6-10
SP600 AC Drive User Manual
When using the braking resistor connections, parameter 163 (DB
Resistor Type) must be set to one of the following selections:
• 0 = Internal: Refers to DB plate-style resistor options kits that can
be mounted directly to the heatsink chassis of the drive (for
example, 6SP2-DB1-A).
• 1 = External: Refers to externally-mounted resistors. These
could be panel, cage, or other type of mounting, and are not
specifically designed by Rockwell Automation to mount directly to
the SP600 AC drive.
!
ATTENTION: AC drives do not offer protection for
externally mounted braking resistors. A risk of fire
exists if external braking resistors are not protected.
External resistor packages must be self-protected
from overtemperature, or the protective circuit
shown in figure 6.8, or an equivalent, must be
supplied.
ATTENTION: Equipment damage may result if a
drive-mounted (internal) resistor is installed and
parameter 163 is set to 1 (External Res). Thermal
protection for the internal resistor will be disabled,
resulting in possible device damage
Figure 6.8 – Protective Circuit for External Resistor Packages
Power On
R (L1)
S (L2)
T (L3)
Power Source DB Resistor Thermostat
Power Off
M
M
(Input Contactor) M
Three-Phase
AC Input
AC Drive
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