1. Introducció
This manual provides essential information for the installation, operation, and maintenance of the Allen Bradley 1734-Ib8s Ser B, Point Guard I/O Safety Input Module 1734-Ib8s Series B. Please read this manual thoroughly before using the device to ensure safe and efficient operation.
The Allen Bradley 1734-IB8S Series B is a Digital Input Module 24VDC 8-Ch Sink Safety, designed for industrial automation applications.
2. Producte acabatview
The Allen Bradley 1734-IB8S Series B is a Digital Input Module designed for industrial automation applications. It features 8 safety-rated sink inputs for 24V DC systems.

Figure 2.1: Allen Bradley 1734-IB8S Series B module in its factory sealed box, showing the product label with CAT 1734-IB8S and serial number.

Figura 2.2: Primer pla view of the product packaging for the 1734-IB8S module, emphasizing the factory seal and key identification numbers like CAT 1734-IB8S and the barcode 10612598350619.
Les característiques clau inclouen:
- 8 Safety-Rated Sink Inputs
- 24V DC Operating Voltage (11VDC - 28.8VDC)
- Input Delay Time, On to Off: 16.2 ms max
- On-State Current Min/Max: 3.3 mA/5 mA
- Maximum Off-State Current: 1.3 mA
- PointBus Current: 175 mA
3. Configuració i instal·lació
Proper installation is crucial for the safe and reliable operation of the 1734-IB8S module. Follow these steps carefully:
- Desconnexió d'alimentació: Ensure all power to the control system is disconnected before beginning installation.
- Muntatge: Mount the module onto a compatible POINT I/O backplane or DIN rail. Ensure it is securely latched.
- Cablejat: Connect the 24V DC power supply to the module's power terminals. Wire the safety input devices to the designated input channels. Refer to the system wiring diagrams for specific connections.
- Posada a terra: Ensure proper grounding of the module and associated equipment to prevent electrical hazards and ensure signal integrity.
- Verificació: Double-check all wiring connections for correctness and security before reapplying power.
Nota: Always consult the complete system documentation for detailed wiring diagrams and safety guidelines.
4. Instruccions de funcionament
Once installed and powered, the 1734-IB8S module operates as part of the larger control system. Its primary function is to monitor the state of 8 safety-rated sink inputs.
- Monitorització d'entrada: The module continuously monitors the voltage levels on its input channels.
- Indicadors d'estat: Observe the LED indicators on the module for real-time status of each input channel. Typically, an illuminated LED indicates an active input.
- Integració del sistema: The input status is communicated to the programmable logic controller (PLC) or safety controller via the PointBus.
- Safety Functionality: As a safety-rated module, it is designed to meet specific safety integrity levels (SIL) or performance levels (PL) when integrated into a safety system. Refer to the safety manual for detailed safety function implementation.
Important: Do not attempt to bypass or modify safety circuits. Always follow established safety procedures.
5. Manteniment
The 1734-IB8S module is designed for minimal maintenance. However, periodic checks can help ensure long-term reliability.
- Inspecció visual: Inspeccioneu periòdicament el mòdul per detectar qualsevol signe de danys físics, connexions soltes o acumulació excessiva de pols.
- Neteja: If necessary, gently clean the module's exterior with a soft, dry cloth. Do not use solvents or abrasive cleaners.
- Integritat de la connexió: Assegureu-vos que totes les connexions del cablejat estiguin ben fixades i lliures de corrosió.
- Condicions ambientals: Verifiqueu que l'entorn operatiu es mantingui dins dels rangs de temperatura i humitat especificats.
Precaució: Always disconnect power before performing any maintenance or cleaning procedures.
6. Solució De Problemes
This section provides guidance for common issues encountered with the 1734-IB8S module.
| Problema | Causa possible | Solució |
|---|---|---|
| Module LEDs are off | No power to module or backplane. | Check power supply connections and ensure backplane power is active. |
| Input LED not illuminating | Input device not active, wiring error, or faulty input device. | Verify input device operation. Check wiring for breaks or shorts. Test input device. |
| Module not communicating with PLC | Incorrect module configuration, PointBus issue, or PLC programming error. | Verify module configuration in PLC software. Check PointBus connections. Review Lògica del programa PLC. |
If troubleshooting steps do not resolve the issue, contact Allen-Bradley technical support.
7. Especificacions
Detailed technical specifications for the Allen Bradley 1734-IB8S Series B module:
- Número de model: 1734-IB8S
- Sèrie: B
- Tipus d'entrada: Digital Sink Safety-Rated
- Nombre de canals: 8
- Vol. Operatiutage: 24V DC (Range: 11VDC - 28.8VDC)
- Input Delay Time (On to Off): 16.2 ms màx
- On-State Current (Min/Max): 3.3 mA / 5 mA
- Maximum Off-State Current: 1.3 mA
- PointBus Current: 175 mA
- Dimensions del producte: 8 x 8 x 7 polzades
- Pes de l'article: 15.87 unces
- Fabricant: Allen Bradley
8. Garantia i Suport
For information regarding product warranty, technical support, and service, please refer to the official Allen-Bradley or Rockwell Automation website, or contact your authorized distributor.
Recursos en línia: Visita el Rockwell Automation weblloc for product documentation, software downloads, and support forums.
Suport tècnic: Contact Allen-Bradley technical support for assistance with product issues, configuration, or advanced troubleshooting.