Allen-Bradley PN-43652 Control Board

Name: Allen-Bradley PN-43652 Control Board
Brand: Allen-Bradley

Model: PN-43652

Brand Allen-Bradley

Series Pending

Model PN-43652

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Technical Dossier

Product Details And Specifications

Allen-Bradley PN-43652 Series Technical Notes

The Allen-Bradley PN-43652 Control Board is a core hardware component deployed across Allen-Bradley's legacy drive and motion control platforms. It has accumulated significant installed base in heavy industrial environments including petrochemical refineries, nuclear auxiliary systems, pulp and paper mills, and continuous-process manufacturing lines. The board functions as the primary control interface within its host drive chassis, managing gate firing logic, feedback signal conditioning, and fault diagnostics. Its long service record in 24/7 continuous-duty applications has made it a critical spare parts target for maintenance engineers operating aging AB drive systems.

The Evolution of PN-43652 Architecture

The PN-43652 board originates from Allen-Bradley's 1300 and 1395 series DC drive platforms, which were introduced in the 1980s and remained in active production through the late 1990s. Early revisions of the board used through-hole component construction with discrete analog signal chains for speed reference and current feedback. Mid-generation revisions introduced surface-mount components on the analog front-end while retaining the original backplane connector pinout, preserving backward compatibility within the same drive chassis generation.

By the early 2000s, Rockwell Automation (which had absorbed Allen-Bradley) began transitioning customers toward the PowerFlex 700 and PowerFlex 755 platforms. The PN-43652 and its host drive family entered the mature/end-of-life phase. Rockwell officially discontinued active production of the 1395 series drives, making the PN-43652 a legacy-only component. Facilities that have not yet migrated continue to require this board for corrective maintenance, as no direct plug-in replacement exists from the OEM. Cross-compatibility is limited: the PN-43652 is not interchangeable with boards from the 1336 PLUS or 1336 IMPACT families without chassis-level modification.

PN-43652 Full Catalog & Functionalities (SKU List)

The following SKUs represent the documented range of Allen-Bradley control and interface boards associated with the 1395 DC drive platform and directly adjacent PN-series components. Each entry reflects a distinct functional role within the drive system architecture.

PN-43652: Main control board, 1395 DC drive; gate firing and speed regulation logic
PN-43652A: Revision A of main control board; updated analog filter network
PN-43652B: Revision B; improved EMI shielding on feedback input stage
PN-43652C: Revision C; surface-mount rework on DAC output section
PN-43651: Regulator board, 1395 series; current loop and IR compensation
PN-43653: Field current regulator board; armature/field coordination logic
PN-43654: Power interface board; SCR gate pulse distribution
PN-43655: Analog I/O expansion board; ±10V reference signal conditioning
PN-43656: Digital I/O interface board; 24VDC discrete input/output logic
PN-43657: Encoder feedback board; quadrature input, 5V/12V compatible
PN-43658: Communication adapter board; DH+ network interface for 1395 chassis
PN-43659: Fault memory board; non-volatile fault log storage module
PN-43660: Power supply board; ±15V and +5V regulated DC for control logic
PN-43661: Operator interface board; keypad and display driver for local HMI
PN-43662: Isolation amplifier board; galvanic isolation on analog feedback channels
PN-43663: Tachometer input board; analog DC tach signal scaling and filtering
PN-43664: Overspeed detection board; hardware trip relay for runaway protection
PN-43665: Armature current feedback board; Hall-effect sensor signal processing
PN-43666: Serial communications board; RS-232/RS-485 port for drive parameter access

Quality Control for the PN-43652 Range

Each PN-43652 board processed by DriveKNMS undergoes a structured inspection and functional verification protocol before dispatch. Visual inspection covers solder joint integrity, capacitor condition (ESR measurement on electrolytic types), and connector pin seating. Boards are then powered under controlled bench conditions using a regulated DC supply matched to the original drive's internal rail voltages (±15V, +5V).

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