The Allen-Bradley 1734-IB8S 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 requires a nominal operating voltage of 24 Volts DC, with an acceptable range from 19.2 to 28.8 Volts DC. This module excels in safety instrumented systems, making it an ideal choice for applications that demand reliable and fail-safe operation.
The 1734-IB8S excels in critical safety functions across various industries. For instance, it connects seamlessly to Emergency Stop push buttons, gate switches, light curtains, and other safety devices. Furthermore, this module works with SmartGuard, GuardLogix, and Compact GuardLogix controllers. It also supports CIP safety protocol extensions within the POINT I/O platform. Consequently, the 1734-IB8S integrates easily into existing safety architectures without extensive reconfiguration.
This safety module offers flexible operating modes to suit different safety integrity levels. First, the dual-channel mode evaluates the consistency of two input signals. This capability allows the 1734-IB8S to meet the requirements for Safety Category 3 and 4 applications. Alternatively, the single-channel mode evaluates a single signal, making the module suitable for Safety Category 2 applications. Additionally, a configurable discrepancy time parameter defines the acceptable time difference between two channels before the module declares a fault.
The 1734-IB8S includes a valuable external wiring short check function. This feature activates when input channels connect to test outputs, helping detect wiring faults that could compromise safety. Moreover, each channel has individually adjustable ON and OFF signal delays. These delays prevent false positive and false negative readings caused by signal fluctuations or electrical noise, thereby enhancing system reliability and reducing unnecessary downtime.
The 1734-IB8S draws a maximum power bus current of 25 mA under no-load conditions. Its power dissipation reaches 3.4 Watts, with a corresponding maximum thermal dissipation of 11.62 BTU/hour. The continuous isolation voltage stands at 50 Volts, ensuring proper separation between field and logic circuits. The input current maximum reaches 175 mA, and each channel delivers a reaction time of 16.2 milliseconds, providing fast response to safety events.
This safety module measures 77 x 25 x 55 mm (3.03 x 0.98 x 2.17 inches) and weighs approximately 62.4 grams (2.2 ounces). It features an open-style enclosure and supports both horizontal and vertical mounting orientations. The 1734-IB8S requires either a 1734-TOP or 1734-TB terminal base for proper installation. Additionally, the keyswitch alignment requires Key 1 (left) Position 8 and Key 2 (right) Position 1 to prevent incorrect insertion.
The 1734-IB8S communicates over standard industrial networks through compatible adapters. For instance, it supports EtherNet/IP via the 1734-AENT or 1734-AENTR adapters, and DeviceNet via the 1734-PDN adapter. This flexibility allows the module to fit seamlessly into various control architectures. The 1734-IB8S is available in both Series A and Series B versions, offering options for different system requirements.
First, disconnect the power supply before beginning installation. Next, mount the appropriate terminal base (1734-TOP or 1734-TB) onto the DIN rail. Then, verify the keyswitch alignment settings before inserting the 1734-IB8S module into the base. After that, connect field wiring for both inputs and 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 applications requiring Safety Category 3 or 4, always configure the module in dual-channel mode with appropriate discrepancy time settings.
One 1734-IB8S Guard I/O safety module
One removable terminal block
One mounting base
Installation instructions manual
All orders ship via FedEx, UPS, or DHL for fast and reliable worldwide delivery. We securely package your module to prevent damage during transit.
1. What safety applications suit the 1734-IB8S?
The 1734-IB8S works well with Emergency Stop push buttons, gate switches, light curtains, and other SIL-rated safety devices. It supports both single-channel (Category 2) and dual-channel (Category 3 and 4) configurations.
2. Which controllers work with the 1734-IB8S?
This module works with SmartGuard, GuardLogix, and Compact GuardLogix controllers. It also communicates via CIP safety protocol extensions on the POINT I/O platform.
3. What terminal base does the 1734-IB8S require?
The 1734-IB8S requires either the 1734-TOP or 1734-TB terminal base assembly. The keyswitch positions are Key 1 (left) Position 8 and Key 2 (right) Position 1.
4. How does the discrepancy time setting function on the 1734-IB8S?
The configurable discrepancy time defines the acceptable time difference between two input signals in dual-channel mode. If this time exceeds the set value, the module declares a fault to maintain safety integrity.
5. What networks does the 1734-IB8S support?
The 1734-IB8S supports EtherNet/IP via the 1734-AENT or 1734-AENTR adapters, and DeviceNet via the 1734-PDN adapter. This enables flexible integration into various control systems.
| Brand Name | |
| Model No. | 1734-IB8S |
| Product Type | Guard I/O Safety Module |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
