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| EN
EIOM v2018.04
Figure 3.4.1.1 – PM motor with VSD integrated on motor
Built-on frequency controller and PM motor connection diagram
Figure 3.4.1.2 Built-on frequency inverter and PM motor connection diagram:
(1) – PM motor; (2) – Frequency converter; (3) – Remote control (hand terminal).
Built-in protection
If the temperature inside frequency converter e95°C, the frequency converter will attempt to reduce its internal heat generation by reduc-
ing motor speed (rpm).
Frequency converter has built-in current limitation for the protection of motor and cables and cannot therefore supply more current than it is set to.
In the event of lacking phase on the supply input, the frequency converter will reduce speed and activate a non-critical alarm.
The frequency converter motor output terminals are short circuit protected against phase-to-phase short circuiting.
Alarms
Frequency converter has a built-in alarm monitor, which monitors optimal fault-free operation and triggers an alarm if operating or performance
problems are observed.
• ”Critical” alarms stop the motor.
• ”Non-critical” alarms reduce motor performance.
• The built-in alarm monitor stops the frequency converter.
• If the alarm situation passes, the alarm is automatically reset and frequency converter restarted.
• If the maximum number of restarts (5 times/60 min) is exceeded, the alarm must be reset manually. The alarm can be reset by means of a
Modbus command.
• The alarm is automatically reset if the power is disconnected for longer than 60 seconds.
• Alarms can be read via Modbus.
Maintenance
Frequency converter is maintenance free under normal operating conditions and load profles.
• The cooling fns must be kept free of dust, dirt and other foreign matter so that air can pass freely over them. Deposits of dust, dirt or other foreign
matter on and between the cooling fns will prevent cooling of the frequency converter and thus impair performance.
• The cooling fns may become very hot. (Max. +95°C under normal operating conditions).
• Frequency converter cannot be repaired on site. Never attempt to repair a defective unit. Contact your supplier to obtain a replacement.
