Siemens SAMMS-MV user manual Troubleshooting

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4 Troubleshooting

4Troubleshooting the SAMMS-MV Device

This section discusses how to troubleshoot the SAMMS-MV device. The troubleshooting guide below lists basic errors that can occur while operating the SAMMS-MV device. Use the guide as necessary to solve error conditions as they arise. Do not attempt to solve any error condition that is not listed in the troubleshooting guide. Instead, contact your Siemens repre- sentative.

Note: When contacting your Siemens representative, refer to the SAMMS-MV production control label to identify production date, hardware version, and software version. This label is mounted on the right side of the unit when viewed from the front. For example, 93-250-456-01/03 represents a device that was produced in 93, the 250th day of the year, unit number 456, hardware version 01, and software version 03.

		Troubleshooting Guide

Error Condition		Main Cause		Remedy

Current Unbalance		Current unbalance LED is illuminated if	1.	Correct the cause of voltage or load unbalance.
		current unbalance exceeds 40%, or it
		flashes if current unbalance is between	2.	Verify current transformer secondary voltage is
		20 and 40%. Current unbalance may		unbalanced at SAMMS-MV terminals 1, 2, and 3 with
		be due to voltage or load unbalance.		reference to 4.
Overload Trip		Indicates motor exceeded winding,	1.	Verify that the full load current F4 and service factor
		housing, or rotor temperature		F6 on the HHC matches the full load current and the
		threshold.		service factor on the motor nameplate.
			2.	If the motor tripped during start, increment the
				overload class one step and start again. If still
				unsuccessful, the motor’s rotor may be locked or
				stalled. Correct motor malfunction before restarting.
			3.	If the motor tripped after running for a period more
				than the overload class selected, the trip may be due
				to a running overload such as excessive loading on a
				conveyor belt or bad bearings. Remove the cause of
				the overload before restarting the motor.
			4.	F16 on HHC displays the most recent overload trip
				current value.

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Contents SAMMS-MV Qualified Person Contents Signal Words Field Service OperationQualified Person About this Manual SAMMS-MV Device Models Advanced Protection for Medium-Voltage MotorsUsing the Standardized Control Panel Overload ProtectionProgramming Control Circuits Outputs One Change settings requires password Yes Remote inputs OneSAMMS-MV Model Light barsInstalling the SAMMS-MV Device Full voltage non-reversing connection diagram Grounding the Device SAMMS-MV device communications connections Performing a Lamp Test Password ProtectionUsing the Reset/Test Push Button 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 Incomplete Sequence Ridethrough Upon Loss of Power SAMMS-MVX OnlyMotor Ambient Temperature Intelligent Reduced-Voltage Starting SAMMS-MVX OnlyODP motor thermal signature Protection Curves and Overload Classes Seconds Operating the SAMMS-MV 11 Motor protection graph Dual Overload Protection SAMMS-MVX Only Ultimate Trip Level and Service FactorPhase Unbalance Jam Protection SAMMS-MVX OnlyStart Inhibit Ground Fault DetectionRepetitive Starts Cooling Time Constants12 Multi-start scenario for an ODP motor Emergency Restarting Autoreset After a Trip SAMMS-MVX OnlyUsing the Hand Held Communicator HHC Function Key5A CT primary current if used Full load current for OLR No 5A CT primary current low speed if used Service factorFunction Number Motor type Overload trip class class 2 throughUsing the Enter Key Using the SAMMS-MV Device Func- tionsUP and Down Keys ON/OFF Means warning Select ground fault pick-up currentDefault Value Select jam pickup current 120-400% Iflc F24 Loss of Load13 Entering and changing passwords SAMMS-MV Functions Program Mode/PasswordsF0 Ambient Temperature F1 Control Circuit Number and Incomplete Se- quence StatusF4 Full-Load Current for Overload Relay #1 Overload Setting Step Default Relay Size RangeF3 Size for Overload Relay #2 SAMMS-MVX Only 18 to 72AF7 Overload Trip Class F6 Service FactorF6A Motor Type F7A Cold Stall TimeF10 Display Time to Restart F8 Autoreset SAMMS-MVX OnlyF9 Phase Unbalance Protection F11 Emergency RestartingSize Pickup Current Default H3A-H3C 7A-I FLC 10A 20A F12 Ground Fault Protection or WarningF12A Ground Fault Pickup Current F13 Set Programmable Timer #1F17 Current Unbalance F21 Reset Motor DataF16 Trip Current F18 Display Total Elapsed Run Time of the MotorF23 Jam Protection SAMMS-MVX Only F25 Percentage of Motor Winding TemperatureF22 Process Current Warning Level 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