1-30 Functional Description
7000-TD002A-EN-P – September 2007
Synchronous Transfer
(cont.)
PF7000
MOTOR
Input contactor Output contactor
Bypass contactor
Bypass bus
Input bus
PF7000
CONTROL
PF7000
MOTOR
PF7000
CONTROL
Figure 1.11 – A typical synchronous transfer set up using PF7000
For single motor applications, the drive is capable of performing
synchronous transfer without the need for a Programmable Logic
Controller (PLC). The command to close the bypass and output
contactor and their status are realized using the digital IO on ACB.
The run time commands Request to Bypass (Synch) and Transfer to
drive (De-synch) are wired to the standard XIO board. Synchronous
transfer will not be performed if the phase sequence of the bypass
voltage is not positive.
A T T E N T I O NA T T E N T I O N
If the phase rotation and phase angle of the
bypass voltage compared to the drive input
voltage are not correct, damage may occur to the
drive, motor, couplings and driven equipment if a
transfer to bypass is attempted.
To Next Page
Loading...
Need help?
General
