The Allen-Bradley 1734-IB8SK is a high-integrity safety module from the POINT Guard I/O family. Specifically, this module provides eight current sinking safety input channels and four current sourcing pulse test outputs. It operates with an input supply voltage range of 11 to 30 VDC, offering flexibility for various power systems. A key feature of the 1734-IB8SK is its conformal coating, which protects the circuitry against moisture, dust, and corrosive agents. Therefore, this module excels in demanding industrial environments where standard modules might fail prematurely.
The 1734-IB8SK meets rigorous safety standards for critical applications. It complies with Safety Integrity Level (SIL) 3 and supports Safety Category 3 and 4 configurations. Furthermore, this module works seamlessly with GuardLogix, Compact GuardLogix, and SmartGuard controllers. It distributes safety I/O across the POINT I/O platform, enabling efficient safety system design. Consequently, the 1734-IB8SK is a trusted choice for emergency stop systems, gate switches, and light curtain monitoring.
Each of the eight input channels on the 1734-IB8SK supports a sinking wiring configuration. The minimum on-state current is 3.3 mA, while the maximum off-state current is 1.3 mA. The module's input type complies with Type 3 specifications per IEC 61131-2, ensuring compatibility with a wide range of safety sensors. Moreover, the individual channel reaction time is less than 16.2 ms, providing fast response to safety events. Each channel also features independently configurable on-delay and off-delay settings, allowing engineers to fine-tune performance and prevent false triggers.
The 1734-IB8SK includes four pulse test outputs that support current sourcing wiring. These outputs connect to sources labeled T0, T1M, T2, and T3M, enabling comprehensive external wiring short checks. Each pulse test output delivers a maximum current of 0.7 A per channel, with a total module output current of 2.8 A at 40°C (104°F). This feature helps detect wiring faults that could compromise system safety, making the 1734-IB8SK an essential component for SIL-rated installations.
This safety module offers flexible operating modes to suit different safety integrity requirements. First, the single-channel mode suits applications requiring up to Safety Category 2. Alternatively, the dual-channel mode evaluates the consistency of two input signals, enabling the 1734-IB8SK to meet the demands of Safety Category 3 and 4 applications. A configurable discrepancy time parameter defines the acceptable difference between two channels before the module declares a fault, ensuring reliable operation even in complex safety circuits.
The 1734-IB8SK draws its operating power from the system backplane via the communication adapter or an expansion power supply. While the module supports a separate field bus power supply, this is optional and not required for normal operation. Its robust design ensures reliable performance across the specified voltage range. Additionally, the conformal coating provides an extra layer of protection against environmental stress, extending the module's service life in aggressive industrial settings.
This safety module requires an 8-point terminal base for proper installation. The terminal base provides the physical mounting and wiring interface for field connections. The compact design of the 1734-IB8SK allows for space-efficient placement within control cabinets, making it suitable for systems with limited panel space.
First, disconnect all power sources before starting the installation. Next, mount the appropriate 8-point terminal base onto the DIN rail. Then, verify the keyswitch alignment before inserting the 1734-IB8SK module into the base. After that, connect field wiring for the eight safety inputs and four pulse test outputs, ensuring correct polarity for sinking inputs and sourcing outputs. Finally, restore power and verify that the module status indicators confirm normal operation. For SIL 3 or Category 4 applications, always configure the module in dual-channel mode with appropriate discrepancy time and delay settings.
One 1734-IB8SK POINT Guard I/O safety module with conformal coating
One removable terminal block
One mounting base
Installation instructions manual
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1. What makes the 1734-IB8SK different from the standard 1734-IB8S?
The 1734-IB8SK includes conformal coating that protects against moisture, dust, and corrosive environments. The standard 1734-IB8S lacks this protective coating. Therefore, the 1734-IB8SK suits harsh industrial applications where environmental exposure is a concern.
2. What safety standards does the 1734-IB8SK meet?
The 1734-IB8SK complies with SIL 3 and supports Safety Category 3 and 4 configurations. It meets Type 3 input specifications per IEC 61131-2, ensuring compatibility with a wide range of safety sensors.
3. Which controllers work with the 1734-IB8SK?
This module works with GuardLogix, Compact GuardLogix, and SmartGuard controllers. It distributes safety I/O across the POINT I/O platform and supports CIP safety protocol extensions.
4. What are the pulse test outputs used for on the 1734-IB8SK?
The four pulse test outputs enable external wiring short checks when connected to sources T0, T1M, T2, and T3M. This feature helps detect wiring faults that could compromise system safety, making it essential for SIL-rated installations.
5. Can the 1734-IB8SK operate in single-channel mode?
Yes, the 1734-IB8SK supports both single-channel mode (up to Category 2) and dual-channel mode (Category 3 and 4). The configurable discrepancy time and individual channel delays allow fine-tuning for specific application requirements.
| Brand Name | |
| Model No. | 1734-IB8SK |
| Product Type | Digital Safety Input Module |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
