Parker AH387775U001 Encoder Feedback Card - Complete Technical Guide for Industrial Automation

8. listopad 2025

Historical parts record: Photos and notes below belong to this record. Confirm the offered unit’s full model, condition and available test evidence before ordering.

What is the Parker AH387775U001 feedback card?

The AH387775U001 is a Parker drive feedback card — the small green board that sits inside a Parker servo drive and conditions the encoder signal for the power stage, built around the Parker RD3852 feedback ASIC (white-labelled RD3852 / 45U017 / B026 / HU81) with an L6538 gate-driver IC, its own ferrite supply choke (Parker part CO38842215.8234) and a relay on board. The board carries a white barcode label — AH387775U001, B 23 12 13/225 43955, a December 2023 build — and its I/O side is a six-way green screw terminal (LIANXIN LX15EDG), with a two-by-six pin header along the top edge and the circular cut-out for the drive's feedback connector. This record covers five of them, all new and from the same build (two carry QC circle stickers 64 and 65, one still sealed in its anti-static bag), received new with a one-year warranty; they passed through the Koeed warehouse on 4 November 2025 (about 1 kg per the record), and the six photos and video below show them as received.

2 min readContent reviewed 6 October 2026

Part details

Parker AH387775U001 feedback card, per board label and record
Field	Value
Brand	Parker (drive feedback card; internal board code CO38842215.8234 on the choke label)
Part number	AH387775U001 (white barcode label: B 23 12 13/225 43955)
Function	Encoder feedback conditioning card for Parker servo drives
Key components	Parker RD3852 feedback ASIC (45U017 / B026 / HU81), L6538D0TTR gate driver, 105J100 film cap, ferrite choke, relay, 2×6 pin header
Connectors	Six-way green screw terminal (LIANXIN LX15EDG); circular feedback-connector cut-out; 2×6 header
Build	2023-12 (label); QC circle stickers 64 / 65; ENIG gold finish
Quantity	5 cards (one factory-sealed in an anti-static bag)
Condition	New, unused (per intake record); one-year warranty
Weight	About 1 kg per record (the set)
Intake recorded	4 November 2025

Scroll sideways to see the full table.

Swap notes

A feedback card fails in a characteristic way — the drive powers up, the motor sits still, and the drive reports an encoder or feedback fault even though the motor cable checks out. Swapping the card is the fast test: seat the board on its standoffs, land the six terminals, mate the feedback connector through the circular cut-out, and bridge the pin header to the drive's main board. Match the full AH387775U001 number and the RD3852 chip marking when ordering, since Parker revised this card across drive generations. All five boards here are one 2023-12 build with identical RD3852 silicon — fit them as a set and the spares behave predictably.

Photos and video

All images below are original warehouse photos of the exact cards covered by this record, taken before dispatch. Click any photo to view it full size.

Card front with RD3852 — Card front: the white RD3852 / 45U017 / B026 / HU81 label on the ASIC, choke with its CO38842215.8234 tag, yellow film cap, relay and the green terminal block.

Card back with barcode label — Card back: the AH387775U001 barcode label (B 23 12 13/225 43955) beside the terminal block, solder side bright and factory-clean.

Back and terminal detail — Back, second angle: the AH387775U001 label, the green terminal block below, and the two standoffs.

Front and back pair — Front and back together: the RD3852 side and the solder side of one card, with a second card's terminals in frame.

Cards side by side: identical layout across the set — same silicon, same terminal block, same build.

Five cards and sealed bag — The full set: five cards laid out plus one still sealed in its anti-static bag with the QC 64 circle — the complete delivery as received.

Inspection video of this feedback card set, recorded at the Koeed warehouse on 4 November 2025.

For the drive-side electronics from the same shelf, see the Kinetix 350 control board 605-510L — another servo feedback/communications board, documented the same way.