Operation Mode Selector Switch (S1) - AuCom MVE Series User Manual

5.4

Operation mode selector switch (S1)

The MVE can soft start the motor, or can DOL start the motor with or without protection. Use the operation mode
selector switch (S1) to select the start mode.
SST position (soft start)
• The customer's external control signals start and stop the motor.
• The MVE performs a normal soft start.
All soft starter protections are active.
•
Relay outputs on the soft starter's power interface board control the line, bypass and PFC contactors.
•
DOL+ position (DOL with protection)
The customer's external control signals start and stop the motor.
•
• The line and bypass contactors start the motor DOL.
• All soft starter protections are active.
• Relay outputs on the soft starter's power interface board control the line, bypass and PFC contactors.
NOTE
This mode allows the motor to be started when there is a fault with one of the soft starter phase arms. The
controller and power interface board must be in healthy working state.
DOL position (DOL without protection)
The customer's external control signals start and stop the motor.
•
• The line and bypass contactors start the motor DOL.
• All soft starter protections are bypassed.
• The line and bypass contactors are controlled by the start and stop control signals.
• The PFC contactor (if used) must be controlled by a separate manual switch.
NOTE
This mode allows emergency operation of the motor when there is a major failure of any soft starter
component. Back-up fuses provide short circuit protection. Additional protections such as motor protection
or RTD overtemperature may be available if separate protection equipment is installed.
INSTALLATION
MVE User Manual (710-17074-00H) |
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