Specifications
11
Depending on needs, it is necessary to control some or all functions of a starter. The principal function groups
are:
Motor control performance
Control on power, torque, speed, reversing, start time, and risk of jamming are required.. Next table summarizes
the main characteristics of pumps found in process applications.
Motor protection
Its purpose is to avoid operating motors in abnormal conditions which could result in negative events such as:
overheating, premature ageing, destruction of electrical windings, damage to coupling or gear box,.
Motor metering and monitoring functions
The purpose of implementing measurement devices is to ensure continuous supervision of motor operating
conditions. The collected data can be used with great benet on improving energy efciency and extending
motor lifetime.
Monitoring functions allow you to control costs, schedule maintenance operations and keep historical
information for legal requirements.
The table on the next page presents a synthesis of different device functions.
Control starter
functions
2-Selection phase
Selecting motor control devices