ABB XT7 Operation And Maintenance Manual Download

Page: 21 / 193

ABB | SACE Tmax XT

Management operations | 2 - Maintenance and troubleshooting

2 - Maintenance and troubleshooting

Introduction

Correct maintenance of the unit and connected devices ensures they operate correctly over time.
The maintenance operations must be performed by expert personnel, as required by the safety regulations
and maintenance schedule (see recipients, Safety requirements and Maintenance schedule).
If faults are discovered, find out what is causing them and eliminate them before putting the unit back into
service.

WARNING! Detecting faults must only be managed by (electrically) skilled persons

(IEV 195-04-01: person with relevant education and experience to enable him or

her to perceive risks and to avoid hazards which electricity can create), as it may be
necessary to perform insulation and dielectric tests on part or all the installation

Inspections and general

cleaning

Perform the following inspections:

• check to make sure that Ekip Touch is clean. Remove any dust and traces of other materials with a clean,

dry cloth (use a mild detergent if necessary; a laminate thinner such as Henkel 273471 or Chemma 18 or
equivalent can be used if there is a heavy coating of dirt)

• check that there are no foreign objects near the connectors or terminals

Inspection of Ekip Touch

Perform the inspections described in chapter 1 - Putting into service, including an inspection of the state or
the wiring, modules and accessories:

•  verification of alarms
•  check that the modules (terminal box and external modules) are present and connected
•  check zone selectivity connections
•  check opening and closing actuators

NOTE:

the limitations and notes given for each point in the respective paragraphs are applicable

Maintenance schedule

The frequency with which Ekip Touch maintenance is scheduled differs, depending on the conditions in the
installation site:

Standard environments

Dusty environments
(level of dust measured > 1mg/m3)

Frequency of
maintenance

One year or 2000 operations or after
tripping due to short circuit

Every six months or 1000 operations or
after a short-circuit trip

By activating and using Predictive Maintenance in ABB Ability (EDCS) on the specific switch, you can suggest
a different maintenance frequency.

ink

)

Alarms displayed and

suggestions

A list of faults that may appear on the Ekip Touch display is given below along with suggestions on how to
resolve them:

Signal

Suggestions

Numerical alarm
(e.g. 30002)

Internal error; contact ABB if this typoe of error occurs

Battery low

Change the battery (See 1SDH001000R0509 kit sheet)

Local bus

Unit on with auxiliary supply, Local Bus parameter enabled but connection to modules
not present, incorrect or communication lost (for more than five seconds); check:
• connection and powering of modules in terminal box or external
• that the moldules connected are compatible with Ekip Touch

CB undefined

Check the circuit-breaker status signal contacts

Trip fail command
(BF)

CB has failed to open and/or current still present after a TRIP command: comply with
the procedure proposed in the next chapter 'Faults, causes and remedies'

Continued on the next page