Fwd Run
Drive Enable-Customer
Safeties
Override (Smoke Purge)
Drive/Bypass Select
BP Drive Relay Contact
Output
BAS Interlock
BP Bypass Relay Contact
Output
BP BAS Interlock Contact
Output
Output Frequency
L2-03
Speed
Search
Occurs
L2-03
L2-03
Bypass Run
Figure 1.79 BAS Interlock
Transfer on Fault
When the bypass functionality is enabled and the BP Auto Transfer on Fault Enable (S4-01) is enabled, the drive can perform
a transfer to bypass upon a drive fault. If the drive is running when a fault occurs, an immediate transfer to bypass will occur.
Refer to Immediate Transfer to Bypass on page 144 for details.
The drive will keep the BP Bypass Relay Contact closed until the run command is removed, the BP Customer Safeties is
opened, or the BAS Interlock Input MFDI is programmed and opens. When the fault is manually reset, the drive performs the
switch. Refer to Transfer to Drive Operation on page 144 for details.
This functionality also requires that Auto-Restart Retries is set to zero (L5-01 = 0) to ensure that the drive does not attempt
an automatic fault retry.
1.11 S: Special Parameters
YASKAWA SIEP YAIZ1U 03B YASKAWA AC Drive – Z1000 Programming Manual
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1
Parameter Details
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