current version

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

Part Number: 778969-01NI

Status: In production; upgrade of the same series can refer to PXI-6513 (I/O) / 6514 (high density)

III. Technical Parameters (25℃)

1. Digital Output (DO)

Channels: 64 isolated source outputs (Source), divided into 8 groups (Bank 0–7), each group 8 channels NI

Voltage Range: 0–30 VDC (compatible with 24 V industrial system)

Drive Capacity: 350 mA continuous (source output), direct drive relay / SSR

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

Logic Levels: High ≥ +10 V, Low ≤ +5 V (24 V system)

Response Delay: Typical 75 μs

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

Watchdog: Software failure automatically switches to safe state (configurable) NI

2. Physical and Environmental

Size: 3U single slot (22×124×126 mm)

Operating Temperature: 0–55℃ (industrial extended -20–70℃ selectable)

Power Consumption: 300 mA @ +3.3 V, 250 mA @ +5 V (approximately 2.4 W)

Calibration: No regular calibration (pure digital module)

IV. Interface and Communication Configuration

Front Panel Interface: 100-pin anti-stick SCSI motherhead

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 synchronization control

V. Core Functions

64-channel isolation + 350 mA high current: Single card drives 64 24 V relays / SSR / indicators, no external driver required, group-to-group isolation to resist ground current and high-voltage interference NI.

Industrial-grade safety mechanism: Watchdog + programmable power-on + change detection, software crash automatic protection, default safe state upon power-on, avoiding equipment misoperation NI.

Wide voltage compatibility + source output: 0–30 V compatible with global 24 V industrial standard, ** source output (Source) ** directly drives PNP-type loads, wiring simple.

High-density single slot: 64-channel 3U single slot, saves chassis slots, suitable for large-scale actuator control array.

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

VI. Application Scenarios

Industrial automation control: PLC expansion DO, 24 V relay / contactor control, valve / motor start-stop, SSR drive.

Power and energy systems: High-voltage switch cabinet closing and opening control, circuit breaker / disconnect switch drive, relay protection execution circuit.

Automotive electronic testing: Body control module (BCM) load drive, vehicle lights / wipers / door lock actuators control.

ATE and test system: Large-scale relay matrix control, PCB test fixture drive, safety interlock execution. Railway / Ship Control: Vehicle-mounted / Ship-mounted actuators, door control / lighting / alarm outputs, control in strong interference environments.

VII. Usage and Maintenance Instructions

Installation and Power On

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

Operating Temperature: 0–55℃. Keep the air ducts unobstructed and avoid overloading due to high temperatures.

Wiring and Operation

Avoid frequent plugging and unplugging of the 100-pin interface; it is recommended to use the CB-100 isolation wiring box for intermediate connection.

Output Voltage: **≤30 V**, Current per channel: **≤350 mA**, Do not short circuit; use shielded twisted pair for long distances, keep away from strong electricity / motors.

Watchdog Timeout Time: Set according to safety requirements (100–500 ms), ensuring rapid response to faults.

Daily Maintenance

Keep the interface clean, prevent dust accumulation during long-term inactivity; no calibration required, regularly check the tightness of connection terminals.

Isolation Layer: Conduct regular insulation tests (250 Vrms/1 minute) to ensure isolation performance.