CARE

Carel Edc

Critical

MPXPRO — Communication error with stepper driver

Carel Edc: Communication error with stepper driver This fault typically halts operation and needs immediate attention.

Possible causes

E2V driver expansion board not correctly seated or faulty
Internal connection between main board and driver board interrupted

Check steps

Check MX3OPSTP** expansion board for correct seating
Power-cycle the controller; replace board if fault persists

Affected parts

MX3OPSTP stepper driver expansion board
main board

Safety note

Disconnect mains power before working on the controller

Source: Carel resmi servis kilavuzu (bagimsiz cift-dogrulandi) — Carel MPXPRO User Manual +0300055EN — independently verified against rel. 1.5 (05.05.2017), §9.2 Table of alarms, p.57 (not rel.1.6 as originally cited; content of the Edc row is identical): "Edc | Communication error with stepper driver | ON (icon flash) | ON (alarm relay) | automatic (reset)". Adjacent rows in the…

Reviewed by Anıl Güzeldemir — in the refrigeration machine room since 2006, developer of Enthalio.

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