LEESON SCR Thyristor Motor Control - Manual (Page 56)

50 Troubleshooting SPEEDMASTER™ OPERATION MANUAL
Current limit LED (174011 and M1740007)
174011 and M1740007 series drives are equipped with a red,
PCB-mounted current limit LED. The red current limit LED turns
on whenever the drive reaches current limit and turns off
whenever the drive is not in current limit (normal operation).
Figure 27. Current Limit LED
IC502
S1
C502
IC501
A1
-
METER
+
SO502
SW501
115 230
MOV503 T501
L2
CL IL501
SW502
90 180
C504
SO501
INHIBIT
S2
S3
ACCEL DECEL MAX SPD MIN SPD TORQUE IR COMP
+
-
SPEEDMASTER
L2
S2
S3
A1
S1
CURRENT LIMIT
LED