Rockwell Automation 1503 IntelliVAC Contactor Control Module - Series C and later - Manual (Page 45)

5-6 Monitoring and Troubleshooting
1503-UM052D-EN-P – June 2013
Contactor Status (cont.)
Table 5.C – Module Troubleshooting (cont.)
Problem or Trip Indicated Indication of the following conditions Possible Solutions
Contactor opens during operation • Motor Protection activated • Investigate and reset.
• Stop command initiated • Verify circuit
• Module Status LED ‘Red’ (Series C)
or ‘Yellow – Flashing’ (Series D)
• Undervoltage fault (no TDUV), control voltage dipped
below trip point. Verify voltage levels are 110 to 240
VAC, 110 to 250 VDC.
• With external capacitor and TDUV feature activated,
undervoltage condition for longer than programmed
TDUV time. Undervoltage fault activated.
• Module Status LED ‘Green’ and Contactor Status LED
‘Red Flash 2’ (Series C)
or
• Module Status LED ‘Yellow – R2’ and Contactor Status
LED ‘Off’
• Contactor Status feedback between Terminals 11 and
12 on the IntelliVAC has closed. The IntelliVAC will de-
energize the coil, thinking the contactor has opened
for other reasons.
• Both status LEDs ‘Off’ • Check control voltage and internal control fuse. (Refer
to Figure 4.1 for location.)
Contactor does not open (mechanical latch) • Module Status LED ‘Yellow’ and Contactor Status LED
‘Yellow’
• Trip mechanism is damaged. Inspect and replace if
needed.
• Check for loose connections in the control circuit.
Contactor does not open
(electrically held) • Series C – Module Status LED ‘Green’ and Contactor
Status ‘Red Flash 3’
• Series D – Module Status LED ‘Yellow – R3’ and
Contactor Status LED ‘Yellow’
• Contactor welded or mechanisms binding. Inspect and
repair if needed.
Refer to Table 5.A (Series C) or Table 5.B (Series D) for definition of Module
LED states.
Table 5.D – Minimum IntelliVAC Operational Supply Voltages
Voltage Level
Contactor Rating
(Amps)
Minimum Voltage
(VAC, 47 to 63 Hz)
Pick-Up 400/800 95
Drop-Out 400/800 75
Trip (Mechanical Latch)
400 70
800 80