Allen-Bradley 1791DS-IB16 16-Channel Safety Input Module

1791DS-IB16 Safety Input Module – Key Facts

• Brand: Allen-Bradley / Rockwell Automation
• Model: 1791DS-IB16
• Series: Guard I/O 1791ES / 1791DS
• Inputs: 16 single-channel (safety)
• Nominal Voltage: 24V DC (19.2–28.8V range)
• Protection: IP20, short-circuit protected
• Temperature: -4°F to 140°F (-20°C to 60°C)
• Weight: 1.00 lbs (0.45 kg)

Technical Specifications (at a Glance)

• On-state voltage: 11V DC (min) | Off-state: 5V DC (max)
• On-state current: 3.3 mA (typ) | Off-state: 1.3 mA
• Output current (pulse test): 0.7 A per channel
• Output leakage: 0.1 mA (max) | Residual voltage: 1.2V (max)
• DeviceNet power: 11–25V DC
• Power consumption: 85 mA @ 24V DC

Built-in Safety & Diagnostics

• Electronic short-circuit protection on every input.
• Detects faults before they damage the module.
• Configurable pulse test outputs for sensor monitoring.
• Password-protected configuration lock for security.
• Supports single-channel and dual-channel safety devices.

Compatible Devices & Systems

• Emergency stop switches and light curtains.
• Safety interlock switches and door monitors.
• Two-hand controls and enabling devices.
• Works with GuardLogix and DeviceNet scanners.
• Ideal for OEM machinery and process safety loops.

Oiltech Controls’s Insight

• This module is a reliable choice for SIL 2 / PL d applications.
• Its 16 inputs allow efficient consolidation of safety signals.
• We recommend pairing it with a GuardLogix controller for best performance.
• For new installations, order the matching terminal base separately.

Professional FAQ – 5 Expert Answers

• Q: Can I use this module with non-safety sensors?
  A: Yes, but we strongly advise using safety-rated sensors to maintain the system’s integrity. The module can monitor standard sensors, but the safety rating applies only when used with certified devices.
• Q: How do I configure the pulse test outputs?
  A: Use Rockwell’s RSNetWorx for DeviceNet. Set each output as pulse test source, 24V DC source, or standard output. Always test your configuration with a dummy load before going live.
• Q: What is the maximum cable length for inputs?
  A: Keep input wiring under 30 meters (98 feet) to avoid voltage drop and noise. For longer runs, use shielded cables and separate routing from power lines.
• Q: Can I hot-swap this module?
  A: No, the 1791DS-IB16 is not designed for hot-swapping. Always disconnect power before removal or insertion to prevent damage to the module or the backplane.
• Q: Which controller is best for this module?
  A: The GuardLogix series (e.g., 1756-L7x) offers native support. For older systems, use a DeviceNet scanner like the 1756-DNB. Check your controller’s firmware version for compatibility.

Order & Shipping Details

• Warranty: 12 months against manufacturing defects.
• Dispatch: 24–28 hours after order confirmation.
• Carriers: FedEx, UPS, DHL (tracked).
• Packaging: Anti-static bag with foam protection.

Why Buy From Oiltech Controls?

• 15+ years in industrial automation spare parts.
• Global shipping with real-time tracking.
• Tested surplus/refurbished options available.
• 12-month warranty on every order.
• Technical verification before shipment.
• Expert support for obsolete systems.

Contact us: info@oiltechcontrols.com | +86 158 8020 0923 (WhatsApp)

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