Rockwell Automation 2090-XBxxx Resistive Brake Module Installation Instructions - Manual (Page 18)

Publication 2090-IN009F-EN-P — November 2004
18 Resistive Brake Module Installation Instructions
230 VAC Auxiliary Power Status LED
(2090-XB120-xx RBM only)
The 230 VAC Status LED is ON when 230V AC is applied to L1 and L2
(TB4) and the contactor is engaged by applying 24V DC across COIL_A1 and
COIL_A2 (e.g., a Brake Enable signal is received from a drive).
Use the table below for troubleshooting the RBM using the 230 VAC Status
LED. ‘1
If 230 VAC Status LED is: RBM Contactor Status is: Potential Cause is: Possible Resolution is:
Steady Green
Engaged No faults or failures N/A
Disengaged Contactor failure
Verify by monitoring CONSTAT_41/42
Contact AB representative
Blinking Green
(audible clicking)
Rapidly engaging/disengaging
Grounding
• Verify grounding
• Re-route wires
• Refer to GMC-RM001x-EN-P
230VAC is varying
• Check VAC Loading
• Check VAC Source
• Verify wiring
Control circuit improperly wired Verify control wiring and programming
Off
(intended)
Engaged
Contactor failure
(contacts welded together)
Verify by monitoring CONSTAT_41/42
Contact AB representative
Disengaged No faults or failures N/A
Off
(unintended)
Engaged
Contactor failure
(contacts welded together)
Verify by monitoring CONSTAT_41/42
Contact AB representative
LED failure
Verify by monitoring CONSTAT_41/42
Contact AB representative
Disengaged
+24V signal not functioning properly See other Troubleshooting tables
Contactor failure (coil damaged) Contact A-B representative
No 230V signal
• Verify wiring
• Verify 230VAC source