| Item | Specification |
|---|---|
| Part Number | 1791-OB16 |
| Brand & Series | Allen‑Bradley / Rockwell Automation Bulletin 1791 Block I/O Remote I/O Module |
| Module Type | 16-point DC Sourcing Digital Output Block |
| Communication Interface | Remote I/O (RIO) link for PLC‑5, SLC 500 controllers |
| Number of Outputs | 16 discrete outputs, arranged in two groups of 8 |
| Output Type | Sourcing (PNP) DC output |
| Rated Output Voltage | 10…30 VDC (nominal 24 VDC) |
| Per-point Continuous Current | 0.5 A maximum per channel |
| Surge Current Capacity | 3 A for 10 ms maximum per output |
| Minimum Load Current | 15 mA per output |
| Maximum On-state Voltage Drop | 1.5 V @25 °C |
| Off-state Leakage Current | ≤0.5 mA per point |
| Signal Delay | Turn-on ≤0.5 ms; Turn-off ≤1.0 ms |
| Isolation | I/O circuit isolated from RIO communication circuit |
| Mounting | DIN rail or panel mounting |
| Operating Temperature | 0 °C ~ +55 °C |
| Storage Temperature | -40 °C ~ +85 °C |
| Relative Humidity | 5–95 % RH, non‑condensing |
| Dimensions (H × W × D) | 176.5 × 68.8 × 98 mm |
| Approximate Weight | 1.0 kg |
| Product Status | Discontinued legacy remote block I/O |
