HSD35102480E Incremental Encoder with Dual Isolated ABZ Output

For HSD35102480E, EncoderWorks can provide a custom compatible replacement solution for heavy-duty hollow-shaft incremental feedback systems where the key checks are 1024 PPR counter scaling, dual isolated differential ABZ signal matching, 5/8" bore fit, and anti-rotation mounting control. This version should not be treated like HSD351024809, because it changes from a single 4469 5–15 V ABZ output to dual isolated 7272 differential ABZ outputs for two independent feedback paths. Typical production lead time: 15 working days.

This model belongs to the HSD35 heavy-duty optical incremental encoder series. In the HSD35102480E configuration, the encoder provides 1024 pulses per revolution, a 5/8" electrically isolated hollow bore, no specified tether option, and dual isolated differential ABZ outputs equivalent to the code 7 output format. Replacement work should focus on both output channels, A/A-, B/B-, Z/Z- wiring, receiver compatibility, quadrature decoding mode, index recognition, hollow-shaft clamping, anti-rotation method, and 10-pin connector assignment.

System Limits

The main electrical limit is dual isolated ABZ compatibility. If one output is used by the drive and the other by a PLC, monitor, or safety circuit, both channels must preserve the same pulse count, A/B phase direction, Z index behavior, and 5–26 V differential level. A single-output replacement may run one device but leave the second feedback path unavailable.

The second limit is counter frequency margin. At 1024 PPR, the input load depends on shaft speed and x1, x2, or x4 quadrature decoding. The counter should be checked against the 200 kHz data and index frequency limit, A/B phase tolerance, and Z pulse recognition.

The mechanical limit is the 5/8" hollow-shaft clamp and the missing tether selection. The bore must fit the shaft without forcing the clamp, and the installation must still prevent encoder housing rotation without applying side load to the bearings.

Wiring & Installation

Before removing the existing encoder, record how both isolated output channels are used. Check the 10-pin connector wiring for Common, Signal A, Signal B, Signal Z, Vcc, Signal A_, Signal B_, and Signal Z_. Confirm that the controller system expects dual isolated 7272 differential ABZ feedback rather than single 4469 output, 5V output, AB-only feedback, or single-ended feedback.

After installation, rotate the shaft slowly and confirm that A leads B for clockwise shaft rotation when viewed from the clamp end. Then check 1024 PPR scaling, Z index position, direction trend, both output-channel responses, clamp stability, housing anti-rotation behavior, and counter stability at operating speed.

Custom Compatible Solution

EncoderWorks can configure the replacement around the installed drive and counter system:

• Match 1024 PPR dual isolated differential ABZ output and 7272 driver behavior
• Adapt the 5/8" electrically isolated hollow bore, clamp fit, and anti-rotation requirements
• Verify A/B phase direction, Z index behavior, quadrature decoding mode, and both output-channel assignments
• Review 10-pin connector wiring, shield grounding, cable routing, shaft isolation, and housing movement

Key Data