Yaskawa DR2 Sigma Servo - Manual (Page 376)

SERVO SELECTION AND DATA SHEETS
5.6.4 Brake Power Supply cont.
364
2) The internal circuits are shown below. While it is possible to switch either the AC or DC
side of the brake power supply, it is normally safer to switch the AC side. If the DC side is
to be switched, install a surge suppressor near the brake coil to prevent the surge volt-
ages due to switching the DC side damaging the brake coil.
• Internal Circuit for 200 VAC Input (LPSE-2H01)
Yellow
AC Side
White
Surge
Sup-
pressor Diode
Red
DC (Brake) Side
Black
• Internal Circuit for 100 VAC Input (LPDE-1H01)
Blue
AC Side
White
Diode Bridge
Surge
Sup-
pres-
sor
Surge
Killer
Red
DC (Brake) Side
Black
5