Service and maintenance checklist

SEW‑EURODRIVE: Data recording/processing

Date

 

Name, department

 

Information about the customer

Company name, contact person

 

Customer number

 

Complaint number/GCom

 

Service case number

 

Industry/operating location of the customer:

e.g. automotive, food, transport and logistics, raw material processing (stone, wood, etc.)

 

Information about the motor and its options

Type designation

 

Serial number(s) of the affected drives

 

Delivery date

 

Control of the motor (frequency inverter (SEW-EURODRIVE, third party)/supply system)

 

Brake control?

 

FS motor option available (FS logo)? If so, which one?

 

Are other options or retrofits available? If so, which ones?

 

Grounding concept of the motor: How is the grounding carried out?

 

Description of the electrical environment of the motor (other drives, switches, contactors, robots, safety technology, etc.)

 

Information about the encoder

Type (see labeling)

 

Part number (see labeling)

 

Batch number (see labeling)

 

Delivery date (if different from the motor)

 

Are other encoders/sensor components than the complained object in use? Are there any known problems with these other systems?

 

Fault description

Is there a defect or is there a functional failure without a component defect?

 

Explanation: How does the fault manifest itself?

 

Measurements: Attach measuring results indicating the fault, if available.

 

Include photos/videos of use case/fault case

(encoder system, cabling, system, motor, etc.)

 

Repeated fault in this application? Details on frequency?

 

Information about operating conditions

Supply voltage

  • Nominal value and tolerance
  • Number of additionally connected units to the encoder, type of units

 

 

Cable length

 

Cable types

  • Basic technical data (cross section, material, etc.)
  • Shielding? If so, what kind?
  • Are twisted pair signal cores present?
  • Connector types?

 

Cable routing

  • Description of the routing
  • Distance to power cables
  • Are cable ducts present?

 

Vibrations and shocks, internal to the motor

  • Is a brake present?
  • If so, what type?

 

Vibrations and shocks, external to the motor

  • Total vibration of the drive?
  • Vibrations through the motor shaft?

 

Thermal operating conditions:

Operating temperature range

 

Thermal operating conditions:

Course/temperature gradient during use?

 

Humidity values?

 

Humidity:

Course/gradient during use?

 

Media in the environment

  • Is the encoder exposed to special media such as cleaning agents?
  • Course of exposure (permanent, 1x per week, 10 min, etc.)

 

Information about operating states in the application

Start of the system

  • Course of the supply voltage
  • Chronological order/profile of connecting the sensor technology and power of the drive
  • Other special features?

 

Ongoing operation of the system

  • Course of the supply voltage
  • Chronological order/profile of connecting the sensor technology and power of the drive
  • Other special features?

 

Switching off the system

  • Course of the supply voltage
  • Chronological order/profile of connecting the sensor technology and power of the drive
  • Other special features?

 

Encoder evaluation

Evaluation device, type

 

Have other units been evaluated on this device? If so, which ones?

 

What load current is present through evaluation inputs?

 

What query cycle time/polling rate is there for encoder information?

 

In the case of incremental encoders: Are all signal tracks evaluated, or just individual ones? If applicable, which signal tracks?

 

Other?

Are there any other occurrences that may be significant for the functional failure or defect? What is your presumption regarding a cause?