Product Overview

The Honeywell 620-0036​ is the AC-to-DC processor power supply module for the Honeywell IPC 620 programmable controller family, serving processors such as the IPC 620-20/25 and IPC 620-30/35 and their associated racks. It performs two jobs that no other module in the rack can cover. First, the Honeywell 620-0036​ converts incoming facility AC into the regulated DC rails that are distributed across the backplane to the CPU, communication cards and I/O modules. Second, it houses a dedicated lithium battery compartment that holds up the processor’s volatile memory and register data when AC is lost entirely, so a power failure does not become a program reload.Mains flexibility is handled in hardware rather than electronics. The Honeywell 620-0036​ accepts either 115 VAC or 230 VAC, selected by a physical jumper or switch on the module, with an input window of 85-132 VAC on the 115 V setting and 170-250 VAC on the 230 V setting, across 47-63 Hz. This means the same part can be deployed in plants on different regional power standards without an external transformer, though the setting must be confirmed before energising, because applying 230 V with the module strapped for 115 V will destroy the internal surge suppression stage.Output is specified at +5 V DC at 8 A for logic, with ±15 V DC at 600 mA for analogue and op-amp circuits, within a maximum consumption of 95 VA. Internal overload protection throttles output during a backplane fault and recovers automatically once the fault clears.The point worth emphasising to any buyer: the Honeywell 620-0036​ powers the PLC rack, CPU and internal I/O only. It is not a field power supply, and connecting two-wire transmitters or actuators to it will pull the backplane down and reset the entire rack. Field-side 24 V must come from a separate dedicated supply.

Technical Specifications

Main Features and Advantages

Selectable mains input for global deployment: The Honeywell 620-0036​ accepts both 115 VAC and 230 VAC through a hardware jumper or switch, so one part number covers installations on either regional standard. For multinational plants standardising spares across sites, that removes an entire variant from the inventory and eliminates the external step-down transformer a fixed-voltage supply would require.Integrated memory retention: The built-in lithium battery compartment is the feature that separates this from a generic industrial PSU. When AC fails completely, the Honeywell 620-0036​ continues to hold the processor’s volatile memory and register data, so the ladder logic program and process values survive the outage. On a continuous process, the alternative — reloading a program and recovering from a cold start — costs far more than the module does.Conditioned power for sensitive cards: Factory mains carries transients from contactors, drives and switching events. The internal surge suppression stage in the Honeywell 620-0036​ absorbs high-voltage spikes before they reach CPU and I/O semiconductors, and the regulation stage holds the DC rails steady through brief mains dips. Downstream card life improves measurably as a result.Overload protection that recovers automatically: If the backplane draws excessive current, the module throttles its output rather than failing destructively, then resumes normal operation once the fault clears. That behaviour protects both the supply and the rack, and it means a transient fault does not automatically become a component replacement.Sized to the rack and nothing else: With +5 V at 8 A and ±15 V at 600 mA, the Honeywell 620-0036​ is matched to the real load of an IPC 620 rack. It is not intended to drive field-side sensors and actuators, and understanding that boundary prevents the backplane collapse that follows when external loads are incorrectly paralleled onto it.