® celduc r e l a i S/MOT/SMCV6150/A/30/08/13 Solid State Relays For Motor Control s Page 1/16 SMCV6150 INDUCTION MOTOR SOLID-STATE REDUCED VOLTAGE STARTER (SOFTSTARTER) WITH SOFTSTOP FEATURE celduc relais SMCV can be employed everywhere using a costly and relatively big variable speed controller is not required (pumps, fans, compressors, conveyors, …). Its six thyristor structure working like a full wave phase angle controller (both positive and negative cycles are controlled), allows to reduce efficiently the induction motor starting current as well as the motor starting torque. This motor starting current reduction allows to optimize the mains grid as well as its protections and avoid having voltage fluctuations leading to ambient light variations also called "flicker". Built to help the user to get his assembly in compliance with the European directives and standards, this product easy fits in the existing application without any modification of the wiring field configuration. Thus, the SMCV can easily replace an electromechanical star-delta starter without changing the motor coupling! In a project including a three phase induction motor it can be implemented like a usual three phase electromechanical contactor. Furthermore, its ability to be installed inside the delta wiring allows this device to drive 1.73 times more current than a standard on line softstarter, The SMCV also have diagnostic and self-test functions to inform people involved in the machine maintenance and to reduce the cost and the delay to restart the production. Induction Motor Softstarter 200 - 480VAC ->15kW (Y) ->26kW (D) MAIN CHARACTERISTICS Max. Motor Power @40°C Star (Y) Delta (D) 400VAC 230VAC 400VAC 230VAC 15kW 8.6kW 26kW 15kW Phase to With heatsink Phase Max. EN60947-4-2 Voltage 200 to 30A 22.5A 480VAC IAC53a @40°C Mains Frequency Input Status Outputs In/Out/Case Isolation Operating Temperature 40 to 65Hz 10 to 24VDC 24V / 1A AC/DC 4kV -40 to +100°C BENEFIT FOR MOTOR STARTING DIRECT ON LINE (DOL) STARTING STAR (Y) TYPICAL WIRINGS DELTA (D) Mechanical part stress: - noise - Maintenance costs High inrush current: - Motor and mains protections oversized - Risk of flicker SOFTSTARTING WITH SMCV Softstarting: - Noise reduction - Maintenance cost reduction No more high inrush current: - Motor and mains protections optimization - No more harmonic or flicker problems Proud to serve you Characteristics may change without notice ® celduc r e l a i s S/MOT/SMCV6150/A/30/08/13 celduc® Solid State Relays For Motor Control Page 2/16 r e l a i s SETTINGS AND DIAGNOSTIC Fig. 1 INTERNAL DIAGRAM Fig. 2 DESCRIPTION Thre e phase mains connections Option switches Supply (Be hind the labe l) Start / Line 0V 4 Status outputs celduc Ctrl 3 Byp. 2 Diag. NP N Sta rt Ki ck + Urg. Stop 5 So ftSto p Byp . 6 Controls 3 L2 5L 3 ® Motor So ftstarter So ftSto p Byp . 1L 1 Stop / Load 1L 1 3 L2 2 T1 4 T2 6 T3 Ma d e i n Fra nc e NP N Sta rt Ki ck LEDs 5 L3 1 Ti m e(s) 0,5 0.25 0 64 32 Ini ti al To rqu e 1 0.3 0.4 2 0.2 0.5 40 0.6 0.7 8 1 16 0.9 0.8 Settings DESCRIPTION OF THE CONNECTIONS 2,3 4,6 5,6 Terminals 1,2 Function Diagnostic Bypass Control Urgent stop Input/Output Activated when … Polarization Output Output Closed NO (AC or DC) NO (AC or DC) Input High (PNP) or Low (NPN) Yes (4+ / 6-) Input Closed Setting / Option Time Function Increasing voltage ramp duration Possibilities Ts= 0 up to 64s Proceeding White squares = sliders Example : Open Yes (5+ / 6-) DESCRIPTION OF THE SETTINGS AND OPTIONS Initial Torque Soft-stop Byp. Min. voltage Decreasing Bypass presence applied to the voltage ramp diagnostic option motor at start duration (if bypass used) 0 up to 100 % 0, 1/2, 1 or 2 x ts up to 64s max. - 2T 1 4T2 Motor connections 1L1, 3L2, 5L3 Three phase mains (Obligatory) Input Since 3x200VAC NO (AC) 2T1, 4T2, 6T3 NPN / START Kick Softstarter type of control option Motor shaft breakaway PNP, NPN or since the mains presence 0 up to 100ms depending on ts : 0xts : PNP : 0.5xts : NPN = All the switches down (OFF) (Factory setting) : ts : Mains : 2xts Fig. 3 6T3 DESCRIPTION OF THE DIFFERENT SETTING PARAMETERS Motor supply (Obligatory) Output 100ms after control NO (AC) ® celduc r e l a i S/MOT/SMCV6150/A/30/08/13 Solid State Relays For Motor Control s Page 3/16 SETTINGS AND DIAGNOSTIC Visualization Supply Line DESCRIPTION OF THE DIAGNOSTIC INFORMATION IN NORMAL OPERATION Status Outputs Motor Cause probable Load Byp. Diag. Stopped Stopped Starting No mains or device not correctly wired Mains voltage and phases OK, Motor detected, No control Mains voltage and phases OK, Motor detected, Control detected and beginning of the softstarting ramp Running to nominal speed Mains voltage and phases OK, Motor detected, Control detected and end of the softstarting ramp Decelerating Mains voltage and phases OK, Motor detected, No control and beginning of the softstopping ramp DIAGNOSTICS IN CASE OF FAILURE Visualization Supply Line Load Status Outputs Byp. Motor Possible Cause Solution Stopped Mains voltage too low Check the phases 3L2 and 5L3 Stopped Phase(s) missing, Mains frequency out of range, Too much interference Check the phases Running Phase(s) missing Check the phases Load missing, Short-circuited thyristor Bypass missing (its checking is required by the corresponding option) Check the motor connections and the solid state switches Diag. Stopped Stopped Stopped The solid state switches can not close Stopped Microcontroller malfunction Stopped Stopped Check the bypass connections or if not used, cancel the checking option Check if the connection between 5 and 6 of the control terminal block is correctly done. Check as well if the load current is sufficient. Disconnect the softstarter from the mains for a while A problem occurred on the mains (no voltage or a phase missing, …) then disappeared but the control voltage was applied A problem occurred on the load (temporary disconnection,…) then disappeared but the control voltage was applied Remove the control for a while Remove the control for a while LEGEND Off Green Red Flashing off/green Flashing Off/red IMPORTANT INFORMATION ABOUT THE DIAGNOSTIC 123- 4- The device makes a complete diagnostic (mains, load and itself) since it has enough supply voltage (On the mains or on the control side). The device only checks the presence of the phases and the closing of the solid state switches during the voltage ramps (Softstart and softstop) and during the full on state period. The control overrides the diagnostic. If a problem occurs during the control period, the device will close all the solid state switches. If the problem goes on during the full on state period, the corresponding information will be given to the user according to the table above. Likewise, if a problem occurs during the softstopping period, the device will stop immediately in order to reach the off state diagnostic period. On a hard stop (no softstop) and case of driving a large motor, the device may temporary display a problem concerning the mains. This is due to an important residual voltage across the motor windings (Back EMF generated by the motor rotation and the remaining magnetic field). This security allows the user to avoid connecting the motor to the mains in bad conditions. This phenomenon can be cancelled by using the softstop feature that slowly reduces the remanent magnetic field inside the motor. This allows as well to avoid ove rvoltage across the solid state switches (increasing the lifetime expectancy of the integrated varistors). Therefore, softstop is recommended even with high inertia motor loads. S/MOT/SMCV6150/A/30/08/13 celduc® Solid State Relays For Motor Control Page 4/16 r e l a i s CONTROL CONTROL INPUTS AND STATUS OUTPUTS Fig. 4 HIGH SIDE CONTROL (PNP) Fig. 5 LOW SIDE CONTROL (NPN) STATUS OUTPUT UTILIZATION Fig. 6 ELECTRICAL CHARACTERISTICS OF THE STARTING AND STOPPING INPUTS VALUES CHARACTERISTICS LABELS (Given at 20°C ambient unless otherwise specified) Input Ctrl Urg. Stop Immediately stop the Function Controlling the device device Control Type High side control Low side control Opening the (Depending on the option switches) (PNP) (NPN) connection to zero volt Concerned Terminals 4&6 4&6 5&6 Control Voltage Range Uc 10->24VDC (according to EN60947-4-2) Min. Control Voltage Ucmin. 8.5V Max. Voltage Drop Ut 2.5VDC 1.5VDC Max. Input Voltage Ucmax=28VDC Utmax=28VDC Utmax=6VDC Max. Reverse Voltage -Ucmax=28VDC -Utmax=28VDC -Utmax=6VDC Release Voltage Uc<1VDC Ut>2.5VDC Ut>1.5VDC Control Current Ic 5->19mADC - - Current To Switch Ict - 50->100µADC 20mADC CHARACTERISTICS Output Concerned Terminals Function Nom. Operating Voltage Operating Voltage Range Non-repetitive Max. Peak Voltage STATUS OUTPUT CHARACTERISTICS VALUES LABELS (Given at 20°C ambient unless otherwise specified) Diag. Byp. 1&2 2&3 Indicates the end of the Environment problem starting period and can be detection or faulty device used to control a bypass indication electromechanical contactor Usan 24VAC/DC Usa 0->28VAC/DC Usapmax 60V Yes 25V size 7 varistors integrated Protection Against Overvoltage Min. Load Current Ibymin Ipbmin 0 Max. Permanent Current Iby/Ipb 1A AC/DC Overload Current Ibyp/Ipbp 2.4A AC/DC Protection Against Short-Circuits REMARKS See curve fig. 7 page 5 Depends on Ut REMARKS See curves fig. 11 & 12 page 5 See curve fig. 8 page 5 @100ms 10% of the cycle No On-state Resistance Ron 500m Off-state Resistance Roff 100M Off-state Capacitance Coff 130pF Turn-on Time Turn-off Time Toff Ton 0.5ms 2ms See curve fig. 9 page 5 See curve fig. 10 page 5 ® celduc r e l a i s Solid State Relays For Motor Control S/MOT/SMCV6150/A/30/08/13 Page 5/16 CONTROL Fig. 7 Fig. 9 CHARACTERISTIC CURVES OF THE CONTROLLING INPUTS AND STATUS OUTPUTS Control Input Current/Voltage Characteristic Curve Giving Max. Output Status Current Fig. 8 In PNP Mode (High Side Control) Versus Ambient Temperature Off-state Status Output Parasitic Capacitance Versus Output Voltage Fig. 10 Fig. 11 Status Output Overvoltage Protection Characteristic Fig. 12 On-state Status Output Resistance Versus Ambient Temperature Curve Giving The Max. Number Of Overload Pulses Regarding Their Duration For The Overvoltage Protection Of The Status Outputs S/MOT/SMCV6150/A/30/08/13 Solid State Relays For Motor Control Page 6/16 celduc® r e l a i s POWER CHARACTERISTICS Concerned Terminals Voltage Range Consumption Frequency Range Turn-on Time INTERNAL SUPPLY ELECTRICAL CHARACTERISTICS VALUES LABELS (Given at 20°C ambient unless otherwise specified) 3L2 & 5L3 Ue 200->480VAC Is 1mA typical f 40-65Hz tm 100ms CHARACTERISTICS Concerned Terminals Max Power Of The Motor @400VAC Star Wiring (Y) Max Power Of The Motor @230VAC Star Wiring (Y) Max Power Of The Motor @400VAC Delta Wiring (D) Max Power Of The Motor @230VAC Delta Wiring (D) Nom. Operating Voltage Operating Voltage Range Max. Non-repetitive Peak Voltage POWER SIDE CHARACTERISTICS VALUES LABELS (Given at 40°C ambient unless otherwise specified) 1L1, 2T1, 3L2, 4T2, 5L3, 6T3 Pn 15kW Pn 8.6kW Pn 26kW Pn Uen Ue Uep 15kW See internal diagram fig. 1 page 2 REMARKS Device wired inside the delta Device wired inside the delta 230VAC & 400VAC 200->480VAC 1200V Yes 510V size 14 varistors Integrated Overvoltage Protection REMARKS See curves fig. 16 & 17 page 7 Hard conditions See curve fig. 15 page 7 Normal conditions See curve fig. 15 page 7 E.g. softstarting lamps See Curve fig. 14 page 7 AC53a Nom. Current according to EN60947-4-2 (Induction Motor) Ie (AC53a) 22.5A (With heatsink) AC53a Max. Permanent Current (Induction Motor) Ie (AC53a) 30A (With heatsink) Max. AC51 Permanent Current (Resistive Loads) Non-repetitive Peak Overload Current (1 cycle of 10ms) Fusing Limit Current For Choosing The Protecting Fuses Min. Load Current Max. Leakage Current Power Factor Operating Mains Frequency Range Off-state Dv/Dt Integrated Transient Voltage Protection Max. Current Rising Time Direct Voltage Drop Resistive Part Of The Direct Voltage Drop Threshold Part Of The Direct Voltage Drop Max. Junction Temperature Junction/Plate Thermal Resistance Per Power Element Thermal Resistance without Heatsink Vertically Mounted Ith (AC51) 125A (Limited at 50A by connections, with heatsink) ITSM 2000A I2t 20000A2s Iemin Ilk Pf F dv/dt di/dt Ud 100mA 7mA 0->1 40->65Hz 500V/µs YES RC network 50A/µs 1.4V rt 2m @125°C Vto 0.9V @125°C Tjmax 125°C Rthjc 0.25K/W Total = 3 power elements Rthca 4K/W @Tca=60°C Heatsink Thermal Time Constant Tthca 15min @Tca=60°C @10ms @400VAC50Hz @Ith ® celduc r e l a i S/MOT/SMCV6150/A/30/08/13 Solid State Relays For Motor Control s Page 7/16 POWER CHARACTERISTIC CURVES OF THE POWER ELEMENTS Overload Current Characteristic Electrical Label Description Fig. 14 Regarding Overload Duration Fig. 13 ITSM 2000 (A) 1800 (Peak Values) 1600 1400 Repetitive Values Non-Repetitive Values 1200 1000 800 600 400 200 0 0.01 0.10 1.00 10.00 Time (s) Nominal Currents Versus Ambient Temperature Fig. 15 Permanent current Ie AC51 (ARMS) 140 Wire cross section >10mm² : Use 2 wires with lower size or use a special adaptors 130 120 110 100 Power dissipated (W) 458 Please refer to the installation notice for precautions about mounting the device on a heatsink. 0.2K/W 0.3K/W 0.1K/W 90 80 4K/W = No Heatsink 1.2K/W = WF121000 0.9K/W = WF115100 0.7K/W = WF070000 0.55K/W = WF050000 0.3K/W = WF031100 0.2K/W = WF020000 0.1K/W = No reference 0.55K/W 50 40 233 51 20 25 4K/W 0 0 Fig. 16 267 78 1.2K/W 0 303 107 0.9K/W 10 340 137 0.7K/W Max AC53a current 30 378 200 167 70 60 417 10 20 30 40 50 60 70 Ambient temperature (°C) Overvoltage Protection Characteristic (Varistors) Fig. 17 80 90 100 110 Curve Giving The Max. Number Of Overload Pulses Regarding Their Duration For The Overvoltage Protection Of The Power Elements S/MOT/SMCV6150/A/30/08/13 celduc® Solid State Relays For Motor Control Page 8/16 r e l a i s GENERAL CHARACTERISTICS Power Output/Input Isolation Status Outputs / Input Isolation Plate/Input Isolation Status Output/Plate Isolation Isolation Resistance Isolation Capacitance CHARACTERISTICS Storage Ambient Temperature Ambient Operating Temperature Max. Heatsink Temperature Wet Heat Resistance (continuous) Wet Heat Resistance (cyclical) INPUT/OUTPUT ISOLATION CHARACTERISTIC VALUES LABELS (Given at 20°C ambient unless otherwise specified) Uimp 4kV Uied 2.5kV Uimp 4kV Uimp 4kV Rio 1G Cio <8pF CLIMATIC OPERATING ENVIRONMENT VALUES LABELS (Given at 20°C ambient unless otherwise specified) Tstg -40->+100°C Tamb -40->+90°C Tc 100°C REMARKS According to I.E.C. 68 parts 2 & 3 According to I.E.C. 68 parts 2 & 30 CONNEXIONS AND REQUIRED TOOLS ON THE CONTROLSIDE VALUES CHARACTERISTICS LABELS (Given at 20°C ambient unless otherwise specified) Connections Screwed Screwdriver 0.8 x 2mm Wire Cross Section REMARKS REMARKS 2.5mm2 Min. And Max. Tightening Torque CHARACTERISTICS Connections Screwdriver CONNEXIONS AND REQUIRED TOOLS ON THE POWER SIDE VALUES LABELS (Given at 20°C ambient unless otherwise specified) Screwed Posidriv 2 or 0.8 x 5.5mm Wire Cross Section Min. And Max. Tightening Torque Possible Number Of Connected Wires For The Max. Cross Section 1,5->6mm2 (10mm2 without ferrule) 1.8->3N.m 2 CHARACTERISTICS AND REQUIRED TOOLS FOR THE SETTINGS VALUES CHARACTERISTICS LABELS (Given at 20°C ambient unless otherwise specified) Setting "Time" and "Initial Torque" Option Switches Screwdriver Number Of Positions 10 2 for each switch Changing Position >1.5N.cm +/- 50% >3N.cm +/- 50% Required Torque Angle Between Each Position 36° 0° CHARACTERISTICS Housing Mounting Noise Level Weight REMARKS MISCELLANEOUS CHARACTERISTICS VALUES LABELS (Given at 20°C ambient unless otherwise specified) UL94V0 Screwed Low audible vibration during the softstarting and softstopping periods 2600g REMARKS Rotary switches : No rotation stop REMARKS ® celduc r e l a i s Solid State Relays S/MOT/SMCV6150/A/30/08/13 For Motor Control Page 9/16 GENERAL Fig. 18 DIMENSIONS CHARACTERISTICS CHARACTERISTICS OF THE THERMAL PROTECTION VALUES LABELS (Given at 20°C ambient unless otherwise specified) REMARKS Not Available With This Reference CHARACTERISTICS CHARACTERISTICS OF THE FAN VALUES LABELS (Given at 20°C ambient unless otherwise specified) Not Available With This Reference REMARKS S/MOT/SMCV6150/A/30/08/13 Solid State Relays For Motor Control Page 10/16 celduc® r e l a i s STANDARDS IMMUNITY LEVEL WITHIN ELECTROMAGNETIC COMPATIBILITY (E.M.C.) VALUES CHARACTERISTICS LABELS (Given at 20°C ambient unless otherwise specified) Electrostatic discharges EN 61000-4-2 8kV in the air 4kV contact Radiated Electromagnetic Fields EN 61000-4-3 10V/m Fast Transient Bursts EN 61000-4-4 2kV direct coupling on the power side 2kV clamped coupling on the input side Electric chocks EN 61000-4-5 1kV direct coupling differential mode (Input and output sides) 2kV direct coupling common mode (Input and output sides) Voltage Drop EN 61000-4-11 EMISSION LEVEL WITHIN ELECTROMAGNETIC COMPATIBILITY (E.M.C.) VALUES CHARACTERISTICS LABELS (Given at 20°C ambient unless otherwise specified) In compliance with the standards for industrial field Conducted Disturbances EN55011 In compliance with the standards for domestic field with an external bypass contactor <30dbµV for the frequency range 30->230MHz Radiated Disturbances EN55011 <37dbµV for the frequency range 230->1000MHz The conducted or radiated disturbances generated by solid state relays depend on the wiring and load configuration. The test method recommended by the European standards and concerning electromagnetic compatibility leading to results far from reality, we decided to advise our customer in order to adapt their filtering scheme to their application. The European standard EN60947-4-2 requires the Remarks Concerning Filtering measurement to be done at full on state (end of the softstarting period). Therefore, our products are below the industrial field required levels on inductive load like the induction motor and no additional filter is needed. The starting period that may last several minutes generates enough interference to disturb sensitive devices located near the softstarter. If any, please contact us so that we can help you to choose the right filter. REMARKS No state changing or destruction No state changing or destruction No state changing or destruction No state changing or destruction REMARKS LOW VOLTAGE DIRECTIVE CHARACTERISTICS LABELS Standard Protection Level IP Protection For Direct Touch VALUES (Given at 20°C ambient unless otherwise specified) REMARKS EN60947-4-2 2L0 According to V.D.E. 160 part 100 : Back hand and finger safety APPROVALS CHARACTERISTICS LABELS VALUES (Given at 20°C ambient unless otherwise specified) c UL US EN 60947-4-2 UL508 Product built in compliance but not approved VDE 0805 EN60950 Product built in compliance but not approved CE Marking REMARKS Yes Office environment ® celduc r e l a i Solid State Relays S/MOT/SMCV6150/A/30/08/13 For Motor Control s Page 11/16 INSTALLATION IMPORTANT DANGER! The installation of this product must be done by qualified people, informed about electric hazards (electrocution risks linked to the voltage levels in the circuit). Any intervention on the installation must be operated the circuit disconnected from the electric grid by an electromechanical mean insuring a sufficient galvanic isolation. The device concerned by this document is composed of silicon based solid state switches. They never ensure a safe function when they are not controlled (Important leakage current and untimely closing). Therefore, we advise you to use an electromechanical device in series with the softstarter, which can ensure a safe operation in the disconnected circuit. The emergency stop must not be done by the softstarter. It must be done by an electromechanical with sufficient current breaking possibility. In order to operate in the circuit in safe condition, the control part of the softstarter will have to be disconnected from the control or auxiliary supplies as well. ATTENTION 1- The SMCV does not correctly operate on three phase mains with the motor neutral connected to the neutral of the mains. If any, please contact us. 23- The overload relay must be adapted to the motor. Please take care not to make short-circuits while installing the by-pass contactor or the backward wires for delta wiring. In case of devices planned to be used connected to a by-pass contactor (SMCW…1 reference), the control voltage will have to be held sufficiently to allow the by-pass to close. Take care not to remove the by-pass checking option "byp.". In case of fast softstarting and softstopping controls without waiting for the end of the ramps, the motor may heat up. Please contact your motor supplier to choose an adapted model. 45- DEVICES On Line Fuses (Hard conditions according to EN60947-4-2) On Line Fuses (Normal conditions) Overload Relay (Hard conditions according to EN60947-4-2) Overload Relay (Normal conditions) Breaking Capability Of The By-pass Contactor By-pass Contactor Coil Thermal Protection Wiring / Settings ENVIRONMENT OF THE SOFTSTARTER LABELS DESCRIPTION FERRAZ 14 x 51 am 50/500V To be determine by the user Moeller Z00-24 class 10A To be determine by the user KM1 30A AC1 A1/A2 T°C 15VAmax. / 15W max. Not available Comply with the characteristics given in general information REMARKS S/MOT/SMCV6150/A/30/08/13 Page 12/16 Solid State Relays For Motor Control INSTALLATION Fig. 19 WIRING POSSIBILITIES High Side Control (PNP) Fig. 20 Low Side Control (NPN) celduc® r e l a i s ® celduc r e l a i s Solid State Relays For Motor Control S/MOT/SMCV6150/A/30/08/13 Page 13/16 INSTALLATION Fig. 21 WIRING POSSIBILITIES Upon The Mains Control OTHER LOAD POSSIBILITIES Softstarting Incandescent Or Infrared Lamps Softstarting Three Phase Loaded Transformers (AC1 Current) (Please consult us) S/MOT/SMCV6150/A/30/08/13 Solid State Relays For Motor Control Page 14/16 celduc® r e l INSTALLATION Fig. 22 MOUNTING Mounting Precautions : The heatsink fins must be mounted vertically to ensure a good thermal convection. A minimum space must be left free around the assembly. 20mm mini. Thermal grease 20mm mini. Fig. 24 Mounting With Screws Omega DIN Rail Mounting (EN50022) Mounting Fixing Removing CAUTION ! High temperature a i s ® celduc r e l a i s S/MOT/SMCV6150/A/30/08/13 Solid State Relays For Motor Control Page 15/16 INSTALLATION ADVISES FOR THE SETTINGS ATTENTION Obtaining a particular starting time value is only a consequence of the motor torque reduction and can not be guaranteed or easily repeatable. The rotary switch « Time (s) » setting values only give the duration of the voltage ramp applied to the motor but not necessarily its starting time. The main SMCV function is to obtain a motor torque reduction to take care of the motor load and the electric grid. The motor starting time is only a consequence and completely depends on the motor itself, its load and the settings done by the user. The SMCV can not break a motor driving a load that has much inertia. The user can only obtain a stop time equal or longer than a simple disconnection from the electric grid. Using the softstop feature can only be justified when the motor load tends to break the motor (pumps, …) or when the products treated by the machine need to be stop slowly (conveyors,…). In the case of load with high inertia, the softstop feature can help to reduce slowly the magnetic field inside the motor to avoid long time overvoltage in the circuit. Setting Examples Long Starting Time For lamps, Advise Settings Direct On Line Starting (DOL) Transformers, … For Testing The Motor Starting (On a motor, it may hum) or et et Loads With Decreasing Torque Like 1/N And Constant Power Loads With Increasing Torque Like N2 And Increasing Power Like N Load Examples Advised Time Setting Depending on the user starting time requirement Fans Centrifugal Pumps … Advised Torque Setting Load Examples Advised Time Setting Winding material around a shaft (cable, paper, metal, textile, plastic, …) Chip disposal … Torque Curve Maximum (64s) Advised Torque Setting Torque Curve Adjusted to avoid the motor to hum C Depending on the user starting current requirement C Softstop Softstop ½ of the starting time (Magnetic field reduction) ½ of the starting time (Magnetic field reduction) N N Loads with Constant Torque And Power Increasing Like N Load Examples Advised Time Setting Conveyors, cranes, constant volume pumps, … Loads Increasing Like N And Constant Power Load Examples Advised Time Setting Depending on the user starting time requirement Machine tools, Rolling mills, … Maximum (64s) Advised Torque Setting Advised Torque Setting Torque Curve Torque Curve Depending on the user starting current requirement C N Adjusted to avoid the motor to hum C Softstop Softstop Depending on the user stopping smoothness requirement Depending on the user stopping smoothness requirement N S/MOT/SMCV6150/A/30/08/13 Page 16/16 Solid State Relays For Motor Control celduc® r e l a i s celduc® r e l a i s www.celduc.com 5, rue Ampère B.P. 30004 42290 SORBIERS - FRANCE Phone : +33 (0) 4 77 53 90 21 Fax : +33 (0) 4 77 53 85 51 Email : [email protected]