INSTALLATION
28
| MVE User Manual (710-17074-00G)
6.15
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.
6.16
Phase arm power supply switching
The 24 VDC power supply to each phase arm must be switched via a control relay operated from output 43, 44 on the power
interface board. Refer to
Internal Panel Wiring
on page 27.
The control relay (KPA) must have a contact switching rating > 9A @ 24 VDC.
6.17
Approved switch mode power supply units
The following 24 VDC switch mode power supplies are tested and approved for use with MVE:
1.
Delta power supply DRM-24V480W1PN
2.
LUTZ power supply CPSB1-480-24
CAUTION
Use of other power supplies is at the risk of the installer and/or end user. AuCom accepts no responsibility for damage
or incorrect operation resulting from the use of unapproved power supplies.
