User Manual Instruction Manual

4-4 GV6000 AC Drive User Manual
4.1.3 Common Bus/Precharge Notes
The following notes must be read and understood. Also refer to page 3-5 for additional
common bus information.
Important Application Notes
1. If drives without internal precharge are used (Frames 5 and 6 only), then:
a. precharge capability must be provided in the system to guard against
possible damage, and
b. disconnect switches Must Not
be used between the input of the drive and
a common DC bus without the use of an external precharge device.
2. If drives with internal precharge (Frames 0-6) are used with a disconnect switch to
the common bus, then an auxiliary contact on the disconnect must be connected
to a digital input of the drive. The corresponding input (parameter 361-366) must
be set to option 30, “Prechage Enable.” This provides the proper precharge
interlock, guarding against possible damage to the drive when connected to a
common DC bus.