The Allen-Bradley 1756-OF6CI serves as the primary 1756-OF6CI isolated analog output module used to generate six electrically isolated current-loop output signals within ControlLogix systems.

Model and Configuration

The supplied data identifies 1756-OF6CI as a ControlLogix isolated analog output module with six isolated output points. The module is configured for current-loop signal generation and interfaces with the ControlLogix backplane.

No additional suffix decoding is established by the supplied technical information. Therefore, no functional meaning is assigned to undocumented model characters.

Electrical Specifications

Backplane and Output Isolation

The 1756-OF6CI uses the ControlLogix backplane for module power and system communication. The specified backplane current is 250 mA at 5 VDC and 300 mA at 24 VDC.

Six isolated analog output points are provided. The isolation separates output circuits from one another according to the module design, limiting direct electrical interaction between independent current-loop channels.

The maximum stated power dissipation is 4.9 W at 60 deg C. Cabinet thermal calculations should account for this value when multiple modules are installed in the same chassis.

Ordering Information

• 1 x Allen-Bradley 1756-OF6CI isolated analog output module
• No separate power supply is specified as part of the module
• No separate communication adapter is specified as part of the module
• No additional terminal assembly is identified in the supplied data

Installation and Wiring Notes

• De-energize the ControlLogix chassis before module installation or removal unless the applicable system documentation explicitly permits the operation.
• Verify chassis power and backplane loading before adding the module.
• Keep analog output wiring separated from high-voltage switching conductors where practical.
• Use shielded signal wiring where the connected current-loop application requires noise control.
• Ground cable shields according to the plant grounding scheme and the applicable ControlLogix installation documentation.
• Confirm each field connection against the wiring information for the specific 1756-OF6CI installation.
• Do not exceed the electrical limits of the connected current-loop devices.
• Consider the stated 4.9 W maximum power dissipation when evaluating cabinet heat loading.

Frequently Asked Questions

• How many analog outputs does the 1756-OF6CI provide?
  The module provides six isolated analog output points. The supplied data identifies the outputs as current-loop outputs.
• Are the six output points isolated?
  Yes. The supplied product information specifies a six-point isolated analog output configuration for the 1756-OF6CI.
• What is the 5 VDC backplane current?
  The specified backplane current at 5 VDC is 250 mA. This value should be included when calculating ControlLogix chassis loading.
• What is the 24 VDC backplane current?
  The specified backplane current at 24 VDC is 300 mA. Use this value for the applicable ControlLogix power budget.
• What is the maximum power dissipation?
  Maximum power dissipation is specified as 4.9 W at 60 deg C. Cabinet thermal calculations should account for this heat load.
• Does the module have independent power consumption?
  No separate power consumption figure is supplied. The available electrical data specifies backplane current and maximum power dissipation.
• Can output wiring share high-voltage cable routes?
  Analog output wiring should be physically separated from high-voltage switching conductors where practical to reduce electrical noise coupling.
• Does the module provide Ethernet communication directly?
  The supplied specifications identify the unit as a ControlLogix analog output module and do not specify an independent Ethernet interface.