Copley Controls Xenus Plus Series User Manual page 63

Xenus Plus User Guide
Internal Regen Resistor
If too much energy is added to the capacitor bank, the voltage rises to a point where the drive's over
voltage protection shuts down the drive. To prevent this, a regen circuit shunts some of the energy
into the internal regen resistor when the voltage rises too high.
External Regen Resistor
All Xenus Plus Dual Axis drives provide for connection to an external regen resistor. In the case of
the XE2/XP2/XM2/800-1819 and non "-N" models, for regen energy that exceeds the rating of the
internal regen resistor, and external regen resistor can be used. This is done by unplugging the
internal regen resistor from J2 and connecting the external regen resistor in its place. The model
800-1818, 800-1887 and "-N" drives do not have an internal regen resistor but are supplied with a
regen mating plug connected to J2. This mating plug is used to connect to an external regen resistor.
For electrical safety reasons and for all Xenus Plus Dual models, the specified mating plug
must always be plugged into and secured to J2 regardless of whether a regen resistor,
internal or external, is connected.
Regen Circuit Components
All Xenus Plus drive models provide an internal transistor that can be used in combination with an
external resistor. Copley Controls supplies compatible resistors as described in
Assemblies (p. 165). When using a resistor acquired from another source, be sure it meets the
specifications described in
Regen Circuit Protections
The drive protects the regen circuit against short circuit and uses I
to protect both the external resistor and the internal transistor.
Configurable Custom Resistor
The following values can be entered for a custom resistor using CME:
Option
Resistance Value
Continuous Power
Peak Power
Time at Peak Power
Copley Controls
Regen Resistor Sizing and Specification (p.
Description
Value in Ohms of the resistor
Continuous power rating of the resistor
Peak power rating of the resistor
Time at peak power of resistor
16-01344 Rev 06
Regen Resistor
134).
2
T peak current/time algorithms
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