LEESON SCR Thyristor Motor Control - Manual (Page 31)

25 SPEEDMASTER™ OPERATION MANUAL
Before applying power
• Set voltage switch SW501 to either 115 or 230 to match the
AC line voltage. Set voltage switch SW502 to either 90 or 180
to match the maximum armature voltage (see Figure 14).
• Verify that no conductive material is present on the printed
circuit board.
• If using a 90 VDC or 130 VDC motor with 230 VAC line
voltage, derate the nameplate motor speed and torque by at
least 30%.
IC502
S1
C502
IC501
A1
-
METER
+
SO502
SW501
115 230
MOV503 T501
L2
CL IL501
SW502
90 180
C504
SO501
INHIBIT
S2
S3
+
-
SPEEDMASTER
L2
S2
S3
A1
S1
VOLTAGE
SWITCHES
Figure 14. Voltage Switches
Warning
Change voltage switch settings only when the drive is
disconnected from AC line voltage. Make sure both
switches are set to their correct position. If the switches are
improperly set to a lower voltage position, the motor will not
run at full voltage. If the switches are improperly set to a
higher voltage position, the motor will overspeed, which
may cause motor damage.
ƽ
Operation