Products Overview
The FBM242 Discrete Output Module features 16 discrete output channels, designed for external
power sourcing and rated up to 2 A at 60 V dc. Compatible termination assemblies (TAs)
accommodate diverse load requirements: discrete outputs for 2 A/60 V dc loads, relay outputs (120 V
ac/125 V dc or 240 V ac), and relay outputs integrated with power distribution and fusing capabilities.
Each output channel is fully isolated from other channels and ground, ensuring reliable operation and
signal integrity.
Functioning as a critical interface between the control processor and field devices, the module
transmits electrical output signals seamlessly while supporting ladder logic within its digital I/O
application program. Additionally, it offers a Fail-Safe Configuration option for outputs, enhancing
operational safety and system resilience in industrial control environments.
Key features of the FBM242 modules
1.Equipped with 16 discrete output channels for versatile industrial control applications.
2.Broad voltage compatibility for discrete output signals:
●15 to 60 V dc
●120 V ac / 125 V dc
●240 V ac
3.Robust isolation design: Each input and output features galvanic isolation; supports group isolation
when paired with external excitation.
4.Rugged construction tailored for Class G3 (harsh) environment enclosures, ensuring durability in
demanding industrial settings.
5.Flexible program execution: Runs Discrete I/O or Ladder Logic programs with configurable options
including:
●Input Filter Time
●Fail-Safe Configuration
●Fail-Safe Fall-Back
●Sustained or Momentary Outputs
6.Compatible with a range of Termination Assemblies (TAs) incorporating:
●Current-limiting devices
●Fuses
●Relay outputs (with external power sourcing, fusing, and power distribution)
●Solid-state outputs
●Redundant power distribution
Fieldbus Communication Capability
A Fieldbus Communications Module or Control Processor interfaces with the redundant 2 Mbps
module Fieldbus utilized by FBMs. The FBM242 is designed to accept communications from either
path (A or B) of this redundant 2 Mbps Fieldbus. In the event that one path fails or undergoes a
system-level switchover, the module seamlessly continues communication via the active path,
ensuring uninterrupted data transmission for industrial control operations.
Functional Specifications
| Output Channels |
●Quantity: 16 discrete output channels, fully isolated from each other and ground. ●Applied Voltage Range: 15 to 60 V dc (maximum). ●Load Current: 2.25 A (maximum) per channel. ●Load Current-In-Rush: 8 A (maximum) for 20 ms per channel at 30°C; 6.4 A (maximum) for 20 ms per channel at 70°C. ●On-State Voltage Drop: 0.2 V (maximum) at 2.25 A. ●Off-State Leakage Current: 0.1 mA (maximum). ●Inductive Load Requirements: A protective diode or metal oxide varistor (MOV) may be required across inductive loads (diode for dc loads, MOV for ac loads). ●Channel Isolation: Galvanic isolation between all channels and earth (ground); withstands 600 V ac for 1 minute between any channel and ground, or between any two channels. |
| Power Requirements |
●Input Voltage Range (Redundant): 24 V dc ±5% (upper) / -10% (lower). ●Power Consumption: 3 W (maximum) at 24 V dc. ●Heat Dissipation: 6.5 W (maximum) at 24 V dc (with all outputs at 1.5 A each). |
