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Siemens MCC-3298 Power Supply User Manual

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1. To enter digit First digit selected Enter following digits in the same manner 0000 9999 To change password ER y Prompt for new password To select UP DOWN digit o enter digit Password Correct First digit f Enter new selected Authorized to d change settings passwor twice Enter following digits in the To select function same manner to change settings 0000 9999 Password entered twice Figure 3 13 Entering and changing passwords 30 3 Operating the SAMMS LV Device To change the password 1 Enter the password as described above 2 With the password entered and the display showing press the UP or DOWN key to enter change mode The display reads CH9 3 Press the ENTER key and the display shows HHHO the prompt for entering the new password 4 Enter the new password in the same way described above After entering all four digits of the new password the display will again display HHHO 5 Enter the new password a second time If it was entere
2. 1 Display the elapsed motor running time 0 0 6553 x 10 hr in tens of hours Display the number of motor starts in tens of hours 0 0 6553 x 10 0 1x10hr up to 999 9 1x10hr up to 6553 0 1x10 up to 999 9 1x10 up to 6553 Display the number of overload trios 0 9999 F2 NWA N A N A running time the number of starts and the number of overload trips Set process current waming 0 100 I ac OFF 1 Reset motor data Zeroes the elapsed F23 Jam protection temperature ON OFF Select jam pickup current 120 400 ruc Loss of Load ON OFF F24A Select loss of load pickup current 20 95 of running current Display percentage of motor winding O to 250 200 A A 1 N S Select baud rate 2400 4800 9600 4800 Select address 1 224 Table 3 8 Motor control and protection functions page 3 of 3 3 28 Using the SAMMS LV Device Func tions This section lists the 28 major motor control and protection functions and several related functions FO F27 F4A F5A F12A F23A and F24A and how to use them The functions available for each version of the SAMMS LV device are shown in table 3 7 Table 3 8 provides a description of each function and its associated range step size and default value To access a function perform the following steps 1 Connect the HHC s cable to the communications port on the front of the SAMMS LV device 2 Locate the desired function using th
3. ProY Press the UP or DOWN key to change to the display mode 6 Press the F unction key to go to other functions F10 Display Time to Restart 1 Press the LIST key to view the time remaining before the motor can be restarted The time is displayed in seconds While the motor is cooling the time to restart counts down from the maximum winding temperature allowed to the steady state full load temperature The display is always zero if the motor is not in a start inhibit mode If a time to restart displays the motor can only be restarted by an emergency restart see F11 2 The UP DOWN and ENTER keys are disabled 3 Press the Fjunction key to go to other functions F11 Emergency Restarting 1 Press the LIST key to view the emergency restart setting ON or OFF The factory default is OFF With emergency restart enabled ON you can restart the motor after the overload relay is reset manually or automatically even when the time to reset is not zero When you initiate an emergency restart the motor conditions are reset to zero to simulate a com pletely cold start The emergency restart function is auto matically disabled after any restart emergency or normal and you must manually re enable the emergency restart function by setting F11 to ON 2 Emergency restart can be enabled in either the program mode or the display mode 3 To change the setting press the UP or DOWN key to display the setting options then
4. remote three wire SAMMS LVE has seven preloaded circuits ladder diagrams for use with across the line FVNR applications SAMMS LVX may be used with any of the circuits For details on the library of standard ladder diagrams refer to the SAMMS Standard Circuit Manual 3 6 2 Custom Ladder Diagrams For special motor control applications not covered by the library of standard ladders you can construct custom ladder dia grams using the input and output devices and their associated symbols for the SAMMS LV device Siemens personnel can build these custom ladder diagrams or you can build your own You can purchase an optional IBM PC compatible software package to develop custom ladder diagrams for special control applications The package also includes a library of standard symbols The package enables you to reconfigure existing SAMMS LV devices to meet changing plant needs Refer to the Custom Software Manual for the SAMMS device Bulletin CP 3291 do alo alo HANDS wW_NO OFFSW_NO AUTOSW_NO AUTO i INDICATORS oo AUTOSW_NC INCOMPLETE SEQUENCE FLASHING LIGHTS Lo DA PES TERMINALS T UTOL_NO AUTOL_NC Figure 3 2 Ladder symbols used with the SAMMS LV device sheet 1 13 3 Operating the SAMMS LV Device ac OUTPUTS ae At IH NE Ll I LI OUTPUT DUTPUTIZNO QUTPUTI_NC OUTPUT _NO OUTPUT2_NC TPUT3_NO DUTPUT3_NC CONTROL RELAYS TIMIN
5. flashes if current unbalance is between 2 Verify current transformer secondary voltage is 20 and 40 Current unbalance may unbalanced at SAMMS LV 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 Ifthe motor tripped during start increment the overload class one step and start again If still unsuccessful the motors 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 39 4 Troubleshooting Error Condition Main Cause Incomplete Indicates the SAMMS LV unit does not Sequence detect current one second after a start command or it detects current one second after a stop command External Trip If the external trip LED is solidly illuminated and the motor is stopped it indicates a jam or loss of load condition CPU Fault Indicates a problem in the microprocessor or a low voltage condition 40 Troubleshooting
6. press the key and hold the key down for no longer than two or three seconds 3 Fast scroll press the key and hold the key down long enough for the HHC to step through more than five steps The following information discusses how to operate the UP and DOWN keys in the function and display modes 1 In the function mode the UP key increases the function number by one and the DOWN key decreases the function number by one If FO appears on the display pressing the DOWN key rolls the function over to the highest numbered function F27 If the highest numbered function F27 ap pears in the display pressing the UP key rolls the function over to the lowest numbered function FO 2 In the display mode use the UP and DOWN keys to step through the range of settings for each set point function You also use the UP and DOWN keys to step through the individual line currents and the average line current of F15 Just as the UP and DOWN keys cause the function numbers to roll over they also cause the range of settings to roll over 26 3 27 4 Using the ENTER Key Use the ENTER key to change settings on the HHC display The SAMMS LV device disables the ENTER key under the following conditions 1 The ENTER key is disabled while the device is in the function mode 2 The ENTER key is disabled for non setting functions that display a parameter 3 The ENTER key is disabled while the motor is running to prevent settings from being changed
7. AAA OOOO 1000 2000 3000 4000 5000 6000 7000 Time in Seconds Figure 3 5 ODP motor thermal signature 18 3 Operating the SAMMS LV Device 00 L 4S YUM SIOJOLW WIEM 10 anno ONSUEJOBIEYO JUBLINI Eull L E eAnBi4 Z sse g ssejo 8 sselg OL sepi SGNOOAS z seglo S Ssejg OL sseiD SL Sse D EZ SSeID 00 L 4S YIM SIOJOW PJOO JOJ N onsuejoeleyo juelno euw 9 e a 1n B14 SUNODIS 19 GL L 4S YIM SIOJOW WWM JOJ anno ONSUEJOBIEYO JUBLINI Eul G E emBiy GL L 4S YUM SIOJOW PjOO JOJ BAIND onsuejoeteyo JUSLINI BUI ge 3MB z sse g ssejo G SSeIg sselo 8 Sselg OL Sselg OL sseiD SL sselo Ez SSelg SUNODIS SANODIS 3 Operating the SAMMS LV Device 20 3 Operating the SAMMS LV Device 100000 Motor running current at full load current Loss of load adjustable from Jam protection 20 to 90 of adjustable from rated FLC 120 to 400 of FLC Maximum Class 5 curve stall time z H seconds J Jam and loss of RE protection persistence delay 5 times overload class Motor starting current 600 rated full load current yy Figure 3 10 Motor protection graph 21 3 Operating the SAMMS LV Device of 10 guarantees that a current of 600 of l will cause a trip in 10 seconds or less In the SAMMS LV the protection curves are designed to cause a trip in 90 to 100 of the class time for a current of 600 of l The lowest overload clas
8. SAMMS LV device does not detect motor current one second after issuing a start command or if the SAMMS LV device detects motor current one second after issuing a stop command an Incomplete Sequence trip occurs The motor contactors are opened and the Incomplete Sequence LED illuminates solidly In standard reduced voltage autotransformer RVA starters an incomplete sequence also occurs if the remote RUN seal in contact wired to pin 9 does not close within one second of the transition from starting to full speed operation This function can be disabled when configured at the factory You can also disable it with the Hand Held Communicator to the SAMMS LV device This is helpful when the controller is tested before connecting to the motor After connecting the HHC use the function UP and DOWN buttons to select F1 While pressing the ENTER button for a period of one second push START Repeating the same process enables the incomplete sequence protection function 3 8 Intelligent Reduced Voltage Starting SAMMS LVX Only Intelligent reduced voltage starting is provided in all standard reduced voltage Siemens starters The advantage of this fea ture is that the transition from reduced to full voltage is deter mined by the magnitude of the actual motor current and not by a timer This optimizes the transition When a motor with intelligent reduced voltage starting is started a 30 second timer is energized If the timer times out the transiti
9. Timers configured as on delay timers have an unlimited supply of normally open timed closed NOTC and normally closed timed open NCTO contacts Timers configured as off delay timers have an unlimited supply of normally open timed open NOTO and normally closed timed closed NCTC contacts Communications Inputs A serial RS 485 communications port is located on the back of the device for external communications The communications inputs must be included in the ladder logic control circuit 3 Operating the SAMMS LV Device 3 6 Ladder Diagrams 3 6 1 Library of Standard Ladder Diagrams The SAMMS LV library of more than 70 ladder diagrams covers most standard motor control applications Table 3 3 lists the standard control circuits and the input and output assignments for the library You can use the library with the following starter types across the line non reversing across the line reversing two speed two winding two speed one winding constant or variable torque two speed one winding constant horsepower reducea voltage autotransformer size 2 through 4 reducea voltage autotransformer sizes 5 and 6 full voltage part winding wye delta open transition wye delta closed transition For each starter type the library includes seven control types e local two wire e local three wire e local three wire remote two wire local two wire remote two wire local three wire remote three wire remote two wire
10. of Motor Winding Temperature 1 Press the LIST key to view the temperature of the motor windings as a percentage of the steady state full load winding temperature The maximum allowable winding tem perature percentage is 175 2 The UP DOWN and ENTER keys are disabled for this function 3 Press the F unction key to go to other functions F26 Baud Rate 1 Press the LIST key to view the active setting Allowable settings are 2400 4800 or 9600 baud The factory default is 4800 2 To change the setting you must be in program mode 3 Press the UP or DOWN key to scroll through the range of settings until the selected setting appears on the display 4 Press the ENTER key to change the active setting to the selected setting The display becomes blank while you hold down the ENTER key and the SAMMS LV device stores the new setting 5 To exit the program mode press and hold the Flunction key for several seconds The display will show ProY Press the UP or DOWN key to change to the display mode 6 Press the FJunction key to step through to another function 37 3 Operating the SAMMS LV Device F27 Address 1 Press the LIST key to view the active setting Allowable addresses are 1 224 The factory default is 200 2 To change the setting you must be in program mode 3 Press the UP or DOWN key to scroll through the range of settings until the selected setting appears on the display 4 Press the ENTE
11. of Siemens Energy amp Automation Inc Any statements contained herein do not create new warranties or modify the existing warranty Contents 1 Introduction sss ssssssssssss sss nino 2 3 9 Ridethrough Upon Loss of Power 1 1 About this Manual aros 3 SAMMS LVX Ones ereer 17 1 2 About the SAMMS LV Device sese 3 3 10 Overload Protection sees essen 17 1 2 1 The SAMMS LV Device Models 4 3 11 Motor Ambient Temperature see eee eee 17 1 2 2 Advanced Protection for Low Voltage 3 12 Protection Curves and Overload Moto iaa da 4 Clas tii asar 17 1 2 3 Overload Protection sese 5 3 13 Ultimate Trip Level and Service Factor 22 1 2 4 Programming Control Circuits 5 3 14 Phase Unbalance sss essere esen 22 1 2 5 Using the Standardized Control Panel 5 3 15 Dual Overload Protection SAMMS LVX Only 22 3 16 Jam Protection SAMMS LVX Only 22 2 Installing the SAMMS LV Device 7 SZ S Hea Oe TSH 22 orbs REE eving and Atong ine AANO Del 3 18 Process Current Warning SAMMS LVX Only 22 2 2 Where to Locate the Device sss eee ee 7 319 Stator Protection 23 2 3 Mounting the Device sss sese ee eee eee 7 3 20 Repetitive Starts ccoo 23 2 4 Connecting the Device dico 7 3 21 a ela 23 7 pa rene N o 3 22 Cooling Time Constants sss 23 ye See ie Me e 3 23 Normalized Temperature Rise for Class B and 2 4 3 Connecting the Device to a Control Power Class F Insulation 23 apuce S S E e eA P
12. of the motor rms current The motor model compares the calculated temperature to trip temperature values and provides a signal that trips the motor off line when the motor reaches a trip temperature value The model closely emulates the heating and cooling of the motor windings and provides protection against both transient and steady state overload conditions Protection for 1 Introduction Figure 1 2 Hand Held Communicator HHC 1 2 3 Overload Protection The motor model offers the selection of overload classes 2 through 23 The SAMMS LV device offers more accurate motor protection than traditional thermal overload and most electronic motor protection devices This prolongs motor life by eliminating nuisance tripping for multiple restarts and allowing for proper cool down time when the motor winding temperature reaches a critically high value 1 2 4 Programming Control Circuits The SAMMS LV device allows you to modify its configuration by programming the microprocessor The SAMMS LV device replaces conventional timers overload relays pushbuttons and selector switches SAMMS LVE is preloaded with seven across the line control circuits and the desired control circuit can be selected using the Hand Held Communicator HHC Alternatively a custom across the line circuit may be downloaded from a PC A library of more than 70 typical control circuits exists for use with SAMMS LVX to meet app
13. second time is because the motor can restart immediately after an overload trip if autoreset is ON 8 If you made an incorrect selection repeat steps 3 through 7 9 To exit the program mode press and hold the F unction key for several seconds The display will show Pro9 Press the UP or DOWN key to change to the display mode 10 Press the FJunction key to step through other functions F9 Phase Unbalance Protection 1 Press the LIST key to view the active phase unbalance protection setting ON or OFF The factory default setting is ON a When phase unbalance protection is enabled ON cur rent unbalances of greater than 40 accelerate overload tripping The Phase Unbalance LED flashes for unbal ances between 20 and 40 It remains steadily illumi nated for unbalances greater than 40 33 3 Operating the SAMMS LV Device b When phase unbalance protection is disabled OFF the Phase Unbalance LED remains off unbalanced condi tions have no effect on protection and F17 Display Unbalanced Current displays OFF 2 To change the setting you must be in program mode 3 To change the setting press the UP or DOWN key to display the setting options then press ENTER to select the setting that is shown The display blanks while the ENTER key is pressed 4 Repeat Step 3 if you select an incorrect setting 5 To exit the program mode press and hold the F unction key for several seconds The display will show
14. sys tem Note The SAMMS LV device does not replace the disconnect device or the contactor itself connect the SAMMS LV device to the ACCESS Section 2 Installing the SAMMS LV Device System troubleshoot the SAMMS LV device the SAMMS LV device EIC about the technical specifications of the SAMMS LV device Table 1 1 Where to find information Section 4 Troubleshooting the SAMMS LV Device 4 Section 4 Troubleshooting the SAMMS LV Device the SAMMS LV Device Appendix A Technical Specifications of the SAMMS LV Device 1 Introduction SIEMENS SAMMS LVX LED Flashing Current gt 40 Unbalance Impending gt 110 Trip E Overload Overload Incomplete Sequence Loss External Trip Loss cad or Trip Alarm a E or Pres Current E e ea val as Figure 1 1 SAMMS LV front view 1 2 1 The SAMMS LV Device Models The SAMMS LV device is available in two models SAMMS LVE and SAMMS LVX Each model meets the various demands of industrial and commercial specifications and installations Table 1 2 compares the features of each model The SAMMS LV device is designed for critical process control where prevention of downtime is critical It offers motor control and protection along with motor diagnostic and motor driven equipment protection Engineering and operating personnel have access to important data enabling them to optimize motor driven equipment capabilities maximize the process system output and f
15. the ENTER key to change the active setting to the selected setting The display becomes blank while you hold 32 down the ENTER key and the SAMMS LV device stores the new setting 5 To exit the program mode press and hold the Flunction key for several seconds The display will show Pro9 Press the UP or DOWN key to change to the display mode 6 Press the Flunction key to step through to another function F5 Full Load Current for Overload Relay 2 SAMMS LVX Only 1 Press the LIST key to view the active full load current setting for overload relay 2 This setting should normally be the full load current for the low speed shown on the motor name plate The range of possible settings and the factory default value depend on the size displayed in F3 The values are similar to those found in the table in the procedure for F4 If the control is not a two speed control OFF appears on the display and UP DOWN and ENTER keys become disabled 2 To change the setting you must be in program mode 3 Press the UP or DOWN key to scroll through the range of settings until the selected setting appears 4 Press the ENTER key to change the active setting to the selected value The display becomes blank while you hold down the ENTER key and the SAMMS LVX device stores the new setting If you make an incorrect selection repeat steps 3 and 4 5 To exit the program mode press and hold the Flunction key for several seconds The
16. the program mode press and hold the F unction key for several seconds The display will show Pro9 Press the UP or DOWN key to change to the display mode 6 Press the F unction key to step through to another function F8 Autoreset SAMMS LVX Only A WARNING Automatic Reset Can cause death or serious injury Do not use automatic reset with two wire control or where automatic resetting of the SAMMS LV device restores power to the motor endangering personnel or equipment 1 Press the LIST key to view the active autoreset setting either ON or OFF If autoreset is ON the SAMMS LV device automatically resets 30 seconds after an overload or exter nal trip At this time the motor can start If autoreset is OFF you must manually reset the overload relay with the Reset Test button before restarting the motor The factory default is OFF 2 To change the setting you must be in program mode 3 To change the setting press the UP or DOWN key to select the new setting 4 Press and hold the ENTER key If the displayed setting is ON go to step 6 If the displayed setting is OFF go to step 5 5 Release the ENTER key while the display appears blank When you release the key the setting changes to OFF Go to step 6 6 Release the ENTER key SUrE appears on the display 7 Press the ENTER key to make the change to ON Note The reason for displaying SUrE and requiring you to press the ENTER key a
17. while the motor is running Use the following procedure to change a setting This example shows you how to change the full load current setting from 112A to 67A 1 With the HHC in the program mode see section 3 28 1 press the FJunction key The display shows the number of the function most recently selected e g F9 2 Use the UP or DOWN key as described above to step or scroll to the desired function The display shows the desired function e g FA 3 Press the LIST key The display shows the active setting for the selected function e g 112 representing a full load current setting of 112A for a motor controlled by a size 4 contactor 4 Use the UP or DOWN key as described above to step or scroll to the desired setting The display shows the desired setting e g 67 for 67A 5 To enter the desired setting 67 which is displayed press the ENTER key The display becomes blank while you hold down the ENTER key and the SAMMS LV device stores the new setting 6 Press the LIST key to show the new setting 67 on the display 7 To move to the other functions press the F unction key The display shows in the example F4 8 Press the UP and DOWN keys to step through the function numbers The SAMMS LV device is in the function mode 9 To exit the program mode press and hold the Flunction key for several seconds The display will show ProY Press the UP or DOWN key to change to display mode 3
18. 2 Always perform maintenance on equipment employing springs after the spring charged mechanisims are discharged 3 Always let an interlock device or safety mechanism perform its function without forcing or defeating the device Field Service Operation Siemens can provide compentent well trained Field Service Representatives to provide technical guidance and advisory assistance for the installation overhaul repair and mainte nance of Siemens equipment processes and systems Con tact regional service centers sales offices or the factory for details 1 Introduction 1 1 About this Manual This manual introduces you to the Siemens Advanced Motor Master System SAMMS LV motor protection and control relay which incorporates protection designed for low voltage motors This manual also contains information for installing and operat ing the device communicating with other devices over the ACCESS electrical distribution communications system and troubleshooting the device This manual also provides a helpful technical reference for you to use Refer to table 1 1 to determine which section of the manual contains the information that you need These instructions prepare you to handle install operate and maintain the SAMMS LV device and the Hand Held Commu nicator HHC The individual starters and controllers used are designed for specific applications based upon your equipment and needs Instructions covering these starte
19. DEEP FOR 6 SELF TAPPING MOUNTING SCREWS Figure A 2 Overall Dimensions and Mounting Diagram SWITCH FUNCTION POSITION S1 1 NORMALLY OPEN m S1 2 _ NORMALLY CLOSED Ma S2 1 ANY OF THE BELOW m S2 2 IMPENDING TRIP ml E a MA S2 3 OVERLOAD TRIP S2 4 EXTERNAL TRIP S2 5 GROUND FAULT Figure A 3 Alarm Contact Configuration Switches SAMMS LVX Only 47 endix A Technical Specifications 36 LEAD LENGTH 36 LEAD LENGTH 5A ACT used with conventional CTs with 5A secondary SAMMS Sensor sizes 1C 2A 2B SAMMS Sensor sizes 1A 1B il E SAMMS Sensor sizes 5 6 Figure A 4 SAMMS 5A Auxiliary Current Transformer and SAMMS sensors sizes 1A 6 48 SIEMENS eo Automation Inc Switchgear and Motor Control Division P O Box 29503 Raleigh NC 27626 0503 Bulletin MCC 3298 New 3M 0994FP Printed in U S A 1994 Siemens Energy amp Automation Inc SIEMENS is a registered trade
20. EN 9 3 24 Ground Fault Detection sss sees eee eee 23 eae Connecting input and Outpt DEVICES IY 3 25 Autoreset After a Trip GAMMS LVX Only 24 24 5 eae ee AS S 3 26 Emergency Restarting sse eee eee 24 Dee NE uN HOT 3 27 Using the Hand Held Communicator HHC 24 3 Operating the SAMMS LV Device 11 3 27 1The Funci n Key sese eee 26 3 1 Password Protection eee eee 11 3 27 2 The LIST Key sse 26 3 2 Using the Reset Test Push Button see 11 3 27 3UP and DOWN KeyS sese 26 3 2 1 Performing a Lamp Test 11 3 27 4 Using the ENTER Key seene 26 3 2 2 Performing an Overload Relay Test 11 3 28 Using the SAMMS LV Device 333 Motor Control miii casta 11 FUNGHONS csi ihe etree 29 3 4 Output Devices sss sees eee eee 12 3 28 1P rogram Mode Passwords ase 29 3 5 Input Devices ereere rererere 12 3 28 2 SAMMS LV Functions n 31 3 6 Ladder Diagrams esse esse eee eee 13 y 3 6 1 Library of Standard Ladder Diagrams 13 ei Kla laa 39 3 6 2 Custom Ladder Diagrams sss eee Tos Ser A 3 7 Incomplete Sequence oi 17 Appendix A Technical Specifications of the 3 8 Intelligent Reduced Voltage SAMMS LV Device sssssssssssssssessssseessss 42 Starting SAMMS LVX On 17 OCopyright 1994 Siemens Energy Automation Inc SIEMENS is a registered trademark of Siemens AG ACCESS SAMMS SAMMS LV SEAbus Power Monitor Power Monitor PC WinPM and SlEServe are trademarks of Siemens Energy Automation Inc Microsoft is a registered trad
21. G RELAYS TRI_NO TRI_NC TRe_NO TRE_NC TR3_NO TR3 NG TR4 TR4_NO TR4_NO oO oO TRI_NCTO TRS HDTC TR2 _NCTO TR3_NOTC TR3_NCTO TR4_NOTC TR4_NCTO N N DELAY ON DELAY ON DELAY TRi_NOTO TRI NCTC TRe_NOTO TReE_NCTC OFF DELAY OFF DELAY TRI_NOTC D COMMUNICATIONS INPUTS AC INPUTS oo C_PB2_NO olo INPUTI_ZNO INPUTZ_NO INPUT _NO INPUT4_NO INPUTL_NC INPUT2_NC INPUT3_NC INPUT4_NC IN1_PB_NC IN _PB_NC IN3_PB_NC Figure 3 3 Ladder symbols used with the SAMMS LV device sheet 2 STOP or OFF _ AUTO or Curent VARIABLE Unbalance VARIABLE O LJ l OFF or gns VARIABLE VARIABLE O HAND or Gals VARIABLE O Incomplete Sequence VARIABLE x O VARIABLE Ground External Fault Trip Alarm Reset Test C STOP or OFF Figure 3 4 Assignment of pushbuttons and light bars 14 3 Operating the SAMMS LV Device Input Assignments Starter Program Control Type PB4 PB6 Type Block S L E Y HH for faro L E E L CT S S dT Cd L _ ee para ___ Looa E w o i peet___ Looamewore sme ros o rv pace remove ome YY pees Revove owe dT rd dT Cd O Were HT Serica INTERLOCKED a SS NN H HS L E fio for _ LH vor
22. Guide Verify operation of mechanical interlock and replace Verify absence of voltage at terminals 1 2 and 3 with To disable incomplete sequence select F1 on the Jam conditions such as a blocked conveyor belt or Remedy If the unit trips one second after start verify that current transformer secondary input is present in the range of 100 mVAC to 3 54 VAC at terminals 1 2 and 3 with reference to 4 Verify that the coil voltage is 115 VAC at terminals 14 15 or 16 with reference to 13 when the motor is started Verify 115 VAC at terminal 7 with reference to 13 Correct conditions if necessary Call Siemens if unit continues to trip If the unit trips one second after a stop command verify the contactor is open Repair or replace the contactor if it is not functioning properly or adjust reference to 4 and at terminals 14 15 or 16 with reference to 13 If voltage is present define the source and reconnect so that the motor current only passes through the current transformer HHC press the ENTER key for one or more seconds and start the motor The incomplete sequence will remain disabled until the above procedure is repeated gear train cause a Sudden increase in motor current which can damage the motor s insulation in a short period of time Loss of load conditions such as a broken blade of an impeller or loss of back pressure of a pump result in a sudden decrease in motor current F16 on the HHC d
23. NTER key is disabled for this function 4 Press the Fjunction key to go to other functions F16 Trip Current 1 Press the LIST key to view the value of the current that caused the most recent trip 2 The UP DOWN and ENTER keys are disabled for this function 3 Press the F unction key to go to other functions 35 3 Operating the SAMMS LV Device F17 Current Unbalance 1 Press the LIST key to view the percentage current unbal ance When unbalance protection is disabled F9 OFF OFF is displayed The percentage unbalance is the ratio of the greatest deviation of the three phase currents from their average to the average of the three phase currents ex pressed as a percentage 2 The UP DOWN and ENTER keys are disabled for this function 3 Press the Fjunction key to go to other functions F18 Display Total Elapsed Run Time of the Motor 1 Press the LIST key to view the total elapsed running time of the motor The run time is displayed in tens of hours as follows Actual Number of Hours Displayed Time 65536 0 0 roll over The displayed value does not increment until a full hour or for elapsed times greater than 10000 hours a full ten hours have elapsed Internally however the elapsed time is maintained to the nearest 0 1 second Note The value can be reset to zero with F21 2 The UP DOWN and ENTER keys are disabled for this function 3 Press the Fjunction key to go to other functi
24. Operating the SAMMS LV Device Function Function Description Range Default Value Number SE Display or change for SAMMS LVE 0 9999 the control circuit number Enable disable incomplete sequence status F2 Display the size for single speed 1A 1B 1C 2A 2B 3 AS shown controller or the high speed size for 4 5 6 two speed motor controllers ES Display the low speed size for 1A 1B 1C 2A 2B 3 ati shown two speed controller F3 is OFF for 4 5 6 OFF single speed motor controllers F4 Select the full load current setting lc 0 3 1 5A for the size for single speed motor B 1 2 6A controller or the high speed size for 4 8 24A two speed motor controllers 10 36A 10 45A 20 90A 40 135A 80 270A 160 540A F4A Display the primary current if 5A arco of size in F2 Sar of size in F2 OFF denotes secondary CT s are used SAMMS sensors in use 159 S SA Select the full load current setting lc 0 3 1 5A for the low speed size for two speed 12 64 motor controllers F5 is OFF for single 4 8 24A speed motor controllers 10 36A 10 45A 20 90A 40 135A 80 270A 160 540A PRA Display the primary current if 5A ore of size in F3 Sar of size in F3 OFF denotes secondary CT s are used SAMMS sensors in use aa Select the overload trip class Enable disable autoreset of overload ON OFF and external trips Enable disable phase unbalance ON OFF protection Display the time to wait until th
25. R key to change the active setting to the selected setting The display becomes blank while you hold down the ENTER key and the SAMMS LV device stores the new setting 5 To exit the program mode press and hold the FJunction key for several seconds The display will show Pro9 Press the UP or DOWN key to change to the display mode 6 Press the F unction key to step through to another function 38 4 Troubleshooting 4 Troubleshooting the SAMMS LV Device This section discusses how to troubleshoot the SAMMS LV device The troubleshooting guide below lists basic errors that can occur while operating the SAMMS LV 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 LV 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
26. S NINANA NANANA INGEN NO ON 11 Ml 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 SIEMENS SAMMS LVX LED Current Unbalance LED on gt 40 LED Flashing 20 40 gt 100 lt 110 Start Inhibit Impending 440 Trip Overload Trip Overload Incomplete Sequence P Alarm Loss of Load or Pres Current Trip Loss of Load or Jam Trip CPU Failure or Low Voltage External Trip Alarm CPU Fault Ground Fault Trip Ground Fault O Current Unbalance Impending Trip UO Overload Trip Incomplete Sequence O External Trip Alarm Reset Test CJ Figure 2 2 Terminal block assignments 2 Installing the SAMMS LV Device enables the SAMMS LV to communicate with a remote super visory device Examples of the remote supervisory device include the Power Monitor display unit a standard personal computer running the Power Monitor PC communications and supervisory software or Siemens Microsoft Windows based SlEServe or WinPM software These supervisory devices and programs can communicate with the SAMMS LV device and allow it to operate in the ACCESS electrical distribution Top View Side View SAMMS 5 pin i O Module 12345 CM 1 Ribbon cable eee Figure 2 3 SAMMS LV device communications connections 10 Comm
27. SIEMENS SAMMS LV Siemens Advanced Motor Master System for Low Voltage Motors User s Manual SIEMENS SAMMS LVX Current Unbalance Current Unbalance E Impending N j rip l T Overload Overload Trip Incomplete Overload Sequence Trip External Trip Loss An rm ES 4 ad oF Load or H aan a a oe Current Trip CPU Incomplete Failure or Sequence Low Voltage Ground Fault External Trip Alarm Reset T est Manual No MCC 3298 A DANGER Electrical equipment contains hazardous voltages and high speed moving parts Will cause death serious personal injury or equipment damage Always de energize and ground the equipment before maintenance Maintenance should be performed only by qualified personnel The use of unauthorized parts in the repair of the equipment or tampering by unqualified personnel will result in dangerous conditions which will cause severe personal injury or equipment damage Follow all safety instructions contained herein IMPORTANT The information contained herein is general in nature and notintended for specific application purposes It does not relieve the user of responsibility to use sound practices in application installation operation and maintenance of the equip ment purchased Siemens reserves the right to make changes in the specifica tions shown herein or to make improvements at any time without notice or obligations Should a conflict arise bet
28. acilitate maintenance SAMMS LVX is a full function model applicable to all control needs from a simple across the line unit to a more compli cated reduced voltage scheme It includes all of the functions listed in table 3 7 Any of the standard control circuits listed in table 3 3 or a custom circuit may be downloaded The SAMMS LVX device accepts up to four remote inputs while SAMMS LVE accepts two remote inputs SAMMS LVE is a model of SAMMS LV tailored to across the line FVNR applications It provides all of the protective func tions of the SAMMS LVX device except that it has no jam Current Unbalance Impending Trip Overload Trip Incomplete Sequence External Trip Alarm Reset Test protection F23 loss of load protection alarm F24 or process current warning F22 functions Functions F3 and F5 associ ated with two speed applications are not available No provi sion for automatic reset F8 is provided SAMMS LVE accepts two remote inputs and provides one output to actuate a single contactor An alarm contact is not available with SAMMS LVE The SAMMS remote inputs are compatible with all PLCs and electromechanical remote control devices that have a 120VAC or 125VDC output signal 1 2 2 Advanced Low Voltage Motors For advanced protection of low voltage motors the SAMMS LV device uses a motor model algorithm that continually calculates the stator winding and housing temperature as a function
29. ault trip current Verify the presence of 12 VAC between terminals 5 and 6 of the SAMMS LV unit If control power is not present check the control power fuses or the control power transformer and replace if defective If control power is present push the RESET button to test lights and unit If the Ready light does not illuminate call Siemens Verify the SAMMS LV unit is in the Auto mode 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 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 Verify 115 VAC at terminals 7 and 8 with reference to 13 Perform lamp test by pressing RESET button Verify ladder diagram Verify SAMMS LV is in Local mode 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 Verify that the motor is stopped before changing parameters Verify that the correct password is in use If the password cannot be determined call Siemens Refer to Section 2 of this manual for instructions 41 Appendix A Technical Specifications Appendix A Technical Specifications of the SAMMS LV Device Motor Control Specifications Inputs SAMMS LVX SAMMS LVE Six pushbuttons Six pushbuttons Four remote inputs Two remote
30. ay mode 6 Press the F unction key to go to other functions F13 Set Programmable Timer 1 1 Press the LIST key to view the active setting for timer 1 The default setting is OFF If the timer is not used in the control circuit OFF is displayed and the UP DOWN and ENTER keys are disabled OFF is also displayed for a setting of 0 seconds The timer may be adjusted from O 200 seconds in one second increments 2 To change the setting you must be in program mode 3 To change the setting press the UP or DOWN key until the desired value is displayed then press the ENTER key to select the setting The display blanks while the ENTER key is pressed 4 Repeat Step 3 if you select an incorrect setting 5 To exit the program mode press and hold the Fjunction key for several seconds The display will show ProY Press the UP or DOWN key to change to the display mode 6 Press the Flunction key to go to other functions F14 Set Programmable Timer 2 1 Press the LIST key to view the active setting for timer 2 The default setting is OFF If the timer is not used in the control circuit OFF is displayed and the UP DOWN and ENTER keys are disabled OFF is also displayed for a setting of 0 seconds The timer may be adjusted from O 200 seconds in one second increments 2 To change the setting you must be in program mode 3 To change the setting press the UP or DOWN key until the desired value is displayed the
31. cated enough to offer customized protection to particular motors To customize protection to the motor enter the follow ing nameplate data e full load current setting F4 e service factor F6 e motor ambient temperature FO 3 11 Motor Ambient Temperature Motors are used in a wide range of temperatures However motors designed according to NEMA standards are rated at 40 C ambient temperature The SAMMS LV allows you to decrease or increase the motor s thermal capacity according to the motor s ambient tempera ture You can select ambient temperature from O to 70 C in increments of 5 C with HHC function FO Important Do not use this feature with motors rated for ambient temperature other than the standard 40 C 3 12 Protection Curves and Overload Classes The specific motor protection curve selected depends upon the overload class setting The overload class is defined as the maximum tripping time in seconds for a current level of 600 of the full load current or l The typical starting current of motors is 600 of l For example an overload class setting FLC 17 3 Operating the SAMMS LV Device Max Allowable Stator Winding Temperature N o _ o o Winding Temperature Temperature Rise 1000 2000 3000 4000 5000 6000 7000 Time in Seconds Motor Start 20 Overload Motor Start S o Motor Current o gt
32. cess Current Warning SAMMS LVX Only It is often convenient to have an indication that the load current is above its normal operating level so that the process can be checked ana if necessary adjusted You can set the process current warning from 0 displayed as OFF to 100 of the full load current with HHC function F22 As long as the motor running current exceeds the process current warning level the External Trip LED flashes Process current warning is locked out for five times the class time after a start or a direction or speed change 3 Operating the SAMMS LV Device 3 19 Stator Protection By selecting the overload class slightly greater than or equal to the motor s starting time the motor model defines an energy Pt value In this value equals 600 of the motor s full load current and t equals the overload class selected If the amount of energy exerted by the motor during start stall or under locked rotor condition exceeds the amount of energy defined by the overload class selected the SAMMS LV device will trip This protects the motor s winding against excessive heat build up For example a typical motor starts within 3 to 4 seconds By selecting an overload class 4 or 5 you can safely start the motor hot or cold and without nuisance tripping This also provides protection against stall time exceeding 4 or 5 seconds assuming the locked rotor current equals 600 ofthe motor s full load current See Figur
33. circuit loaded into the SAMMS LV device Figure 2 1 shows a typical connection diagram for the SAMMS LV device If Siemens does not supply the motor controller the retrofitter or original equipment manufacturer should develop an equiva lent electrical scheme 2 4 1 Wiring Guidelines You must observe the following guidelines when installing the SAMMS LV device and connecting it with its peripheral de A DANGER Hazardous Voltages Will result in death serious injury or property damage Turn OFF and lock out all incoming AC power and all foreign power sources before attempting to work on the SAMMS LV device Note Failure to follow these guidelines can cause pickup of unwanted signals resulting in erratic operation and damage to the SAMMS LV device Guideline 1 Separate the low voltage 115 VAC or less from the higher voltage conductors 460 VAC or higher as much as possible If low voltage and medium voltage wires must cross paths make sure that they intersect at a right angle Guideline 2 To eliminate noise coupling install all twisted pairs or wrap wires in such a way that a complete twist or wrap occurs at least every two inches Guideline 3 Place the low voltage leads near the controller chassis Guideline 4 Use at least AWG 14 stranded copper wire for any low voltage control wiring that you route outside the motor controller enclosure Connections to the SAMMS LV unit must be made with wire no larger t
34. circuit will be shown 3 Press the UP or DOWN key to scroll through the range of circuit numbers until the desired circuit number appears on the display 4 Press the ENTER key to change the active setting to the selected setting The display becomes blank while you hold down the ENTER key and the SAMMS LV device stores the new setting 5 To exit the program mode press and hold the Flunction key for several seconds The display will show Pro9 Press the UP or DOWN key to change to the display mode 6 Press the Flunction key to step through to another function 7 To enable or disable incomplete sequence press the EN TER key for a period of one second or more A will be displayed after the F1 on the HHC if incomplete sequence is enabled The SAMMS LV is shipped from the factory with the incomplete sequence enabled F2 Size for Overload Relay 1 Overload relay 1 protects single speed motors and two speed motors running on high speed The possible values are 1A 1B 1C 2A 2B 3 4 5 and 6 Use the following procedure to display the size for overload relay 1 1 Press the LIST key to view the size selected for overload relay 1 2 To change the setting you must be in program mode 3 Press the UP or DOWN key to scroll through the range of settings until the selected setting appears on the display 4 Press the ENTER key to change the active setting to the selected setting The display becomes blan
35. d correctly the display reads donE and pressing ENTER gives access to the functions in program mode 6 Ifthe password was entered incorrectly the display will read Err Press the ENTER key to return to program mode and try again 3 28 2 SAMMS LV Functions FO Ambient Temperature 1 Press the LIST key to view the ambient temperature se lected The default value is 40 C and the range of possible values is from 0 C to 70 C in increments of 5 C 2 To change the setting you must be in program mode 3 Press the UP or DOWN key to scroll through the range of settings until the selected setting appears on the display 4 Press the ENTER key to change the active setting to the selected setting The display becomes blank while you hold down the ENTER key and the SAMMS LV device stores the new setting 5 To exit the program mode press and hold the F unction key for several seconds The display will show Pro Press the UP or DOWN key to change to the display mode F1 Control Circuit Number and Incomplete Se quence Status 1 Press the LIST key to view the control circuit number programmed at the factory The circuit numbers range from O through 9999 The UP DOWN and ENTER keys become disabled 2 For SAMMS LVE to change the settings you must be in the program mode The available selections are program blocks 10 16 refer to table 3 3 If you have loaded a custom circuit the designation for that
36. devices in most industrial equipment environments Unless the device is designed for specific requirements you should install the SAMMS LV device and its controller in an area where the following conditions exist Ambient air must be free of dirt combustible vapor steam electrically conductive or corrosive material e Area around the controller must provide access to the equipment for inspection maintenance and operation 2 3 Mounting the Device The SAMMS LV device mounts in a front door of Siemens motor control center MCC or on the front door of any motor controller 2 4 Connecting the Device This section contains general guidelines that you should follow to connect the SAMMS LV device These guidelines include instructions for routing the wiring connecting the wires and grounding the device Use these guidelines to install the SAMMS LV device and its peripheral devices in a motor controller Also use these guidelines to connect the motor controller to the motor When Siemens supplies a SAMMS LV device as partofa motor controller Siemens personnel install the wiring between the SAMMS LV device and its peripheral devices in the motor controller at the factory The schematic diagram used contains three components a connection diagram a ladder diagram and a wiring diagram The connection diagram illustrates the connections between the SAMMS LV device and its peripheral devices The ladder diagram illustrates the control
37. display will show Pro9 Press the UP or DOWN key to change to the display mode 6 Press the Flunction key to step through to another function F5A 5A CT Primary Current Selection for Overload Relay 2 SAMMS LVX Only SAMMS LV is normally used with SAMMS sensors to provide the current input signals to the device Optionally SAMMS LV may be used with conventional 5A secondary current trans formers 1 Press the LIST key to view the sensor in use for overload relay 2 If standard SAMMS sensors are used the display will read OFF If 5A secondary CT s are in use the CT primary current will be displayed 2 To change the setting you must be in program mode 3 Press the UP or DOWN key to scroll through the range of settings until the selected setting appears on the display 4 Press the ENTER key to change the active setting to the selected setting The display becomes blank while you hold down the ENTER key and the SAMMS LVX device stores the new setting 5 To exit the program mode press and hold the F unction key for several seconds The display will show ProY Press the UP or DOWN key to change to the display mode 3 Operating the SAMMS LV Device 6 Press the F unction key to step through to another function F6 Service Factor 1 Press the LIST key to view the active service factor 1 0 or 1 15 The factory default is 1 15 A service factor of 1 15 adjusts the overload trip thresholds up by 15
38. e Function and UP and DOWN keys 3 Then locate and follow the steps provided with the function you wish to perform 3 28 1 Program Mode Passwords To access the functions in program mode the user is required to enter a password The default password is 0000 and may be changed at any time To enter the password and have access to program mode 1 Press and hold the FJunction key for several seconds until dISP is displayed 2 Press the UP or DOWN key to change to the program mode The display reads Prog 3 Press the ENTER key and the display shows HHHO the prompt for entering the password 4 Press the UP or DOWN key to select the first digit then press ENTER The display reads HHO 5 Continue to select password digits and press ENTER to enter each digit 6 After correctly entering the four digit password the display reads and pressing ENTER gives access to the functions in program mode 7 If the password was entered incorrectly the display will read Err Press the ENTER key to return to program mode and try again 29 3 Operating the SAMMS LV Device Press and hold F key Display Program mode mode Y Prompt for password l To select To select function digit for viewing
39. e 3 10 3 20 Repetitive Starts The motor model allows repetitive starts without nuisance tripping while protecting the motor against overload and stall conditions Repetitive starts can occur as long as the following conditions are met 1 The energy exerted by the motor during start does not exceed the energy defined by the overload class selected 2 The motor winding temperature does not exceed the maxi mum temperature allowed 3 The SAMMS LV is not in start inhibit See Section 3 21 For example a motor starting from cold condition could have 4 or more typical starts of 5 seconds without nuisance tripping and without damaging the motor insulation Figure 3 11 shows a multi start scenario for an open drip proof motor Maximum winding temperature limit __ Motor first g 5 o 5 l sd Winding temperature La Motor 5th start Motor stopped Figure 3 11 Multi start scenario for an open drip proof motor 3 21 Start Inhibit When the motor temperature reaches the maximum values allowed the SAMMS LV device trips If you attempt a restart the overload LED flashes and the motor will not start until the motor winding and rotor temperatures cool down to the full load temperature HHC function F25 displays the motor winding temperature as a percentage of the full load temperature HHC function F10 displays the time to enable restart in seconds 3 22 Cooling Time Constants The motor time constan
40. e motor Real Time Value can be restarted Applies after an overload trio with the winding or housing temperature above the maximum allowed for restarting F11 Enable disable the emergency restart ON OFF capability Table 3 8 Motor control and protection functions page 1 of 3 27 3 Operating the SAMMS LV Device Function Function Description Range Default Value Number F12 Select ground fault protection or ON OFF NA warming ON means protection OFF means warning NA 1A NWO Select ground fault pick up current 1A 1 5A 1B 2A 5A 2A FLC 2A FLC 2A I FLC 2A I FLC 2A 1 FLC 5A ric 10A FLC value lacis the value of lc for OLR 2 if F3 is not set to OFF If F3 is OFF fic Is the value of L for OLR 1 second Display the average line current and the 1A 0 0 16 84 0 1A individual line currents 1B 0 0 67 14 0 1A 1C 0 0 99 9A 0 1A 100 268A 1A 2A 0 0 402A 1A 2B 0 0 503A 1A 3 0 0 1006A 1A 0 0 1509A 1A 0 0 3018A 1A 0 0 6036A 2A Display the most recent trio current 0 0 16 84 0 0 67 14 0 0 99 94 100 268A 0 0 402A 0 0 503A 0 0 1006A 0 0 1509A 0 0 3018A 0 0 6036A F17 Display the percentage current unbalance OFF is displayed if unbalanced protection is off Table 3 8 Motor control and protection functions page 2 of 3 28 3 Operating the SAMMS LV Device Function Function Description Range Default Value Number F18 NA
41. e tem peratures are compared to the allowable temperature limits for the motor s winding and housing On the basis of this compari son the SAMMS LV device either stops the motor or allows it to run For example consider the motor winding temperature rise illustrated in Figure 3 5 The motor starts for 5 seconds and runs for a period of 2200 seconds Then the motor is subjected to a running overload condition that raises the winding tempera ture to the maximum allowable winding temperature rise result ing in an overload trip At this temperature the motor cannot start until the motor winding temperature cools down to the full load temperature The motor can then start and run at full load current In the motor model the greatest of the root mean square rms current values for the motor phases is converted into a heat like quantity This is done by a mathematical function that depends on the ratio of the rms current to the full load current set for the motor The function is based not only on ideal overload characteristics but also on empirical motor data The heat like quantity is analogous to an input source of current to the electric circuit analog The exact values of some of the various elements in the circuit depend on nameplate data entered for the particular motor being protected Unlike the method of protection in conventional overload relays the motor model is general enough to protect many classes of motors yet sophis ti
42. ecting the motor Statistical Data about the Motor The microprocessor s memory stores statistical data about the motor and displays this data on the Hand Held Communicator HHC Real Time Metering Data The Hand Held Communicator displays real time metering data Local Displaying of Motor and Circuit Data The HHC and the eight 8 diagnostic LEDs display motor and control circuit data The eight 8 diagnostic LEDs are located on the front panel of the device Communicating with Other Devices The SAMMS LV device communicates with other devices via the ACCESS system When connected to the ACCESS system the SAMMS LV device provides two way communication with the Power Monitor display and monitoring unit an IBM PC compatible computer running the Power Monitor PC com munications and supervisory software or another supervisory device This ability allows you to control and monitor motors from a centralized location You can have remote access to all SAMMS LV data such as diagnostics statistical data real time metering and controller status If you would like to learn more about the ACCESS system refer to Installing the ACCESS System manual no SG 6028 1 Introduction SAMMS LV Model SAMMS LVE SAMMS LVX Application Across the line non reversing L Across the line reversing Two speed one winding constant or variable torque Two speed one winding constant horsepower Two speed two winding Reduced voltage aut
43. ed and the motor current drops below the pickup current value within 360 msec the External Trip LED flashes but the SAMMS LV does not trip 2 To change the setting you must be in program mode 3 To change the protection setting press the UP or DOWN key to display ON or OFF options then press ENTER to select the setting that is shown The display blanks while the ENTER key is pressed 4 Return to Step 3 if you select an incorrect setting 5 To exit the program mode press and hold the Flunction key for several seconds The display will show Prog Press the UP or DOWN key to change to the display mode 6 Press the FJunction key to step through to another function F24A Loss of Load Pickup Current SAMMS LVX Only 1 Press the LIST key to view the active setting The range of possible values is between 20 and 95 to the FLC in increments of 5 The factory default is 50 2 To change the setting you must be in program mode 3 To change the setting press the UP or DOWN key until the desired setting is displayed then press the ENTER key to select the setting The display blanks while the ENTER key is pressed 4 Return to Step 3 if you select an incorrect setting 5 To exit the program mode press and hold the F unction key for several seconds The display will show Prog Press the UP or DOWN key to change to the display mode 6 Press the F unction key to go to other functions F25 Percentage
44. ed or direction change The range of settings is in 1 increments from zero OFF through 100 The factory default is OFF 2 To change the setting you must be in program mode 3 To change the setting press the UP or DOWN key until the desired setting is displayed then press the ENTER key to select the setting The display blanks while the ENTER key is pressed 3 Return to Step 3 if you select an incorrect setting 5 To exit the program mode press and hold the Flunction key for several seconds The display will show ProY Press the UP or DOWN key to change to the display mode 6 Press the Flunction key to go to other functions F23 Jam Protection SAMMS LVX Only 1 Press the LIST key to view the active jam protection setting ON or OFF The factory default setting is ON If jam protection is enabled ON and the motor running current increases to the pickup current value within 360 msec the motor will trip off line and the External Trip LED is steadily lit The function is disabled for five times the class time after starting or after a speed or direction change 2 To change the setting you must be in program mode 3 Operating the SAMMS LV Device 3 To change the protection setting press the UP or DOWN key to display ON or OFF then press ENTER to select the setting that is shown The display blanks while the ENTER key is pressed 4 Return to Step 3 if you select an incorrect setting 5 To exit the pro
45. emark and Windows is a trademark of Microsoft Corporation IBM is a registered trademark of Intemational Business Machines Inc 1 Introduction 1 Introduction The SAMMS LV electronic motor control and protection device is designed and manufactured in accordance with the latest applicable provisions of the National Electric Code Underwriters Laboratories Standards and Procedures NEMA Standards and the National Electric Safety Code You must thoroughly read and understand this user s manual before you begin any work with the SAMMS LV device Successful appli cation and operation of this equipment depends as much upon proper installation and maintenance by the user as it does upon the careful design and fabrication by Siemens The purpose of this instruction manual is to assist the user in developing safe and efficient procedures for the installation maintenance and use of the equipment Contact the nearest Siemens representative if any additional information is desired A DANGER Electrical equipment operates at high voltages When operated improperly this equipment will cause death serious personal injury and property damage To avoid electrical shock burns and entanglement in moving parts this equipment must be installed operated and maintained only by qualified persons thoroughly familiar with the equipment instruction manuals and drawings Qualified Person For the purpose of this manual and produc
46. est pushbutton The Impending Trip and Phase Unbalance LEDs go off and the Overload Trip LED illuminates for two seconds If the SAMMS LV device is tripped it is automatically reset at the end of the overload relay test Note that this test checks the electronic circuitry but does not replace a test in which actual power current is passed through the primary circuit Use the following procedure to reset the SAMMS LV device after a trip event 1 Press the Reset Test pushbutton 2 Release the Reset Test pushbutton The device resets the alarm LEDs If the motor has cooled sufficiently you can restart the motor 3 3 Motor Control You can configure the SAMMS LV device to perform many motor starting and control functions These functions include basic across the line to more complicated reversing two speed and reduced voltage starting The SAMMS LV device stores in its memory the executable code representing the ladder diagram for the user s control application The SAMMS LV device and ladder diagram code replace the conventional control logic defined by wired interconnection of electrome chanical timers control relays pushbuttons selector switches and pilot lights A library of over 70 standard ladder diagrams available for the SAMMS LV device covers most applications In addition to the standard ladders you can construct custom ladder diagrams using optional software to handle special applications Figures 3 2 and 3 3
47. f 10 to 60 Hz No hardware failures at 15 kV at any point in the front of the unit 5 kV repeated pulses per UL 991 and ANSI C37 90A Up to 95 MHz and 61 3 V M field strength 12 VAC 10 15 supply AVA 120 VAC or 125 VDC 10 15 120 VAC 10 15 1 0A for each output energized Maximum leakage current allowed 5mA 50 Hz 4 5 60 Hz 5 45 Appendix A Technical Specifications Catalog Number SAMMS LV Model Number SAM4 SAMMS LVE SAM5 SAMMS LVX Configuration Control Type L Local and or Remote Control Alarm Contacts Configuration SAMMS LVX Only 0 None 1 Normally Closed Contacts N C 2 Normally Open Contacts N O Alarm Contacts Output SAMMS LVX Only A Any of the Below B Impending Trip C Overload Trip D External Trip E Ground Fault F None Loss of Voltage SAMMS LVX Only L Loss of Voltage Ridethrough 0 None Ground Fault G Ground Fault Protection 0 None Control Circuit Number Control Circuit Number Loaded at Factory 0000 None Figure A 1 Catalog Number and Configuration Breakdown for SAMMS LV 46 Appendix A Technical Specifications 4X 125 DIA X
48. f the current unbalance as the maximum deviation from the average of the three phase cur rents divided by the average of the three phase currents In case of loss of a phase the unbalance is 100 in a three wire ungrounded system With phase unbalance protection enabled current unbalances of between 20 and 40 cause the Phase Unbalance LED to flash as a warning If the unbalance increases to above 40 the Phase Unbalance LED illuminates solidly and overload tripping accelerates The effect of an unbalance of greater than 40 is to shift the motor protection curve in the direction of faster tripping You enable the phase unbalance protection using HHC function F9 e Enabled ON e Disabled OFF With phase unbalance protection enabled HHC function F17 displays the percentage of current unbalance Both functions display OFF if phase unbalance protection is disabled 22 3 15 Dual Overload Protection SAMMS LVX Only Because the high speed and low speed currents differ in two speed motors different full load current settings are often required In such applications use function F5 to select the full load current for low speed operation 3 16 Jam Protection SAMMS LVX Only Certain mechanical loads especially those containing gears are susceptible to jamming Jam protection can prevent dam age to the motor and the driven equipment by quickly tripping the motor off line in the event of a jam If you have enabled jam
49. g temperature as of full load temperature se S E IPCC pa A Table 3 7 SAMMS LV models and functions 25 3 Operating the SAMMS LV Device 3 27 1 The F unction Key When you press the Fjunction key the function mode is selected and the HHC displays the number of the selected function preceded by F With the HHC in the function mode use the UP and DOWN keys to step from one function to the next 3 27 2 The LIST Key When you press the LIST key the display mode is selected and the HHC displays the value corresponding to the selected function If the selected function is a set point the HHC displays the actual setting If the selected function is a measured quantity the HHC displays the value of the measured quantity In the display mode use the UP and DOWN keys to step through the range of possible set points for the selected function Pressing the LIST key returns the active setting to the display There is one occasion when the LIST key is disabled making the corresponding functions inoperative In a SAMMS LV device with autoreset disabled at the factory the LIST key has no effect for F8 3 27 3 UP and DOWN Keys Use the UP and DOWN keys to step through the functions while the HHC is in the function mode When the HHC is in the display mode use the UP and DOWN keys to step through the values for a selected function You can use the keys in three ways 1 Single step press the key and release it 2 Slow scroll
50. gram mode press and hold the F unction key for several seconds The display will show Prog Press the UP or DOWN key to change to the display mode 6 Press the F unction key to step through to another function F23A Jam Pickup Current SAMMS LVX Only 1 Press the LIST key to view the jam current pickup value in use The range of possible values is between 120 and 400 to the FLC in increments of 5 The factory default is 200 2 To change the setting you must be in program mode 3 To change the setting press the UP or DOWN key until the desired setting is displayed then press the ENTER key to select the setting The display blanks while the ENTER key is pressed 4 To exit the program mode press and hold the F unction key for several seconds The display will show Prog Press the UP or DOWN key to change to the display mode 5 Press the Fjunction key to step through to another function F24 Loss of Load Protection or Warning SAMMS LVX Only 1 Press the LIST key to view the active loss of load setting ON or OFF The factory default setting is warning OFF and the other setting is protection ON This function is disabled for five times the class time after starting or speed or direction changes a When protection ON is selected and the motor current drops below the pickup current value within 360 msec the External Trip LED will light and the SAMMS LV trips b When warning OFF is select
51. han AWG 14 Guideline 5 To avoid ground loops ground each motor controller at a single ground point The top portion of the device contains 16 terminal locations for connecting control power leads power supply ground inputs and outputs Refer to Figure 2 2 for a description of each terminal block assignment 2 Installing the SAMMS LV Device CURRENT SENSOR DETAIL A CONVENTIONAL CT S WITH SA SECONDAR x1 al CIRCUIT HI er DISCONNECT DEVICE X S H1 CT x1 po s L H1 CT H1 gt bei SS CIRCUIT SHOWN WITH SAMMS SENSORS SIZES 1A 6 FOR CIRCUIT USED WITH SA ACT SEE DETAIL A CTGM1 O SAMMS FUNCTIONAL EQUIVALENT CT2 NCY CTGM1 STOP a 11 RUN ep Ao REM RELAY SAMMS LV x R Figure 2 1 Full voltage non reversing connection diagram 2 Installing the SAMMS LV Device 2 4 2 Grounding the Device As stated in Guideline 5 ground each motor controller at a single ground point The grounding path to earth must be permanent and continuous It must also be able to safely conduct ground fault currents that may occur in the system to ground through minimum impedance The earth ground doe
52. he overload class 5 Tripping time at 1 5 x ric within two minutes for warm conditions for all classes 1 1 0 05 X lec for motors with 1 00 service factor and 1 2 0 05 X lec for motors with 1 15 service factor 20 minutes 1 15 x l sc for motors with service factor 1 Sudden increase of the motor running current Pick up current adjustable from 120 to 400 in increments of 5 of le Pick up time 360 msec Default value 200 I ric Sudden decrease of motor running current Pick up current adjustable from 20 to 95 in increments of 5 ofl rc Pick up time 360 msec Default value 50 ric Settings from 0 to 100 of lac 5 of overload trip curve values 2 repeat accuracy Response time after 1 second Shifted trip threshold value to 0 9 x esc at 40 phase unbalance Response time after overload class in seconds Pick up time 360 msec Pick up current Overload Relay Size Pick up Current Default 1A 1 5A 1 5A 1B 2A 5A 5A 1C 2A Fic 5A 2A 2A Fic 10A 2B 2A Fic 10A 3 2A Fic 10A 4 2A Fic 10A 5 5A Fic 10A 6 10A fic 20A lc is the value of p c for OLR 2 if F is not set to OFF If F3 is OFF ric is the value of lec for OLR 1 Motor ambient temperature adjustable 0 70 C in increments of 5 C Default value 40 C 43 Appendix A Technical Specifications Statistical Data Elapsed motor running time x10 Range 0 0 to 6553 65 536 hours Unit increments 10 hour
53. illustrate the ladder symbols representing input and output devices available for the SAMMS LV device The circular symbols represent output devices such as contactor coil drivers pilot LEDs on the front panel of the SAMMS LV device software time delay relays and software control relays All other symbols represent input devices such as software auxiliary contacts remote AC inputs front panel pushbuttons and software timer instantaneous and timed contacts 11 3 Operating the SAMMS LV Device 3 4 Output Devices You can use the following SAMMS LV output devices AC Outputs The SAMMS LVX device provides up to three AC coil drivers capable of driving contactors up to size 6 while SAMMS LVE provides one coil driver Control Relays The device provides up to eight software controlled relays These relays are helpful in local two wire and other applications requiring maintained contacts Timing Relays The SAMMS LV device contains four internal software timing relays You can configure all four timers as on delay timers however ifneeded you can configure the two adjustable timers timing relays TR1 and TR2 as either on delay or off delay timers Using the Hand Held Communicator you can program timing relays TR1 and TR2 from O through 200 seconds functions F13 and F14 Timing relay TR3 has a fixed 1 second delay and timing relay TR4 has a fixed 30 seconds delay Table 3 1 illustrates the type of timers used on the device and thei
54. inputs Outputs SAMMS LVX SAMMS LVE Three coil drivers One coil driver Three light bars Two light bars One programmable alarm contact Current unbalance Impending trip Overload trip External trip Incomplete sequence Ground fault CPU fault Ready Light bar flashes timer timing Impending trip LED flashes motor temperature warning Overload trip LED flashes start inhibit CPU LED ON momentary loss of voltage Diagnostic LEDs XA XA XA XX XA XX XA XX X Current Ranges Overload Relay Size 0 3 1 5A 1A 1 2 6A 1B 4 8 24A 1C 10 36A 2A 10 45A 2B 20 90A 3 40 135A 4 80 270A 5 160 540A 6 Permissible CT Ratios 5A secondary CT ratios functions Overload Relay Size Permissible CT Ratios F4A F5A 1A N A 1B N A 1C 30 5 40 5 2A 30 5 40 5 50 5 2B 30 5 40 5 50 5 3 30 5 40 5 50 5 75 5 100 5 150 5 4 50 5 75 5 100 5 150 5 5 100 5 150 5 200 5 250 5 300 5 400 5 6 200 5 250 5 300 5 400 5 500 5 600 5 42 Appendix A Technical Specifications Overload Specifications Overload classes Trip Characteristics Tripping threshold Tripping time Mechanical jam protection SAMMS LVX only Loss of load protection SAMMS LVX only Process current warning SAMMS LVX only Accuracy Phase unbalance protection Equipment ground fault protection Ambient temperature Overload classes 2 through 23 with one second increments Tripping time at 6 x I sc 95 of t
55. ion occurs so that the motor can be restarted You can also use the Reset Test pushbutton to perform a lamp test or an overload relay test 3 2 1 Performing a Lamp Test To test the diagnostic LEDs the control LEDs and the light bars on the front panel use the following procedure 1 Press and hold the Reset Test pushbutton for one to two seconds 2 Release the Reset Test pushbutton All LEDs and light bars on the front panel illuminate for two seconds If a fault or trip condition exists when you press the Reset Test pushbutton the device performs a reset instead of a lamp test O GPU Fault Ego 2 5 Figure 3 1 Front view of SAMMS LV 3 2 2 Performing an Overload Relay Test You may perform an overload relay test whenever the motor is stopped Use the following procedure to perform an overload relay test 1 Press and hold the Reset Test pushbutton for at least the duration of the class time The class time is set by accessing function F7 If you need to know how to access function F7 see Section 3 28 If you release the Reset Test pushbutton before the duration of the class time the device performs a lamp test If a fault or trip condition exists when you press the Reset Test pushbutton the device performs a reset instead of a lamp test 2 Continue to hold down the Reset Test pushbutton After reaching the class time duration the Impending Trip and the Phase Unbalance LEDs illuminate 3 Release the Reset T
56. iow aca IN paso remove owned S SY dT rd LS sme _ YR ress toca swine fr fio fer _ pass _ Looameworeswme vor iow aca _ paar remove owned dT SY dT i res eoem oH Pee toca sme oo ow fer Y 7 LH or fo aca L dT dT SY H HS LL Table 3 3 Standard control circuits 15 3 Operating the SAMMS LV Device Input Assignments Starter Program Control Type PB4 PB6 Type Block aa te fooamswme oo r A swine REOTEZ IRE Top _ stanT_ ao for faro _ peo __ Looauneworezwme E o foe faro _ paso _ Looavneworeswme or far pes remos owned CT S dT i C O H e loom ame iO EEN UI foo stam IN pass roca swine ReMOTEZ IRE Top _ stanT_ fro for faro _ pass _ Loomuneworezwme por Y Y no for foro pasr__ Looauneworeswme pros for pass Remove owned AAN REMOTE SwiRE H roca owe fe for i id T momom feo jom IN roca swine REMOTEZ D err mo or pao e D 7 rooaRemove swine stos orar mozme ENS EEN CIC AUS ENANA USCIS CN w G SC ETICO _ USCIS CN w LocaneuoTezwme E 7 frevore mn ETICO ANOS HS Table 3 3 Standard control circuits continued FF FF FF ON D feo 7 Ez ON 16 3 Operating the SAMMS LV Device 3 7 Incomplete Sequence Sometimes the motor contactors do not respond in a timely manner to start stop transition speed or direction change commands from the controller If the
57. isplays the extemal trip current at the time of the trip In any case determine the reason for the external trip and correct the problem before restarting the motor If the external trip LED flashes and the motor continues to run it indicates loss of load warning or process current warning Verify voltage between terminals 5 and 6 is more than 10 VAC If fault persists call Siemens 4 Troubleshooting Error Condition Ground Fault 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 Troubleshooting Guide 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 Usually indicates lack of control power Indicates connection or operator error Indicates connection error Usually indicates programming error Operator error Connection error Usually indicates motor is running or incorrect password Usually indicates improper grounding or noise interference Remedy The cause of the ground fault should be determined and removed before using the motor again F16 on the HHC displays the ground f
58. k while you hold down the ENTER key and the SAMMS LV device stores the new setting 5 To exit the program mode press and hold the Flunction key for several seconds The display will show ProY Press the UP or DOWN key to change to the display mode F3 Size for Overload Relay 2 SAMMS LVX Only Overload relay 2 protects two speed motors running on low speed The possible values are 1A 1B 1C 2A 2B 3 4 5 6 and OFF OFF appears for single speed motors Use the following procedure to display the size for overload relay 2 1 Press the LIST key to view the size selected for overload relay 2 2 To change the setting you must be in program mode 3 Press the UP or DOWN key to scroll through the range of settings until the selected setting appears on the display 4 Press the ENTER key to change the active setting to the selected setting The display becomes blank while you hold down the ENTER key and the SAMMS LV device stores the new setting 5 To exit the program mode press and hold the Flunction key for several seconds The display will show ProY Press the UP or DOWN key to change to the display mode 31 3 Operating the SAMMS LV Device F4 Full Load Current for Overload Relay 1 1 Press the LIST key to view the active full load current setting for overload relay 1 The setting should normally be the full load current as shown on the motor nameplate high speed for two speed machine The ra
59. lications ranging from simple across the line starters to complicated reduced voltage start ers With optional software the specified control circuit can be loaded either from the library or from a modified version into the microprocessor s memory in the factory or on site using an IBMO PC compatible computer If you would like to learn more about this software package refer to SAMMS Custom Soft ware Manual Bulletin CP 3291 Highly specialized control circuits can be developed and exist ing circuits can be modified using an optional IBM PC compat ible software package This software uses conventional engi neering symbols along with pull down menus and a mouse to draw ladder diagrams When you have finished drawing the diagram the software translates the diagram into microproces sor machine code and downloads it into the SAMMS LV device s memory 1 2 5 Using the Standardized Control Panel The SAMMS LV device can be used for local and or remote control The SAMMS LVE device provides two light bars while the SAMMS LVX model provides three light bars Each model includes six pushbuttons with lights and tactile feedback These light bars and pushbuttons are programmed for the various functions of the control circuit used The test reset button is used to test and reset the overload function and to test the front panel lights Diagnostics Eight diagnostic LEDs located on the front panel provide information about conditions aff
60. mark of Siemens AG
61. n press the ENTER key to select the setting The display blanks while the ENTER key is pressed 4 Repeat Step 3 if you select an incorrect setting 5 To exit the program mode press and hold the F unction key for several seconds The display will show ProY Press the UP or DOWN key to change to the display mode 6 Press the Flunction key to go to other functions F15 Display Current 1 Press the LIST key to view the instantaneous line currents or the average instantaneous line current The LIST key is disabled for full voltage part winding starters For instanta neous line currents the display shows the phase designator A b or C in the left most character followed by three significant digits of the value of the current For the average instantaneous line current four digits are displayed without a phase designator a Because only four characters can display at a time individual line currents of 1000 amps and above are displayed as three dashes following the phase designa tor e g A b For sizes 1A 1B and 1C the current is displayed to the nearest 0 1 amp for currents less than 100 amps for 100 amps and above currents are displayed to the nearest 1 amp For sizes 2A 2B 3 4 and 5 the current is displayed to the nearest 1 amp For size 6 current is displayed to the nearest 2 amps 2 To view another line current press the UP or DOWN key to scroll through the four selections 3 The E
62. nge of possible settings and the factory default value depend on the size displayed in F2 as follows ssa Relay Size Range Ca oe n o e osm a 1 2 To change the setting you must be in program mode 3 Press the UP or DOWN key to scroll through the range of settings until the selected setting appears 4 Press the ENTER key to change the active setting to the selected value The display becomes blank while you hold down the ENTER key and the SAMMS LV device stores the new setting If you make an incorrect selection repeat steps 3 and 4 5 To exit the program mode press and hold the F unction key for several seconds The display will show Prog Press the UP or DOWN key to change to the display mode 6 Press the F unction key to step through to another function F4A 5A CT Primary Current Selection for Overload Relay 1 SAMMS LV is normally used with SAMMS sensors to provide the current input signals to the device Optionally SAMMS LV may be used with conventional 5A secondary current trans formers 1 Press the LIST key to view the sensor in use for overload relay 1 If standard SAMMS sensors are used the display will read OFF If 5A secondary CT s are in use the CT primary current will be displayed 2 To change the setting you must be in program mode 3 Press the UP or DOWN key to scroll through the range of settings until the selected setting appears on the display 4 Press
63. on to full voltage commences as a fail safe measure If before the 30 second timer times out the motor current drops to below the full load current setting the transition commences The state of the RUN contactor whose auxiliary contact is connected to Remote input 4 pin 9 is checked one second after the transition If the contactor is not closed an incomplete sequence trip occurs 3 9 Ridethrough Upon Loss of Power SAMMS LVX Only fa motor is running and control power is lost the motor restarts automatically with two wire control as Soon as power is re stored With three wire control you must restart the motor manually The optional ridethrough feature available with SAMMS LVX allows three wire controls to ride through power outages of up to one second This feature is especially useful where the power system is subject to momentary interruptions If while the motor is running power is lost to a three wire control having the ridethrough option the contactors are opened to prevent chattering and then reclosed automatically if power returns within one second The ridethrough option should be used with caution because of the possibility of motor damage in the event that the contactor recloses while the motor residual voltage is significantly out of phase with the system supply voltage 3 10 Overload Protection The motor overload protection function is based on calculating the motor s winding and housing temperatures Thes
64. ons F19 Number of Motor Starts 1 Press the LIST key to view the number of motor starts The number of starts is displayed in tens of starts as follows Actual Number of Starts Displayed Number 65536 0 0 roll over Note The value can be reset to zero with F21 2 The UP DOWN and ENTER keys are disabled for this function 3 Press the FJunction key to go to other functions 36 F20 Number of Overload Trips 1 Press the LIST key to view the number of overload trips up to 9999 Note The value can be reset to zero with F21 2 The UP DOWN and ENTER keys are disabled for this function 3 Press the F unction key to go to other functions F21 Reset Motor Data 1 To reset to zero the elapsed running time the number of starts and the number of overload trips press the LIST key CLr is displayed 2 Press the ENTER key SUrE is displayed 3 Press the ENTER key again to zero the motor data 4 To return to Step 1 press the LIST key at any time 5 The UP and DOWN keys are disabled for this function 6 Press the F unction key to go to other functions F22 Process Current Warning Level SAMMS LVX Only 1 Press the LIST key to view the active process current level The value represents the percentage of the full load current setting above which a motor current causes the External Trip LED to flash The function is disabled for five times the class time after starting or after a spe
65. otransformer Reduced voltage Y D open transition Reduced voltage Y D closed transition Part winding Wye delta Full voltage part winding FO F21 plus F25 F27 except no F3 F5 or F8 Control circuits Seven preloaded selectable with Any downloadable control circuit HHC May download any custom across the line control circuit e e Table 1 2 SAMMS LV models 2 Installing the SAMMS LV Device 2 Installing the SAMMS LV Device This section provides instructions for installing the SAMMS LV device You should adapt these instructions to suit the needs of your installation and equipment 2 1 Receiving and Storing the SAMMS LV Device Thoroughly inspect the equipment before accepting the ship ment from the transportation company Compare each item received against the packing list and report any shortages or damaged equipment to the carrier If you are not going to install the SAMMS LV device immedi ately store it in a clean dry location at ambient temperatures from 40 C to 85 C The surrounding air should not contain any corrosive fumes or electrically conductive contaminants The storage location should prevent condensation from forming within the equipment enclosure Note Improper storage can cause equipment damage Follow all storage instructions carefully Failure to follow storage in structions will void the warranty 2 2 Where to Locate the Device You can locate the SAMMS LV device and its associated
66. over their values for a service factor of 1 0 This results in more margin before tripping 2 To change the setting you must be in program mode 3 To change the setting press the UP or DOWN key to alternate between the two choices until the selected value is displayed 4 Press the ENTER key to change the active setting to the selected value The display becomes blank while you hold down the ENTER key and the SAMMS LV device stores the new setting If you make an incorrect selection repeat steps 3 and 4 5 To exit the program mode press and hold the F unction key for several seconds The display will show Pro Press the UP or DOWN key to change to the display mode 6 Press the F unction key to step through to another function F7 Overload Trip Class The trip class is the time in seconds that it takes the overload relay to trip for a starting current of 600 of the full load current setting The range of possible values is 2 23 1 Press the LIST key to view the active trip class 2 To change the setting you must be in program mode 3 To change the setting press the UP or DOWN key to scroll through the range of settings until the selected setting appears 4 Press the ENTER key to change the active setting to the selected value The display becomes blank while you hold down the ENTER key and the SAMMS LV device stores the new setting If you make an incorrect selection repeat steps 3 and 4 5 To exit
67. press ENTER to select the setting that is shown If the selected setting is ON skip to Step 5 34 4 If the selected setting is OFF the display blanks while the ENTER key is pressed When the ENTER key is released the setting is changed to OFF Skip to Step 6 5 If the selected setting is ON SUrE is displayed when you release the ENTER key Press ENTER again to make the change to ON Note 7he motor can be damaged if restarted before it is allowed to cool The SUrE display allows you to reconsider your actions before pressing the ENTER key a second time to select the ON setting 6 Repeat Step 3 if you select an incorrect setting 7 If you are in the program mode press and hold the FJunction key for several seconds to exit The display will show Pro9 Press the UP or DOWN key to change to the display mode 8 Press the F unction key to go to other functions F12 Ground Fault Protection or Warning 1 Press the LIST key to view the active ground fault detection setting ON or OFF The factory default setting is warning OFF and the other setting is protection ON a When warning OFF is selected the Ground Fault LED flashes if the ground current increases beyond the pickup level The LED stops flashing as soon as the current drops below the pickup level b When protection ON is selected a ground current above the pickup level will cause a trip The motor stops and the Ground Fault LED is s
68. protection you may adjust the jam trip level from 120 400 of la The jam trip time is 360 msec SAMMS LVX is normally shipped with jam protection enabled with a trip level of 200 lc See Figure 3 11 Jam protection is locked out for 5 times the overload class after a start speed or direction change If the jam limits are exceeded the motor is tripped off line and the External Trip LED on the front panel solidly illuminates You can enable jam protection using HHC function F23 e enabled ON e disabled OFF 3 17 Loss of Load Protection Warning SAMMS LVX Only If the running current of the motor suddenly drops below 20 to 95 adjustable of its previous reading in 360 msec a loss of load has occurred Such a loss of load could be due to a broken belt or loss of back pressure in a pump Loss of load detection is locked out for five times the overload class time after a start direction or speed change See Figure 3 11 You can select loss of load protection or warning using HHC function F24 e protection ON e warning OFF With protection selected detection of a loss of load trips the motor off line and illuminates the External Trip LED With warning selected the motor does not trip off line and the External Trip LED flashes until the current returns to its former steady state level or higher SAMMS LVX is normally shipped with loss of load protection OFF WARNING only and with default setting of 50 I FLC 3 18 Pro
69. r ranges TR1 Programmable on delay or O 200 off delay TR2 Programmable on delay or O 200 off delay Table 3 1 ypes of software timing relays Pilot LEDs The SAMMS LVX device contains three light bars on the front panel while the SAMMS LVE contains two light bars Light bar L1 is reserved and must be used as the STOP or OFF LED You can configure L2 and L3 at your discretion The Hand Off and Auto LEDs correspond to the Hand Off and Auto pushbuttons on the front panel as illustrated in Figure 3 4 You can use the Incomplete Sequence LED in reduced voltage applications or to verify contactor operation Refer to Figure 3 4 for the location of the LEDs and Table 3 2 for a description of the LED states Flashing Pilot LEDs The front panel contains two or three flashing light bars that indicate various conditions such as on delay timing These flashing light bars L1 L2 and L3 as defined above indicate different output devices if they are flashing rather than if they are on constantly Refer to Figure 3 4 for an illustration of pilot LEDs 3 5 Input Devices You can use the following input devices with the SAMMS LV device Remote AC Inputs For SAMMS LVX you can use four 120 VAC or VDC inputs for remote control or you can use two inputs for SAMMS LVE 12 Front Panel Pushbuttons The SAMMS LV device has six front panel pushbuttons for local control of the device You must use pushbutton 1 PB1 for stopping the mo
70. rage current and elapsed running time The SAMMS LV device functions accessible through the HHC are shown in Table 3 7 The number of functions available depends upon the model of the SAMMS LV device you are using The HHC s small size makes it convenient to carry around and use for communication with many SAMMS LV devices To use the HHC connect the HHC s cable which uses a DB 9 connector to the communication port located on the front panel of the SAMMS LV device The HHC receives power and control from the SAMMS LV device When connected to the SAMMS LV device data is displayed on the HHC by a four character seven segment liquid crystal display When discon nected from the SAMMS LV device the HHC does not retain or display data Once connected you can access the functions provided by the SAMMS LV device through the use of the HHC s control keys The HHC has five 5 control keys Function LIST UP DOWN and ENTER The asterisk key serves no function The HHC control keys are described in the following sections 3 Operating the SAMMS LV Device SAMMS LV Function Number SAMMS LVX SAMMS LVE S T S A re O S S ere H EEC S H T S S S S 2 E S eoma H EE A ret a e o A A A H S ANC EE pp A Phasounbance a AA DCI ETT MENTA NENE ar O S a onenn H EEC S G O S S L ANT EEC S AM LT H MENTA a AECI ICI E S Taanon T S G H ECT G H EEC Parowa o H EEC S T S S SST S CO H S S H S S H EE Motor windin
71. rs and compo nents are not included in this manual For this information refer to instructions and drawings furnished with your equipment or contact your Siemens representative You must read these instructions and determine applicability of your equipment Refer to the nameplate data on your controller and to the electrical diagrams supplied with your controller to determine applicability of your equipment 1 2 About the SAMMS LV Device The SAMMS LV device shown in Figure 1 1 is a software configured electronic motor control and overload protection device that incorporates protection tailored to the special characteristics of low voltage motors The SAMMS LV system includes a microprocessor based SAMMS LV device which receives signal inputs from a set of current transformers either 3 10 or 1 30 and power input from a 12 volt tap on the controllers control power transformer To perform certain monitoring and setup activities a Hand Held Communicator HHC shown in Figure 1 2 is required The SAMMS LV device is a multi functional device offering the following e advanced motor protection for low voltage motors e pre programmed control circuits e standardized control panel with input output devices replac ing conventional push buttons pilot lights and selector switches diagnostics statistical motor data real time metering local display of all motor and control circuit data open architecture communications using the ACCESS
72. s Number of motor starts x10 Range 0 0 to 6553 65 536 hours Unit increments 10 operations Number of overload trips Range 0 to 9999 Increments 1 trip Current display Overload Relay Size Current Increments 1A 0 1A 1B 0 1A 1C 0 1A 2A 1A 2B 1A 3 1A 4 1A 5 1A 6 2A Alarm Contact SAMMS LVX Only Configuration N C N O Functions Impending Trip Overload Trip External Trip Ground Fault All of the above Rating 1A 120VAC Software Configured Control Devices Timers 4 Timing range Timers 1 and 2 0 200 seconds selectable Timer 3 1 second fixed value Timer 4 30 seconds fixed value Timer auxiliary contacts Software instantaneous and timed contacts Control relays 8 Auxiliary contacts Software instantaneous contacts 44 Appendix A Technical Specifications Dimensions SAMMS LV Handheld Communicator Environments Operating temperature range Storage temperature Relative humidity Altitude Vibration Electrostatic discharge Electromagnetic interference Radio frequency interference Control Power Specifications Unit powered by Power requirements Control circuit inputs Control circuit outputs Maximum output loading allowed for continuous operation Frequency 6 25 inches W 6 00 inches H 2 125 inches D 3 15 inches W 5 7 inches H 1 37 inches D 252 C to 702C 402 C to 852C 5 to 95 non condensing 6600 ft 5 g s at a frequency range o
73. s greater than or equal to the motor s starting time gives the best protection Overload classes 2 through 23 are available in SAMMS LV The range of protection curves are shown in Figures 3 6 through 3 9 Important n the unlikely event that the motor acceleration time overload class exceeds the motor s stall time use a speed switch as an input source to open the contactor if the switch senses a locked rotor or stall condition Note For clarity the time current characteristic curves in this manual are shown with overload classes 2 5 10 15 and 23 only Use interpolation to derive values of other overload classes not shown 3 13 Ultimate Trip Level and Service Factor The ultimate trip level is the maximum continuous current that does not cause an overload trip Any higher current applied indefinitely to an unprotected motor will ultimately damage it The ultimate trip level for motors with a unity service factor is 110 of the full load current setting For motors with a service factor of 1 15 the ultimate trip level is 120 You can select a service factor of 1 00 or 1 15 with HHC function F6 3 14 Phase Unbalance Unbalanced three phase voltages or loss of one phase can result in unbalanced currents being supplied to the motor Unbalanced currents include negative sequence components that produce heat in the motor winding decreasing the effi ciency of the motor for a given load The SAMMS LV device measures the magnitude o
74. s not carry any current under normal conditions Note Do not ground the SAMMS auxiliary current sensor ACT leads See figure 2 1 A DANGER Hazardous Voltages May be present on external surfaces of un grounded controllers and will cause death serious injury or substantial property damage Follow grounding instructions carefully Connect a ground bus to the chassis of each controller or to the chassis of the mounting equipment containing the earth ground through a grounding conductor Refer to Article 250 of the National Electrical Code for informa tion about the types and sizes of wire conductors and methods for safely grounding electrical equipment and components 2 4 3 Connecting the Device to a Control Power Source The SAMMS LV device requires a 12 VAC control power source in order to operate Connect the control power source to terminals 5 and 6 located on the top of the relay 2 4 4 Connecting Input and Output Devices to the SAMMS LV Device Connect your devices to the input and output connections on the SAMMS LV device as illustrated in Figure 2 2 2 4 5 Communications Connection The SAMMS LV device is equipped with an RS 485 commu nications port on the back of the device The communications port allows connection to a communications module which ALARM RELAY OUTPUT 115VAC eee Cf NENE T VE NOOO NC NC L NN LO N RY RT RI RI NRA IRIS IRIN T
75. t labels a Qualified Person is one who is familiar with the installation construction and operation of this equipment and the hazards involved In addition this person has the following qualifications e Training and authorization to energize de energize clear ground and tag circuits and equipment in accordance with established safety practices e Training in the proper care and use of protective equipment such as rubber gloves hard hat safety glasses face shields flash clothing etc in accordance with established safety procedures e Training in rendering first aid Signal Words The signal words Danger Warning and Caution used in this manual indicate the degree of hazard that may be encountered by the user These words are defined as Danger Indicates an imminently hazardous situation which if not avoided will result in death or serious injury Warning lIndicates an potentially hazardous situation which if not avoided could result in death or serious injury Caution Indicates an potentially hazardous situation which if not avoided may result in minor or moderate injury Dangerous Procedures In addition to other procedures described in this manual as dangerous user personnel must adhere to the following 1 Always work on de energized equipment Always de ener gize a breaker or contactor and remove it from the equip ment before performing any tests maintenance or repair
76. teadily lit You must reset the unit before the motor can be restarted 2 To change the setting you must be in program mode 3 To change the setting press the UP or DOWN key to display the setting options then press ENTER to select the setting that is shown The display blanks while the ENTER key is pressed 4 Repeat Step 3 if you select an incorrect setting 5 To exit the program mode press and hold the Fjunction key for several seconds The display will show ProY Press the UP or DOWN key to change to the display mode 6 Press the Flunction key to go to other functions 3 Operating the SAMMS LV Device F12A Ground Fault Pickup Current 1 Press the LIST key to view the active ground fault pickup current in use The range of values and default values are shown in the table below mas ee Range Current Ca T Oe moe a lao OFF Y FLC for OLR 2 if F3 is not set to OFF If F3 is for OLR 1 is the value Of lao is the value of lao 2 To change the setting you must be in program mode 3 To change the setting press the UP or DOWN key to display the setting options then press ENTER to select the setting that is shown The display blanks while the ENTER key is pressed 4 Repeat Step 3 if you select an incorrect setting 5 To exit the program mode press and hold the FJunction key for several seconds The display will show ProY Press the UP or DOWN key to change to the displ
77. to the full load level start inhibit Resetting after a trip does not interrupt or otherwise affect the ongoing motor thermal computations 3 26 Emergency Restarting In certain critical applications you may want to restart a hot motor even though restarting will damage or destroy the motor An emergency restart is a motor start that occurs after an overload trip on maximum allowable winding or housing tem perature but before they have cooled down to the full load temperature level 100 or below In other words an emer gency restart is a start that occurs before the restart time displayed by HHC function F10 reaches zero With the emergency restart function enabled HHC function F11 the motor can be restarted regardless of the residual heat If the SAMMS LV device performs an emergency restart the winding and housing temperatures in the motor model compu tations reset to zero Any time the motor is started whether an emergency restart or a normal start the emergency restart HHC function F11 is automatically reset to disable e enabled ON e disabled OFF 3 27 Using the Hand Held Communicator HHC The HHC provides you with the capability to monitor and alter various motor control and protection functions provided with the SAMMS LV device For example you can monitor and alter control and protection settings such as on delay time and overload class You can also monitor a variety of motor operating conditions such as ave
78. tor You must use three of the pushbuttons PB4 PB6 for the Hand Off and Auto functions if these functions are used in your configuration If these functions are not used you may use PB4 PB6 for other functions You can configure the other two pushbuttons PB2 and PB3 at your discretion Refer to Figure 3 4 for assignment of pushbuttons Insert labels are used to identify the function associated with each pushbutton or light bar Software Auxiliary Contacts Any number of internal software auxiliary contacts can be configured These contacts show either a normally open NO or normally closed NC status You can set up these auxiliary contacts using the SAMMS LV software Through the SAMMS LV software the pilot LEDs also have auxiliary con tacts ED Flashing urrent Unbalance gt 40 20 40 ing Tri gt 110 gt 100 lt 110 j Trio Startimhibit n j Trip Loss of Load or Load or Process Current Jam Alarm Loss of Trip CPU Failure or Low Voltage mo pam Stop or Off Off Delay Timer Timing Start On Forward On Delay Timer Low Speea Right Timing Reverse High Speed On Delay Timer Left Timing Table 3 2 Description of pilot LEDs round Fault Impending Trip Overload Trip Incomplete Sequence External Trip Alarm CPU Fault Light bar L1 Light bar L2 Light bar L3 b Software Timer Inputs Each timer has an unlimited number of normally open NO and normally closed NC contacts
79. ts vary based on whether the motor is running idle or is stopped The values listed in Table 3 4 are used in the motor model Motor Delta Motor FLC Cond Teme CODEN Stopped 80 C to 1750s 5500s 9100s 29 C Running 80 C to 600s 1800s 2800 s Idle 39 4 C Table 3 4 Motor time constants 3 23 Normalized Temperature Rise for Class B and Class F Insulation Steady state and maximum winding temperature are functions of the motor s insulation class In this motor model normalized temperature rise for both Class B and Class F insulation are used The motor winding temperature is displayed as a per centage of the steady state full load temperature rise as shown in Table 3 5 Class B Insulation Full Load Insulation Temperature Rise Steady State 80 C 105 C 100 Temperature rise at full load current Maximum 140 C 185 C 175 allowed winding temperature Table 3 5 Steady state and maximum winding temperature rise 3 24 Ground Fault Detection In SAMMS LV devices HHC function F12 selects ground fault protection or warning e protection ON e warning OFF The device detects a ground fault if the fault current exceeds the pickup level for 360 msec If you have selected protection ON 23 3 Operating the SAMMS LV Device the motor trios and the Ground Fault LED illuminates until reset If you selected warning OFF the Ground Fault LED flashes as long as the fault current exceeds the pick
80. unications communications system The SAMMS LV device connects to the SEAbus RS 485 via the 5 pin plug on the Communications Module CM 1 The communications connections are illustrated in Figure 2 3 Refer to Installing the ACCESS System manual no SG 6028 for detailed information on connecting the SAMMS LV device to the ACCESS network Proper make up of 5 pin plug Rear View Rear view of the SAMMS LV device 3 Operating the SAMMS LV Device 3 Operating the SAMMS LV Device This section explains how to operate the SAMMS LV device Operation of the device requires that the unit have control power 12VAC applied to terminals 5 6 Most operations also require use of the Hand Held Communicator HHC Use of the HHC is described in detail in section 3 27 3 1 Password Protection Changing the settings of the SAMMS LV device requires the use of the Hand Held Communicator HHC in the program mode To access the program mode the user needs a password The SAMMS LV device is shipped from the factory with the password 0000 This password can be changed by the user as described in section 3 28 1 Display of data using the HHC does not require use of a password 3 2 Using the Reset Test Push Button The Reset Test pushbutton is located at the bottom center of the front panel of the SAMMS LV device as illustrated in Figure 3 1 You press this pushbutton to manually reset the SAMMS LV device after a fault or a trip condit
81. up level Table 3 6 lists the pickup levels for each overload size Ground fault protection is locked out for the overload class time A ae Range Current Ca a a e mor l a s the value of for OLR 2 if F3 is not set to OFF If F3 is FLC FLC OFF 1 is the value of l for OLR 1 4 FLO FLC Table 3 6 Ground fault pickup levels Ground fault detection requires no additional external circuitry or transformers Ground fault detection for the SAMMS LV device is not available for grounded three phase systems or single phase applications Ground fault pickup time is 360 msec A WARNING Automatic Reset Can cause death or serious injury Do not use automatic reset with two wire control or where automatic resetting of the SAMMS LV device restores power to the motor endangering personnel or equipment 3 25 Autoreset After a Trip SAMMS LVX Only To restart the motor after a trip or a fault you must first reset the SAMMS LVX device You can reset the SAMMS LV device in one of two ways First press the Reset Test button on the front panel of the device Second enable the autoreset with HHC function F8 e enable ON e disable OFF 24 With autoreset enabled overload and external trios automati cally reset in 30 seconds after the trip Once the reset occurs the SAMMS LV device can be used to restart the motor unless the motor has reached its maximum temperature and has not cooled down
82. ween the general information contained in this publication and the contents of drawings or supplementary material or both the latter shall take precedence QUALIFIED PERSON For the purpose of this manual a qualified person is one who is familiar with the installation construction or operation of the equipment and the hazards involved In addition he has the following qualifications is trained and authorized to de energize clear ground and tag circuits and equipment in accordance with established safety practices is trained in the proper care and use of protective equipment such as rubber gloves hard hat safety glasses or face shields flash clothing etc in accordance with established safety practices is trained in rendering first aid SUMMARY These instructions do not purportto cover all details or variations in equipment nor to provide for every possible contingency to be met in connection with installation operation or maintenance Should further information be desired or should particular problems arise which are not covered sufficiently for the purchaser s purposes the matter should be referred to the local sales office The contents of this instruction manual shall not become part of or modify any prior or existing agreement commitment or relationship The sales contract contains the entire obligation of Siemens Energy amp Automation Inc The warranty contained in the contract between the parties is the sole warranty

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