To Next PageTo Next PageHow to troubleshoot Allen-Bradley Control Unit when module status is off?
If the module status is off, it indicates that no power is applied to the device. To resolve this, check the power supply to ensure it is functioning correctly.
What to do if Allen-Bradley Control Unit network status is flashing red?
A flashing red network status indicates that one or more I/O connections are in a timed-out state. You should check all I/O connections to resolve this issue.
What to do if Allen-Bradley Control Unit module status is flashing red?
If the module status is flashing red, this indicates a recoverable fault. You should investigate and resolve the fault to return the module to normal operation.
Why is the Allen-Bradley Control Unit network status off?
If the network status is off, it means the device is not online or hasn't completed the duplicate MAC ID test. Ensure the device is powered and check the module status indicator.
Why is Allen-Bradley Control Unit module status flashing green?
A flashing green module status indicates that the device needs commissioning because the configuration is missing or incorrect. Complete the commissioning process to resolve this.
What does it mean when Allen-Bradley Control Unit network status is red?
A red network status indicates a critical link failure or a failed communication device. You should investigate the communication device to identify and fix the issue.
What does Allen-Bradley Control Unit network status flashing red/green mean?
A flashing red/green network status indicates a communication faulted device, meaning the device has detected a network access error. You should resolve the communication fault to restore normal operation.
What to do if Allen-Bradley Control Unit module status is red?
If the module status is red, this indicates an unrecoverable fault that may require device replacement. Replace the device.
General| Brand | Allen-Bradley |
|---|---|
| Model | 1734-OB8 |
| Category | I/O Systems |
| Language | English |
Describes the manual's goal: how to install, configure, and troubleshoot POINT I/O modules.
Lists and describes 1734 digital and 1734D POINTBlock modules.
Details features of 24V DC and AC input modules, including sinking and sourcing types.
Explains DC output modules (sourcing, sink) and their diagnostic features.
Introduces analog input (IE2C/IE2V) and output (OE2C/OE2V) modules with two channels.
Details input module features like alarms, disable alarms, update rate, notch filter, and digital filter.
Describes output module features like alarms, disable alarms, fault/idle mode actions, and clamps.
Warns about potential explosion risks in hazardous locations.
Provides guidelines to prevent damage from electrostatic discharge.
Details the procedure to install the mounting base assembly on a DIN rail.
Guides on how to install an I/O module into the mounting base, including keyswitch usage.
Details wiring diagrams and connections for these sink input modules.
Covers wiring diagrams and connections for the 1734-IB4D sink input modules.
Provides wiring diagrams and connections for these source input modules.
Details wiring for these protected output modules.
Shows wiring diagrams for OB2 and OB2E protected output modules.
Covers wiring diagrams and connections for the OB2EP protected output module.
Describes the OW2 and OW4 relay output modules.
Illustrates internal power bus wiring for OW2 relay modules.
Shows external power wiring for OW2 relay modules.
Depicts external power wiring for OW4 relay modules.
Covers the OV2E, OV4E, OV8E sink output modules.
Illustrates the wiring diagram for the OV2E DC sink output module.
Shows the wiring diagram for the OV4E DC sink output module.
Details the wiring diagram for the OV8E DC sink output module.
Describes the 1734-OX2 2-relay output modules.
Illustrates internal power bus wiring for the OX2 relay module.
Details wiring AC modules with PDN for AC power bus creation.
Explains wiring AC modules with AENT for AC power bus creation.
Shows how to wire for AC relay power using an external source.
Introduces the 120V AC input modules.
Provides the wiring diagram for the 1734-IA2 120V AC input module.
Shows the wiring diagram for the 1734-IA4 120V AC input module.
Introduces the 220V AC input modules.
Details the wiring diagram for the 1734-IM2 120V AC input module.
Introduces the 120/220V AC output modules.
Shows the wiring diagram for the OA2 AC output module.
Details the wiring diagram for the OA4 AC output module.
Illustrates the wiring diagram for the IE2C analog current input module.
Shows the wiring diagram for the IE2V analog voltage input module.
Illustrates the wiring diagram for the OE2C analog current output module.
Details the wiring diagram for the OE2V analog voltage output module.
Illustrates the wiring diagram for the PDN communication interface module.
Shows wiring communication modules for AC only.
Covers the FPD field potential distributor module.
Details DC wiring diagrams for FPD modules.
Shows AC wiring diagrams for FPD modules.
Explains creating a DC power bus using an FPD module.
Details creating an analog power bus using an FPD module.
Covers the EP24DC expansion power supply.
Provides a wiring diagram for 12/24V DC power.
Shows the wiring diagram for 120/240V AC power.
Introduces the CTM and VTM modules.
Shows a sink input wiring diagram example with CTM/VTM.
Illustrates source input wiring diagrams with CTM/VTM.
Details source output wiring diagrams with CTM.
Shows sink output wiring diagrams with CTM/VTM.
Covers the 8 DC In/8 DC Out POINTBlock module.
Shows the wiring diagram for an 8 Input/8 Output module.
Illustrates sink input wiring diagrams for POINTBlock modules.
Details output wiring diagrams for POINTBlock modules.
Covers the 8 DC In/8 Relay Out POINTBlock module.
Shows the wiring diagram for an 8 Input/8 Relay Out module.
Covers the 8 AC In/8 AC Out POINTBlock module.
Illustrates the wiring diagram for the IA8XOA8 AC module.
Introduces relay output modules.
Details the procedure for calibrating analog current input modules.
Details the procedure for calibrating analog current output modules.
Details the procedure for calibrating analog voltage input modules.
Details the procedure for calibrating analog voltage output modules.
Details how to perform calibration using the dialogs.
Guides on performing calibration for output modules.
