4-12 MOUNTING AND WIRING
SB1391 Hardware and Setup Guide - Document revision no. 1.14
FIGURE 4-11 Single-phase (DC brush) motor connection
4.3.3. Regen Connector (J8)
The Regen connector is a terminal block connector (accepts wires directly).
Use 16 to 14 AWG wire for the Regen connector.
TABLE 4-11 Regen Connector
Pin Description
REG1 For the internal regeneration resistor option, connect via external jumper to
REG3. For external regeneration resistor option, not used.
REG2 For internal regeneration resistor option, not used. For external regeneration
resistor option, connect to a lead of the external regeneration resistor.
REG3 For internal regeneration resistor option, connect via external jumper to REG1.
For external regeneration resistor option, connect to the other lead of the
external regeneration resistor.
The power supply unit is fitted with an internal 140, 100W regeneration resistor.
In applications with very high inertia loads, the internal regeneration resistor sometimes can't
absorb all the motor's regeneration energy, causing over-voltage protection to be activated. In
such cases, the internal resistor must be bypassed using an external resistor with a higher power
rating. The resistance of the external resistor must be >= 15.
Further Information
More detailed information about the external regeneration resistor
calculation is contained in Chapter4.3.3.
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