1734-IB8S Allen-Bradley Safety Input Module | POINT I/O

1734-IB8S Allen-Bradley POINT I/O Guard Safety Module

Key Technical Specifications

• Manufacturer: Allen-Bradley. Catalog Number: 1734-IB8S (Series A and B available).
• Module Type: Guard I/O Safety Module with 8 current sinking inputs and 4 current sourcing pulse test outputs.
• Electrical Ratings: Requires a nominal 24V DC supply (operating range 19.2-28.8V DC). Maximum power dissipation is 3.4 Watts (11.62 BTU/hr).
• Performance: Features configurable discrepancy time and individual ON/OFF signal delays to prevent false readings. Each channel has a reaction time of 16.2 milliseconds.
• Environmental Tolerance: The open-style enclosure supports horizontal or vertical mounting. Current derates to 2.8A at 20° Celsius, ensuring reliable operation in various conditions.
• Isolation & Interference: Provides continuous isolation voltage of 50 Volts and includes external wiring short checks when combined with test outputs to enhance signal integrity and noise immunity.

Frequently Asked Questions (FAQ)

• What controllers is the 1734-IB8S compatible with?
  The 1734-IB8S works seamlessly with GuardLogix, Compact GuardLogix, and SmartGuard controllers, administering CIP Safety protocol extensions.
• Can I use this module for both single and dual-channel safety devices?
  Yes. You can configure it for Single-Channel mode (Category 2) or Dual-Channel mode (Category 3 and 4) with adjustable discrepancy time for evaluating signal consistency.
• How does the 1734-IB8S prevent false trigger readings?
  It features individually adjustable ON and OFF signal delays per channel and an external wiring short check, which filters out signal fluctuations to prevent false positives or negatives.
• What is the maximum input current per channel?
  The maximum input current for the 1734-IB8S is 175 mA. The module draws a max bus current (no load) of 25 mA.
• What terminal base do I need for installation?
  You must use either the 1734-TOP or 1734-TB terminal base to connect field wiring to this safety module.

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