| Parameter | Value |
|---|---|
| Model Number | 1734-IB8S |
| Product Name | Allen-Bradley POINT Guard I/O Safety Digital Input Module |
| Product Series | POINT Guard I/O |
| Product Type | Safety Digital Input Module |
| Input Channels | 8 (single or dual-channel safety configuration) |
| Input Type | Current Sinking (PNP) |
| Nominal Input Voltage | 24 V DC |
| Operating Voltage Range | 19.2 V DC to 28.8 V DC |
| Input Current (ON State) | Typical: 4 mA @ 24 V DC; Min: 3.3 mA; Max: 5 mA |
| Input Current (OFF State) | Max: 1.3 mA |
| Input Impedance | Approx. 6 kΩ @ 24 V DC |
| Response Time | ON to OFF: Max 16.2 ms; OFF to ON: Adjustable 0-126 ms (6 ms increments) |
| Input Filter Time | OFF to ON: 0-126 ms (6 ms increments); ON to OFF: 0-126 ms (6 ms increments) |
| Test Outputs | 4 pulse current sourcing outputs (for short circuit detection) |
| Safety Ratings | SIL 3, Performance Level e (PL e), Category 4 (dual-channel mode); SIL 2, PL d, Category 2 (single-channel mode) |
| Isolation | Continuous: 50 V DC between field side and system; Tested: 500 V AC for 60 seconds |
| POINTBus Current | Max: 175 mA |
| Power Bus Current (No Load) | Max: 25 mA |
| Power Dissipation | Max: 3.0 W |
| Module Dimensions (HxWxD) | 77 mm × 25 mm × 55 mm (3.03 in × 0.98 in × 2.17 in) (without terminal block) |
| Weight | Approx. 62.4 g (2.2 oz) |
| Mounting | 35 mm DIN Rail (EN 50022 compliant) |
| Terminal Blocks Compatible | 1734-TB, 1734-TBS, 1734-TOP, 1734-TOPS, 1734-TOP3, 1734-TOP3S |
| Operating Temperature | -20°C to 55°C (-4°F to 131°F) |
| Storage Temperature | -40°C to 85°C (-40°F to 185°F) |
| Relative Humidity | 5% to 95% (non-condensing) |
| LED Indicators | 1 yellow lock status, 1 green/yellow power status, 8 I/O channel status |
| Certifications | UL 508, CSA C22.2 No. 142, IEC 61131-2, TUV General Safety, IECEx Scheme |
| Backplane Compatibility | POINT I/O Backplane (1734-AENTR/1734-AENT with firmware 9.0 or later) |
| Compatible Controllers | GuardLogix, SmartGuard 600, Compact GuardLogix, GuardPLC |
| Mission Time | 20 years |