The Honeywell 900B01-0101 is a 4-channel isolated analog output module engineered for the ControlEdge HC900 controller platform. This module provides four precision analog output channels capable of delivering current signals up to 21.8 mA, which can be fully scaled by the user on a per-channel basis. It converts digital system registers into continuous electrical signals to modulate field equipment such as control valves, actuators, and variable speed drives under demanding process conditions.
Features
Per-Output Scaling: Enables individual configuration and scaling of each channel to any specific current span within its full physical range.
Failsafe Management: Supports user-specified failsafe output values per channel to guarantee predictable, secure field operation if system communication is lost.
Synchronous Updates: Ensures that all analog output signal updates are executed in direct synchronization with the controller's main logic execution cycle.
Rate-of-Change Limiting: Allows programmable ramp limits to be applied to outputs, preventing sudden signal spikes and protecting sensitive mechanical field actuators.
Dual-LED Diagnostics: Features a green blinking light-emitting diode for backplane scanning confirmation and a dedicated red indicator to instantly signal active module or channel faults.
Specifications
Module Type: Galvanically Isolated Analog Output Module (AO)
Number of Channels: 4 isolated current output channels
Output Signal Range: 0 mA to 21.8 mA (user-configurable and scalable per point)
Maximum Drive Load: Supports up to 750 Ω maximum loop impedance at full scale
