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™
SAMMS-LV
Siemens Advanced Motor Master System for
Low Voltage Motors
User's Manual
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Manual No. MCC-3298
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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 not intended 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
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Contents 3.9 Ridethrough Upon Loss of Power 1 Introduction .............................................2 (SAMMS-LVX Only) .........................................17 1.1 About this Manual ............................................ 3 3.10 Overload Protection ........................................ 17 1.2 About the SAMMS-LV Device ...........................3 3.11 Motor Ambient Temperature ........................... 17 1.2.1 The SAMMS-LV Device Models.............. 4 3.12 Protection Curves an
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1 Introduction Signal Words 1 Introduction The signal words Danger, Warning, and Caution used The SAMMS-LV electronic motor control and protection in this manual indicate the degree of hazard that may be device is designed and manufactured in accordance with the encountered by the user. These words are defined as: latest applicable provisions of the National Electric Code, Underwriters Laboratories Standards and Procedures, NEMA DangerIndicates an imminently hazardous situation which, St
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1 Introduction 1.1 About this Manual 1.2 About the SAMMS-LV Device This manual introduces you to the Siemens Advanced Motor The SAMMS-LV device, shown in Figure 1.1, is a software- Master System (SAMMS-LV) motor protection and control relay configured electronic motor control and overload protection which incorporates protection designed for low voltage motors. device that incorporates protection tailored to the special This manual also contains information for installing and operat- characteris
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1 Introduction 16 14 15 11 12 13 9 10 7 8 4 6 5 1 2 3 Figure 1.1 SAMMS-LV, front view protection (F23), loss of load protection/alarm (F24), or process 1.2.1 The SAMMS-LV Device Models current warning (F22) functions. Functions F3 and F5 associ- ated with two-speed applications are not available. No provi- The SAMMS-LV device is available in two models: SAMMS-LVE sion for automatic reset (F8) is provided. SAMMS-LVE accepts and SAMMS-LVX. Each model meets the various demands of two remote inputs,
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1 Introduction 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 microprocessors memory, in the factory or on site, using an ® IBM -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
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1 Introduction SAMMS-LV Model SAMMS-LVE SAMMS-LVX Application Across-the-line, non reversing X X Across-the-line, reversing X Two-speed, one winding, constant or X variable torque X Two-speed, one winding, constant horsepower Two-speed, two winding X Reduced voltage, autotransformer X Reduced voltage, Y-D, open transition X Reduced voltage, Y-D, closed transition X Part winding X Wye-delta X Full voltage, part winding X Functions available (see table 3.7) F0-F21 plus F25-F27 (except no F0-F27 F3
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2 Installing the SAMMS-LV Device and a wiring diagram. The connection diagram illustrates the 2 Installing the SAMMS-LV Device connections between the SAMMS-LV device and its peripheral This section provides instructions for installing the SAMMS-LV devices. The ladder diagram illustrates the control circuit device. You should adapt these instructions to suit the needs of loaded into the SAMMS-LV device. Figure 2-1 shows a typical your installation and equipment. connection diagram for the SAMMS-
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2 Installing the SAMMS-LV Device Figure 2.1 Full voltage non-reversing connection diagram 8
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2 Installing the SAMMS-LV Device Connect a ground bus to the chassis of each controller or to the 2.4.2 Grounding the Device chassis of the mounting equipment containing the earth ground As stated in Guideline 5, ground each motor controller at a through a grounding conductor. single ground point. The grounding path to earth must be permanent and continuous. It must also be able to safely Refer to Article 250 of the National Electrical Code for informa- conduct ground fault currents that may occ
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2 Installing the SAMMS-LV Device enables the SAMMS-LV to communicate with a remote super- communications system. visory device. Examples of the remote supervisory device include the Power Monitor display unit, a standard personal The SAMMS-LV device connects to the SEAbus™ RS-485 via computer running the Power Monitor PC communications and the 5 pin plug on the Communications Module CM-1. The ® supervisory software, or Siemens Microsoft Windows™ based communications connections are illustrated i
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3 Operating the SAMMS-LV Device 3.2.2 Performing an Overload Relay Test 3 Operating the SAMMS-LV Device You may perform an overload relay test whenever the motor is This section explains how to operate the SAMMS-LV device. stopped. Use the following procedure to perform an overload Operation of the device requires that the unit have control power relay test. (12VAC) applied to terminals 5-6. Most operations also require use of the Hand-Held Communicator (HHC). Use of the HHC is 1.Press and hold
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3 Operating the SAMMS-LV Device Front Panel Pushbuttons 3.4 Output Devices The SAMMS-LV device has six front-panel pushbuttons for You can use the following SAMMS-LV output devices: local control of the device. You must use pushbutton 1 (PB1) for stopping the motor. You must use three of the pushbuttons AC Outputs (PB4-PB6) for the Hand, Off and Auto functions if these The SAMMS-LVX device provides up to three AC coil drivers functions are used in your configuration. If these functions are capab
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3 Operating the SAMMS-LV Device local two-wire, remote two-wire 3.6 Ladder Diagrams local three-wire, remote three-wire remote two-wire 3.6.1 Library of Standard Ladder Diagrams remote three-wire The SAMMS-LV library of more than 70 ladder diagrams covers SAMMS-LVE has seven preloaded circuits (ladder diagrams) most standard motor control applications. Table 3.3 lists the for use with across-the-line (FVNR) applications. SAMMS-LVX standard control circuits and the input and output assign
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3 Operating the SAMMS-LV Device Figure 3.3 Ladder symbols used with the SAMMS-LV device (sheet 2) 3 5 13 15 16 12 4 6 7 8 9 10 11 12 14 STOP or OFF PB6 AUTO or SAMMS-LVX Current L1 VARIABLE Unbalance LED LED on LED Flashing VARIABLE Current PB5 > 40% 20 - 40% Unbalance OFF or Impending Impending > 100% L2 > 110% Trip Trip VARIABLE < 110% Overload Start Overload VARIABLE Trip Inhibit PB4 HAND or Incomplete Trip Overload Sequence L3 VARIABLE Trip Trip: Loss Alarm: Loss External of Load,or Trip Ala
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3 Operating the SAMMS-LV Device Input Assignments Starter Program Control Type PB1 PB2 PB3 PB4 PB5 PB6 Type Block Preloaded in FVNR PB10 LOCAL, 2-WIRE OFF ON SAMMS-LVE, PB11 LOCAL, 3-WIRE STOP START can be PB12 LOCAL, 3-WIRE, REMOTE 2-WIRE STOP START HAND OFF AUTO downloaded in SAMMS-LVX PB13 LOCAL/REMOTE 2-WIRE STOP HAND OFF AUTO PB14 LOCAL/REMOTE 3-WIRE STOP START PB15 REMOTE, 2-WIRE PB16 REMOTE, 3-WIRE Available with FVR PB17 LOCAL, 2-WIRE OFF FWD REV SAMMS-LVX PB18 LOCAL, 3-WIRE STOP FWD REV
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3 Operating the SAMMS-LV Device Input Assignments Starter Program Control Type PB1 PB2 PB3 PB4 PB5 PB6 Type Block Available with RVA PB46 LOCAL, 2-WIRE OFF ON SAMMS-LVX (Auto TX) PB47 LOCAL, 3-WIRE STOP START only Sizes 2-4 PB48 LOCAL, 3-WIRE, REMOTE 2-WIRE STOP START HAND OFF AUTO PB49 LOCAL/REMOTE 2-WIRE STOP HAND OFF AUTO PB50 LOCAL/REMOTE 3-WIRE STOP START PB51 REMOTE, 2-WIRE PB52 REMOTE, 3-WIRE RVA PB53 LOCAL, 2-WIRE OFF ON (Auto TX) PB54 LOCAL, 3-WIRE STOP START Sizes 5-6 PB55 LOCAL, 3-WIR
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3 Operating the SAMMS-LV Device 3.7 Incomplete Sequence 3.10 Overload Protection Sometimes the motor contactors do not respond in a timely The motor overload protection function is based on calculating manner to start, stop, transition, speed or direction change the motors winding and housing temperatures. These tem- commands from the controller. If the SAMMS-LV device does peratures are compared to the allowable temperature limits for not detect motor current one second after issuing a start t
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3 Operating the SAMMS-LV Device Figure 3.5 ODP motor thermal signature 18
