Maintenance 7 - 7
Removing and Replacing the Drive in a Bypass Unit
Drive Replacement
If possible, save the existing drive programming by copying it to the memory in the keypad/operator via parameter o3-01.
When it has been determined that a Drive fault requires a Drive replacement (see Chapter 6), there are several steps required
before the Bypass will be operable again. First, a new Drive must be ordered. Begin by determining the model number Drive
that is in the Bypass assembly.
Drive Model Number:_____________________________
Warranty status determines whom you should contact to obtain a new Drive.
For a Bypass unit that is still under warranty, begin by contacting Yaskawa Technical Support: 1-800-YASKAWA (927-5292),
press 2 for Inverter and Drive Products, then 5 for technical support. Technical support may also be reached through e-mail at
DriveSupport@yaskawa.com.
A Yaskawa distributor should be contacted to replace a Drive that is no longer under warranty.
When the Drive arrives, verify that the Drive is the correct model number.
Removing the Drive
Before installing the new Drive, the old Drive must be removed from the Bypass assembly. As a safety precaution, disconnect
the AC power line coming into the main Bypass disconnect or circuit breaker to ensure that no power is in the Bypass unit.
Check the Drive DC Bus voltage to be sure it is at a safe level before working inside the Bypass enclosure. DC Bus voltage can
be monitored by the CHARGE status indicator LED, near the power terminals. Be sure the LED is extinguished before pro-
ceeding. Another method is to measure the DC voltage across terminals “+1” and “-” on the power terminal block.
Fig 7.4 DC Bus CHARGE STATUS Indicator
Terminal for DC
Bus Voltage
DC Bus CHARGE Status Indicator LED
25 HP (480V) and Below
DC Bus CHARGE
Status LED
30 HP (480V) and Above
Summary of Contents for E7LBA002
Page 1: ...E7L Drive Bypass Technical Manual Model E7L Document Number TM E7L 01 ...
Page 8: ...Introduction vi Notes ...
Page 12: ...Table of Contents x Notes ...
Page 54: ...Electrical Installation 2 22 Wiring Diagram ...
Page 55: ...Electrical Installation 2 23 ...
Page 87: ...Start Up and Operation 4 9 Notes ...
Page 202: ...Diagnostic Troubleshooting 6 30 Notes ...
Page 248: ...Capacity Related Parameters B 6 Notes ...
Page 279: ...Communications D 27 Note ...
Page 280: ...Communications D 28 ...
Page 292: ...Spare Parts F 6 ...
Page 304: ...Index 12 ...
Page 305: ......