Control Techniques Unidrive Installation Manual page 22

Figure 4-7 System configuration 2 circuit diagram for Unidrive SP size 4 to 6, SPMA/D
L3
L2
3-phase
AC supply
L1
Aux.1
Ovld.1
D1
Rdis
PS1
K1b K2d
The total brake resistance used in Low Voltage DC mode is the parallel configuration of
NOTE
R_ LVDC and R_norm.
See Chapter 5 Component data on page 30 for details on components.
See section 4.8 External soft start circuit control on page 27 for external soft start circuit
control.
22
K1
K2a
F2a
K2b
F2b
Control + 24V
external input
R_norm
K2f
R_LVDC
K1a
24V
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F1a
Drive
24V
terminals
42
41
RLY1
Rs F4
F3
Aux.3
Ovld.3
Aux.2
Ovld.2
24V Low voltage DC
F2d
Unidrive SP Low Voltage DC Installation Guide
+DC
-DC
Brake
mode enable (T51)
0V (T50)
Issue Number: 1
T1 T2