I. Digital Inputs (DI) – 24 ch, opto‑isolated, sink/source

• Channels: 24 channel‑to‑channel isolated optical inputs

• Voltage Range: ‑60 VDC to +60 VDC (absolute max)

• Logic Levels:

  • Low: ≤ 1 VDC

  • High: ≥ 3.2 VDC

• Input Type: sink / source configurable (24–60 V field logic)NI

• Input Current: 1.5 mA/ch (5 V); 3 mA/ch (60 V) max

• Filtering: per‑channel programmable digital debounce / glitch filterNI

• Isolation: 60 VDC continuous channel‑to‑channel & channel‑to‑earth

• Functions: change detection, event counting, RTSI triggering

II. Digital Outputs (DO) – 24 ch, solid‑state relay (Form A), isolated

• Channels: 24 normally‑open solid‑state relay outputs, channel‑to‑channel isolated

• Load Voltage: 0–60 VDC max; 30 Vrms AC max

• Load Current: 150 mA continuous / channel

• On‑Resistance: 18 Ω max

• Off‑Leakage: 1 µA max

• Output Type: sink / source capable (external power required)NI

• Isolation: 60 VDC channel‑to‑channel & channel‑to‑earth

• Life: > 10⁸ operations (no mechanical wear)

III. Industrial Features

• Watchdog Timer: 1–65535 ms; fault → user‑defined safe stateNI

• Programmable Power‑Up State: predefined output state on power‑onNI

• Jumperless: all config via NI‑DAQmx (no hardware changes)

• High CMR: noise immunity for motor/inverter environments

• RTSI Triggering: sync with other NI devices

• UL Listed: UL 61010‑1 (IEC 61010‑1)

IV. Physical & Environmental

• Size: half‑length PCI, ~17.5 × 10.7 cm

• Weight: ~0.2 kg

• Temperature: 0 ~ 55 °C (oper); −20 ~ 70 °C (storage)

• Humidity: 10%–90%, non‑condensing

• Power: +5 V @ ~250 mA; +3.3 V @ ~400 mA (typical)

V. Wiring Highlights

• DI (sink/source): sensor between DI+ and DI‑; works with 24–60 V field power

• DO (SSR): external 60 V → load → DO → isolated GND; max 150 mA

• Inductive loads: add 1N4007 freewheeling diode across coil

• Shielding: shield to isolated field GND, not system GND

VI. Core Advantages & Applications

• 24 ch high‑voltage isolated DI (‑60 ~ +60 V) + 24 ch isolated SSR DO (60 V / 150 mA)

• 60 V true channel‑to‑channel isolation, sink/source on both sides, watchdog, programmable power‑up, long SSR lifeNI

• Ideal for high‑voltage sensor banks, solenoid arrays, industrial machine I/O, automotive test stands, where 60 V isolation and robust noise immunity are required