Siemens MCC-3298 user manual Troubleshooting Guide Error Condition

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4 Troubleshooting

Troubleshooting Guide

Error Condition

Ground Fault

Main Cause

Indicates the ground fault current exceeded the threshold. If ground fault protection was selected, the ground fault LED illuminates solidly and the motor stops. If ground fault warning was selected, the ground fault LED flashes and the motor continues to run.

Remedy

The cause of the ground fault should be determined and removed before using the motor again. F16 on the HHC displays the ground fault trip current.

Ready Light not Illuminated

Improper Remote Operation

Improper Alarm Contact Operation

Improper Light

Operation

Improper Local Operation

Improper Contactor Operation

Cannot Change HHC Settings

Improper

SAMMS-LV

Operation

Usually indicates lack of control power.	1.	Verify the presence of 12 VAC between terminals 5
		and 6 of the SAMMS-LV unit.
	2.	If control power is not present, check the control
		power fuses or the control power transformer and
		replace if defective.
	3.	If control power is present, push the RESET button to
		test lights and unit. If the Ready light does not
		illuminate, call Siemens.
Indicates connection or operator error.	1.	Verify the SAMMS-LV unit is in the Auto mode.
	2.	Verify 115 VAC input at SAMMS-LV terminals 9, 10,
		11, and 12 with reference to 13, and at terminal 7
		with reference to 13.
	3.	If remote operation is intermittent, verify connections
		are made in a manner to avoid noise interference.
		Refer to Section 2 of this manual for instructions.
Indicates connection error.		Verify 115 VAC at terminals 7 and 8 with reference to
		13.
Usually indicates programming error.	1.	Perform lamp test by pressing RESET button.
	2.	Verify ladder diagram.
Operator error.		Verify SAMMS-LV is in Local mode.
Connection error.		Verify 115 VAC at terminal 7 with reference to 13,
		and at output terminals 14, 15, or 16 with reference
		to 13 when the motor is started.
Usually indicates motor is running, or	1.	Verify that the motor is stopped before changing
incorrect password.		parameters.
	2.	Verify that the correct password is in use. If the
		password cannot be determined, call Siemens.
Usually indicates improper grounding		Refer to Section 2 of this manual for instructions.
or noise interference.

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Contents SAMMS-LV Qualified Person Contents Field Service Operation Signal WordsQualified Person About this Manual Advanced Protection for Low-Voltage Motors SAMMS-LV Device ModelsOverload Protection Using the Standardized Control PanelProgramming Control Circuits Light bars Change settings requires password Yes Remote inputsSAMMS-LV Model Outputs OneInstalling the SAMMS-LV Device Full voltage non-reversing connection diagram Grounding the Device SAMMS-LV device communications connections Performing an Overload Relay Test Password ProtectionUsing the Reset/Test Push Button Performing a Lamp TestInput Devices Output DevicesCustom Ladder Diagrams Ladder Diagrams Library of Standard Ladder DiagramsSAMMS-LVX Standard control circuits RVA Intelligent Reduced-Voltage Starting SAMMS-LVX Only Ridethrough Upon Loss of Power SAMMS-LVX OnlyMotor Ambient Temperature Incomplete SequenceODP motor thermal signature Operating the SAMMS-LV Operating the SAMMS-LV Device 10 Motor protection graph Jam Protection SAMMS-LVX Only Ultimate Trip Level and Service FactorPhase Unbalance Dual Overload Protection SAMMS-LVX OnlyStart Inhibit Ground Fault DetectionStator Protection Repetitive StartsEmergency Restarting Autoreset After a Trip SAMMS-LVX OnlyUsing the Hand Held Communicator HHC Size Pickup Current Default Pickup Range5A CT primary current if used Full load current for OLR No Function NumberJam pickup current F24 Loss of load protection or warning UP and Down Keys Using the Enter KeyFunction Key List KeyCapability External trips Enable/disable phase unbalanceIflc is the value of Iflc for Select ground fault pick-up current Value 2A-5AStep Size Second Default Value Means warning200% 50% 4800 Using the SAMMS-LV Device Func TionsProgram Mode/Passwords Select jam pickup current 120-400% I FLC F24 Loss of Load13 Entering and changing passwords F2 Size for Overload Relay #1 F0 Ambient TemperatureSAMMS-LV Functions F1 Control Circuit Number and Incomplete Se- quence Status90A Overload Setting Step Default Relay Size Range 24.0A 36AF4 Full-Load Current for Overload Relay #1 45AF7 Overload Trip Class F6 Service FactorF8 Autoreset SAMMS-LVX Only F9 Phase Unbalance ProtectionF10 Display Time to Restart F12 Ground Fault Protection or WarningF11 Emergency Restarting F15 Display Current F12A Ground Fault Pickup CurrentF13 Set Programmable Timer #1 F14 Set Programmable Timer #2F19 Number of Motor Starts F21 Reset Motor DataF17 Current Unbalance F18 Display Total Elapsed Run Time of the MotorF24A Loss of Load Pickup Current SAMMS-LVX Only F25 Percentage of Motor Winding TemperatureF23A Jam Pickup Current SAMMS-LVX Only F24 Loss of Load Protection or Warning SAMMS-LVX OnlyF27 Address Troubleshooting Error Condition Troubleshooting Guide Error Condition Appendix a Technical Specifications Overload Specifications Statistical Data Dimensions Catalog Number SAM4 Switch # Function Position Samms Sensor, sizes 1C, 2A, 2B Page Siemens Energy Automation, Inc