42
Gem6K Hardware Installation Guide
VBUS+
VBUS–
L2/N
L1
VBUS+
VBUS–
L2/N
L1
VBUS+
VBUS–
L2/N
L1
VAC
GV6K-U3/U6/U12/H40*
GV6K-U3/U6/U12/H40*
GV6K-U3/U6/U12/H40*
Use a single point
safety earth
Connect
to GPDM,
if necessary
Not shown: 3-phase
AC connections for
GV6K-H40
*
Fuses
Sharing the Power Bus
If excess regenerated energy causes an overvoltage or regeneration fault, you can
connect the Gemini Power Dissipation Module (GPDM) to the drive’s V BUS
±
terminals. See
Regeneration Protection
below for connection instructions and
more information about the GPDM.
NOTE: Because the GV6K has a current inrush limiter, we recommend that you
do not add additional bus capacitance to V BUS+ and V BUS-.
Regeneration Protection
The following sections describe regeneration protection for GT6K and GV6K
drives. The Gemini Power Dissipation Module is also described.
Regeneration with GV6K-L3n/H20n/H40n; GT6K-L5/L8
GV6K-L3n, GV6K-H20n, GV6K-H40n and all GT6K drives have internal
circuitry to protect them from
regeneration
—energy from the load during decel-
eration. Excessive regeneration can cause:
•
Regeneration Fault (if regeneration occurs for an extended period of time)
•
Overvoltage Fault – GV6K Only (see
Overvoltage Protection in Appendix A
Specifications)
Specifications for regeneration protection are:
Maximum
Activation Conditions
Drive
Dissipation (watts):
Pulse Energy
Turn on:
Turn off:
GT6K-L5/L8
8W continuous
1.3 KJ
218VDC
211VDC
500W peak
GV6K-L3n
8W continuous
1.3 KJ
200VDC
193VDC
500W peak
GV6K-H20n
25W continuous
6 KJ
396VDC
385VDC
(100W continuous at 40
°
C)
6KW peak
GV6K-H40n
150W continuous
9 KJ
396VDC
385VD
9KW peak
Results of Fault: Latched fault; power to motor is turned OFF; fault output is activated
LEDs: Left = illuminated RED; Right = off
All temperatures in moving 50
°
C ambient air, unless otherwise noted.
