Siemens SAMMS-MV user manual Troubleshooting Guide Error Condition

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4 Troubleshooting

Troubleshooting Guide

Error Condition

CPU Fault

Ground Fault

Main Cause

Indicates a problem in the microprocessor or a low voltage condition.

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

Verify voltage between terminals 5 and 6 is more than 10 VAC. If fault persists, call Siemens.

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-MV

Operation

Usually indicates lack of control power.	1.	Verify the presence of 12 VAC between terminals 5
		and 6 of the SAMMS-MV 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-MV unit is in the Auto mode.
	2.	Verify 115 VAC input at SAMMS-MV 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-MV 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.		Change parameters after motor is stopped.
Usually indicates improper grounding		Refer to Section 2 of this manual for instructions.
or noise interference.

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Contents SAMMS-MV Qualified Person Contents Qualified Person Signal WordsField Service Operation About this Manual SAMMS-MV Device Models Advanced Protection for Medium-Voltage MotorsProgramming Control Circuits Using the Standardized Control PanelOverload Protection Change settings requires password Yes Remote inputs One SAMMS-MV ModelOutputs One Light barsInstalling the SAMMS-MV Device Full voltage non-reversing connection diagram Grounding the Device SAMMS-MV device communications connections Password Protection Using the Reset/Test Push ButtonPerforming a Lamp Test Performing an Overload Relay TestOutput Devices Input DevicesLadder Diagrams Library of Standard Ladder Diagrams Custom Ladder DiagramsSAMMS-MVX Standard control circuits PB1 PB2 PB3 PB4 PB5 PB6 Ridethrough Upon Loss of Power SAMMS-MVX Only Motor Ambient TemperatureIncomplete Sequence Intelligent Reduced-Voltage Starting SAMMS-MVX OnlyODP motor thermal signature Protection Curves and Overload Classes Seconds Operating the SAMMS-MV 11 Motor protection graph Ultimate Trip Level and Service Factor Phase UnbalanceDual Overload Protection SAMMS-MVX Only Jam Protection SAMMS-MVX OnlyGround Fault Detection Repetitive StartsStart Inhibit Cooling Time Constants12 Multi-start scenario for an ODP motor Autoreset After a Trip SAMMS-MVX Only Using the Hand Held Communicator HHCEmergency Restarting Function Key5A CT primary current low speed if used Service factor Function Number5A CT primary current if used Full load current for OLR No Motor type Overload trip class class 2 throughUP and Down Keys Using the Enter KeyUsing the SAMMS-MV Device Func- tions ON/OFF Select ground fault pick-up current Default ValueMeans warning Select jam pickup current 120-400% Iflc F24 Loss of Load13 Entering and changing passwords Program Mode/Passwords F0 Ambient TemperatureSAMMS-MV Functions F1 Control Circuit Number and Incomplete Se- quence StatusOverload Setting Step Default Relay Size Range F3 Size for Overload Relay #2 SAMMS-MVX OnlyF4 Full-Load Current for Overload Relay #1 18 to 72AF6 Service Factor F6A Motor TypeF7 Overload Trip Class F7A Cold Stall TimeF8 Autoreset SAMMS-MVX Only F9 Phase Unbalance ProtectionF10 Display Time to Restart F11 Emergency RestartingF12 Ground Fault Protection or Warning F12A Ground Fault Pickup CurrentSize Pickup Current Default H3A-H3C 7A-I FLC 10A 20A F13 Set Programmable Timer #1F21 Reset Motor Data F16 Trip CurrentF17 Current Unbalance F18 Display Total Elapsed Run Time of the MotorF25 Percentage of Motor Winding Temperature F22 Process Current Warning Level SAMMS-MVX OnlyF23 Jam Protection SAMMS-MVX Only F23A Jam Pickup Current SAMMS-MVX OnlyF26 Baud Rate F27 AddressTroubleshooting Error Condition Troubleshooting Guide Error Condition Appendix a Technical Specifications Over load Spec ificat ions Stat ist ica l Data Dimensions Catalog Number SAM6 Switch # Function Position 375 Siemens Energy Automation, Inc