Rexroth 1070077920-GA1 Spare Part

Technical Specifications

Model:1070077920-GA1

Brand:Rexroth

Product type:Servo drive main control board

Power supply:24 Vdc,19.2~28.8V tolerance

Control function:Servo closed-loop operation,current/position loop calculation,parameter storage,hardware self-diagnosis,fault indication

Communication:Ethernet,system internal bus

Mounting:Plug-in installation inside servo amplifier

Operating temperature:-10~55℃

Storage temperature:-20~70℃

Relative humidity:5~95% non-condensing

Max working altitude:2000m

Weight:0.34kg

Dimension:190mm85mm35mm

Certification:CE

Protection class:IP20

System compatibility

1070077920-GA1 belongs to Rexroth servo drive system family,matched with power module,servo motor and encoder.Widely applied in automation assembly,press-fit and material handling workstations.This is a discontinued legacy spare part for equipment maintenance replacement.

Function

1070077920-GA1 serves as the core control board of Rexroth servo amplifier.It executes current,speed and position closed-loop algorithm for servo motor.It stores drive parameters and motor characteristic data.It communicates with upper PLC via fieldbus to receive motion commands and feedback operating status.It detects drive abnormal signals and triggers protection logic to avoid component shturl.cc acts as core logic control component for Rexroth servo drive unit.

Installation

Install 1070077920-GA1 into servo drive designated slot and lock fasteners.Complete bus and signal wiring according to wiring drawing.Check 24V power polarity and equipment grounding before power-on.

Interface

‑24Vdc power input terminal

‑Encoder signal terminal block

‑Fieldbus connector

‑Status and fault LED indicator

Circuit feature

Built-in ESD and surge suppression circuit,signal galvanic isolation design,strong anti-interference performance for workshop industrial environment.

Feature

1070077920-GA1 is obsolete Rexroth spare part.Typical failures:drive cannot be initialized,encoder signal error,communication dropout,connector pin oxidation.Inspect circuit board and connector pins before replacement.This board must match corresponding Rexroth power module and servo motor,direct substitution without inspection is not recommended.

Diagnostic

When communication failure,signal loss or internal hardware fault occurs,the module triggers protection and lights up fault LED.

Built‑in function:Servo closed-loop motion control,parameter storage,status monitoring,self-diagnosis and fault alarm,used as Rexroth servo drive system spare replacement.

Product Brief

1070077920-GA1 is Rexroth old servo drive main control board for automation workstation.Confirm compatibility with matched power stage and servo motor before ordering.ESD protection required during handling and installation.