Siemens SED2 VFD Operating Instructions Manual Download

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Item Number 125-3377, Rev. FA

SED2 VFD NEMA Type 3R and 3R
Harsh Environment (3RHE) Bypass

Operating Instructions

Summary of Contents for SED2 VFD

Page 1: ...Item Number 125 3377 Rev FA SED2 VFD NEMA Type 3R and 3R Harsh Environment 3RHE Bypass Operating Instructions ...

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Page 3: ...SED2 VFD NEMA Type 3R and Type 3R Harsh Environment 3RHE Bypass Operating Instructions ...

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Page 5: ...s B line filters are also available for most models Installation of these filters satisfies the requirements for the EU s EMC directive SERVICE STATEMENT Control devices are combined to make a system Each control device is mechanical in nature and all mechanical components must be regularly serviced to optimize their operation All Siemens Building Technologies Inc branch offices and authorized dis...

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Page 7: ...stallation 8 Environmental Conditions 8 Inspection 8 Dimensions and Weights 9 Mounting 10 Wiring Connections 12 Motor Cable Length 18 Access to SED2 Connection Terminals 19 Startup Procedures 26 Preparation 26 Start up 27 Quick Commissioning Procedure 31 Additional Parameter Settings 41 Flying Start 41 Automatic Restart 43 Vdc Controller 46 Pulse Frequency 47 Motor Data Identification 48 Reset to ...

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Page 9: ...nd details on electrical connections Startup Procedures provides step by step procedures to start up the NEMA Type 3R and Type 3RHE Bypass Technical Specifications lists NEMA Type 3R 3RHE Bypass specification data Troubleshooting provides guidelines for troubleshooting the NEMA Type 3R 3RHE Bypass Manual Notations Notation Symbol Meaning WARNING Indicates that personal injury loss or life may occu...

Page 10: ... from your local Siemens Building Technologies representative SED2 VFD Startup Operation Maintenance Manual 125 3201 SED2 VFD Parameter Reference Guide 125 3214 SED2 Variable Frequency Drives Submittal Sheet 154 042 SED2 VFD NEMA Type 3R and Type 3R Harsh Environment 3RHE Bypass Submittal Sheet 154 062 SED2 VFD Conventional Bypass Option Submittal Sheet 154 044 ...

Page 11: ...ual Successful and safe operation of this equipment depends upon its proper handling installation operation and maintenance Before carrying out any installation and commissioning procedures you must read all safety instructions and warnings including all warning labels attached to the equipment Make sure that the warning labels are kept in a legible condition and ensure missing or damaged labels a...

Page 12: ...rcuit Drive Motor 2 Contactor Bypass Input Device Drive Motor 3 Contactor Bypass Input Device VFD0008R1 Figure 1 Functional Diagram of Typical NEMA Type 3R 3RHE Bypass The NEMA Type 3R 3RHE bypass consists of a SED2 NEMA Type 3R 3RHE bypass enclosure and controls NEMA Type 3R 3RHE bypass components Figure 2 and 4 include Control terminal block Drive Off Bypass switch Bypass On light Drive Test On ...

Page 13: ...TROL TRANSFORMER INPUT CONTACTOR BAFFLE GROMMETS HEATER LINE REACTOR RELAYS POWER FUSES OUTPUT CONTACTOR Enclosure 3R Frame ABC and 3RHE Frame Size B Enclosure 3R Frame DE and 3RHE C and D SED2 VFD INPUT CONTACTOR BAFFLE GROMMETS HEATER TERMINAL BLOCK DISCONNECT SWITCH GROUND LUGS MOTOR OVERLOAD OUTPUT CONTACTOR BYPASS CONTACTOR LINE REACTOR CONTROL TRANSFORMER POWER FUSES RELAYS VFD0186R1 Enclosu...

Page 14: ...otor is connected to utility line power Remote Bypass Operation Requires a jumper between bypass control terminals 5 and 6 Requires that the Drive Off Bypass switch be in the BYPASS position The system goes to bypass by closing the bypass contactor and the bypass indicating light illuminates whenever bypass control terminals 1 and 2 are closed Customer Remote Start Input The motor is connected to ...

Page 15: ...e closed for the motor to be run in either the drive or bypass modes WARNING This contact disconnects the 120 Vac control power circuit Essential Service Mode Closing terminals 13 and 16 forces the bypass contactor to close regardless of the selected operation All calls to open the bypass contactor are ignored except the opening of this contact or the removal of main power WARNING All calls to ope...

Page 16: ... blocked and that any environmental substance such as snow or sand or other debris will not potentially block the air inlet 2 A heater is supplied with all outdoor enclosures to minimize the effects of condensation The heater is only powered when the main power to the enclosure is on If the unit has been de energized for any period inspect for and rectify any condensation in the enclosure before r...

Page 17: ...50 1272 51 1288 Depth 11 Inches ERHE Frame Size D VFD0228R1 44 1099 28 711 56 1424 57 1440 Depth 14 Inches Figure 4 NEMA 3RHE Enclosure Dimensions in Inches Millimeters Table 1 Type 3R Enclosure Approximate Weights Frame Size Wt Lb kg ABC 130 59 DE 300 136 F 550 249 Table 2 Type 3RHE Enclosure Approximate Weights Frame Size Wt Lb kg B 150 68 C 220 100 D 330 150 NOTE Exact weight will be affected b...

Page 18: ...e Table 1 for approximate weights Make certain SED2 operator panel bypass switches and disconnect are accessible Secure enclosure in place CAUTION Leave 1 foot 305 mm between the NEMA Type 3R 3RHE Bypass and any adjacent solid structure that is not used for mounting purposes Leave 3 feet 914 mm between the NEMA Type 3R 3RHE Bypass and any other NEMA Type 3R 3RHE Bypass or VFD 3 Cooling Filter Note...

Page 19: ...BYPASS ON LIGHT DRIVE OFF BYPASS SWITCH DRIVE TEST ON OFF SWITCH HEATER FINGER GUARD AIR INLET DOOR ANTI LOCK DEFEATABLE MECHANISM CONDUIT LOCATION SHADED AREA ONLY Figure 6 Enclosure 3R Frame DE and 3RHE Frame C and D Dimensions in Inches Mm BYPASS ON LIGHT DRIVE OFF BYPASS SWITCH DRIVE TEST ON OFF SWITCH HEATER FINGER GUARD AIR INLET FAN FINGER GUARD EXHAUST 19 483 1 25 1 25 1 25 DISCONNECT SWIT...

Page 20: ...3 If applicable route communications wiring P1 in separate conduit into enclosure Figure 11 through Figure 13 Continue to route communications wiring to VFD and terminate per SED2 VFD Startup Operation and Maintenance Manual 125 3201 CAUTION If applicable route communications wiring with maximum separation from all other wiring If wiring through bypass enclosure run communication wiring with maxim...

Page 21: ...L OUTPUT LOAD REACTOR SUPPLIED LOOSE A2 B2 C2 A1 B1 C1 OPTIONAL INPUT LINE REACTOR ONLY SUPPLIED ON UNITS WITH BYPASS Figure 8 NEMA Type 3R 3RHE Bypass Power Circuit NOTES 1 Branch circuit protection to be provided by installer per UL508A if not provided with drive 2 For bypass operation modify these drive parameters P0704 0 and P0704 1 3 3 Control and communication wiring should be 300V UL minimu...

Page 22: ...IOMETER 4 7K OHM VFD 24 VDC POWERED 0 4 mA DEVICE POWER CONSUMPTION CANNOT EXCEED 100mA POWER mA M2 BYPASS CONTROL TERMINATIONS 1 3 2 5 4 6 8 7 10 9 11 12 13 14 CONTROL TERMINATIONS LOCATED IN BYPASS ENCLOSURE CBT 1 15 16 CUSTOMER REMOTE START PROVIDE DRY CONTACT INSTALL JUMPER FOR LOCAL BYPASS OPERATION CUSTOMER SUPPLIED SAFETIES ESSENTIAL SERVICE ENABLED INSTALL JUMPER FOR REMOTE BYPASS OPERATIO...

Page 23: ...R 18 M3 OFF ON xo DRIVE TEST INSTALL JUMPER FOR REMOTE BYPASS OPERATION 5 7 DR1 DRIVE RELAY 1 21 VFD1 CONTROL TERMINALS 22 TRANSFORMER PRIMARY CONTACTS 230 480 575V PRIMARY VOLTAGE ACTUAL CONNECTIONS VARY WITH VOLTAGE SECONDARY VOLTAGE 115 VAC ESSENTIAL SERVICE ACTIVE 14 13 14 13 14 13 10 INSTALL JUMPER FOR LOCAL BYPASS OPERATION SHIPPED WITHOUT JUMPER SHIPPED WITH JUMPER 12 8 A1 A2 A1 A2 A1 A2 14...

Page 24: ...1 Routing of Power and Control Wiring for Enclosure Frame Size ABC 3RHE AB SED2 VFD TERMINAL BLOCK BYPASS CONTACTOR DISCONNECT GROUND LUGS 2 MOTOR OVERLOAD CONTROL TRANSFORMER INPUT CONTACTOR BAFFLE GROMMETS 5 HEATER MOTOR WIRING INPUT POWER WIRING T1 T3 T2 L1 L3 L2 MOTOR OVERLOAD DISCONNECT GROUND LUGS INPUT POWER WIRING TO DISCONNECT L1 L2 L3 AND TO GROUND LUG MOTOR WIRING TO MOTOR OVERLOAD T1 T...

Page 25: ...LOAD DISCONNECT GROUND LUGS INPUT POWER WIRING TO DISCONNECT L1 L2 L3 AND TO GROUND LUG MOTOR WIRING TO MOTOR OVERLOAD T1 T2 T3 AND TO GROUND LUG TERMINAL BLOCK DISCONNECT GROUND LUGS 2 MOTOR OVERLOAD OUTPUT CONTACTOR BYPASS CONTACTOR LINE REACTOR CONTROL TRANSFORMER POWER FUSES AIR FILTER FAN VFD0192R1 Figure 13 Routing of Power and Control Wiring for Enclosure Frame Size F ...

Page 26: ...me conduit as the drive output wires 4 If a disconnect is mounted on the load side of your drive it is desirable to wire an auxiliary contact to the drive that will disable drive operation when the disconnect opens The wiring for this contact must not be run in the same conduit as the drive output wires 5 Inverter duty motors are recommended Install motors within their guidelines Use dV dT filters...

Page 27: ...Connection Terminals To access the mains power and motor terminals remove the operator panel cover and I O module 5192J08 1 5192J09 1 Removing Operator Panel BOP or AOP 5192J16 2 1 Removing Terminal Cover Figure 15 Access to Connection Terminals for SED2 Frame Size A ...

Page 28: ...ss Operating Instructions 20 Siemens Building Technologies Inc 1 VFD0068R1 Figure 16 Access to Connection Terminals for SED2 Frame Size B and C 3 1 2 5 6 4 5192J13 Figure 17 Access to Connection Terminals for SED2 Frame Size D and E ...

Page 29: ...Installation Siemens Building Technologies Inc 21 2 3 4 1 5 6 VFD0070R1 Figure 18 Access to Connection Terminals for SED2 Frame Size F ...

Page 30: ...A17 5_3__X ABC 7 5 5 5 22 0 14 4 35 4 14 10 18 22 2 25 20 25 100 14 2 35 4 VBA17 5_3__XHT1 DE 7 5 5 5 22 0 14 1 50 4 14 10 18 22 2 25 20 25 100 14 2 35 4 VBA110 _3__X ABC 10 7 5 28 14 4 35 4 18 3 27 40 3 1 4 5 22 32 125 14 2 35 4 VBA110 _3__XHT1 DE 10 7 5 28 14 1 50 4 18 3 27 40 3 1 4 5 22 32 125 14 2 35 4 VBA115 _3__X HT1 DE 15 11 0 42 14 1 50 4 18 3 27 40 3 1 4 5 40 50 200 14 2 35 4 VBA120 _3__X...

Page 31: ...C 7 5 5 5 22 14 4 35 4 14 10 18 22 2 25 20 25 100 14 2 35 4 VBA27 5_3__XHT1 DE 7 5 5 5 22 14 1 50 4 14 10 18 22 2 25 20 25 100 14 2 35 4 VBA210_3__X ABC 10 7 5 28 14 4 35 4 18 3 27 40 3 1 4 5 22 32 125 14 2 35 4 VBA210_3__XHT1 DE 10 7 5 28 14 1 50 4 18 3 27 40 3 1 4 5 22 32 125 14 2 35 4 VBA215_3__X HT1 DE 15 11 0 42 14 1 50 4 18 3 27 40 3 1 4 5 40 50 200 14 2 35 4 VBA220_3__X HT1 DE 20 15 0 54 14...

Page 32: ...1 16 60 14 2 35 4 VBA315_3__X____ ABC C HE 15 11 0 21 14 4 35 4 14 10 18 22 2 2 5 17 22 80 14 2 35 4 VBA320_3__X HE1 ABC C HE 20 15 0 27 14 1 50 4 18 3 27 40 3 1 4 5 22 32 125 14 2 35 4 VBA320_3__XHT1 2 DE D HE 20 15 0 27 14 1 50 5 6 18 3 27 40 3 1 4 5 22 32 125 14 2 35 4 VBA325_3__X____ DE D HE 25 18 5 34 14 1 50 5 6 18 3 27 40 3 1 4 5 28 40 150 14 2 35 4 VBA330_3__X HT1 DE D HE 30 22 0 40 14 1 5...

Page 33: ... 11 0 17 14 4 35 4 14 10 18 22 2 2 5 14 20 80 14 2 35 4 VBA415 _3__XHT1 DE 15 11 0 17 14 1 50 4 14 10 18 22 2 2 5 14 20 80 14 2 35 4 VBA420 _3__X ABC 20 15 0 22 14 4 35 4 14 10 18 22 2 2 5 17 22 80 14 2 35 4 VBA420 _3__XHT1 DE 20 15 0 22 14 4 35 4 14 10 18 22 2 2 5 17 22 80 14 2 35 4 VBA425 _3__X HT1 DE 25 18 5 27 14 1 50 5 6 18 3 27 40 3 1 4 5 22 32 125 14 2 35 4 VBA430 _3__X HT1 DE 30 22 0 32 14...

Page 34: ... in the purchase order by matching the nameplate data for each unit to the purchase order 4 Verify that the drive has been installed in accordance with the mechanical and electrical installation sections in the SED2 VFD Startup Operation and Maintenance Manual 125 3201 Also verify that the NEMA Type 3R 3RHE Bypass has been installed in accordance with the Environmental Conditions section of this m...

Page 35: ... are simultaneously operated by the drive the sum of all motor rated FLA values must be less than or equal to that of the bypass controlling them Individual motor protection per local code is provided 12 Record any other connections to the drive by terminal number to determine if special programming is required 13 If applicable verify that the building automation system logic is ready to perform a...

Page 36: ...ng conditions are met The Drive Off Bypass switch is OFF For units with three contactors the Drive Test ON OFF switch is OFF 4 Apply power to the drive and bypass package Make sure that all three power phases are present and that the input voltage is correct for the system being set up Then move the Drive Off Bypass switch to the DRIVE position At this time if the display indicates a fault press t...

Page 37: ...meter P1121 If excessive vibration of the driven load is noted at specific input frequencies use Skip Frequency Parameters P1091 through P1094 to eliminate this vibration 11 Determine whether the remote speed reference is a 0 to 10 Vdc or a 4 to 20 mA signal Connect signal wires and place analog input DIP switch in the appropriate position 11 Check the signal for proper polarity Observe if the rem...

Page 38: ... side of the circuit breaker disconnect switch This will affect rotation in the bypass operation only Once connections are complete and tight reapply incoming power and repeat Step 15 to recheck the rotation direction 17 Verify that running at full speed will NOT damage the system Run the motor in bypass by turning the Drive Off Bypass switch to BYPASS Record all the phase voltages and currents at...

Page 39: ...ng procedure set parameter P3900 3 This setting performs the necessary motor calculations and sets all remaining parameters those not included in P0010 1 to the factory default values If 3900 is set to a value greater than 0 P0010 is automatically reset to 0 If P0010 1 the SED2 cannot start The process of performing motor calculations and setting all parameters to factory default values is only po...

Page 40: ...commissioning P0010 is automatically set back to 0 P0100 Operation for Europe N America 0 50 Hz kW Europe factory default 1 60 Hz hp North America 2 60 Hz kW North America The setting of Motor Frequency and Unit of Measurement DIP switch 2 overrides P0100 settings 0 and 1 1 Press to advance to parameter P0100 2 Press to access the parameter values level 3 Press to advance to 1 4 Press to confirm a...

Page 41: ...rent A from motor nameplate 1 Press to advance to parameter P0305 2 Press to access the parameter values level 3 Press to advance to nominal current 4 Press to confirm and save the setting Setting Motor nameplate Default Varies by model P0307 Rated Motor Power 0 kW or hp to 200 kW or hp Rated motor power kW or hp from motor nameplate If P0100 1 60 Hz hp North America then motor power is in hp 1 Pr...

Page 42: ...rameter P0308 or P0309 2 Press to access the parameter values level 3 Press to advance to nominal cosPhi or motor efficiency 4 Press to confirm and save the setting Setting Motor nameplate P0308 Default 0 00 P0309 Default Varies by model hp voltage dependent P0310 Rated Motor Frequency 12 Hz to 650 Hz Rated motor frequency Hz from motor nameplate Pole pair number is recalculated automatically if t...

Page 43: ...rameter is changed 1 Press to advance to parameter P0311 2 Press to access the parameter values level 3 Press to advance to nominal motor speed 4 Press to confirm and save the setting Setting Motor nameplate Default Varies by model P0640 Motor Overload Factor 10 to 400 Limited to the maximum SED2 output current rating or to 400 of the rated current P0305 whichever is lower NOTE This parameter is a...

Page 44: ...ging this parameter resets to default all settings on the selected item For example changing from 1 to 2 resets all digital inputs to default settings P0700 1 Selection of Command Source Start Command Selects the command source as follows 0 Factory default setting 1 BOP keypad 2 Terminal digital input 4 USS on BOP link AOP 5 USS on COM link 6 CB Communications board or module on COM link P1 N2 1 P...

Page 45: ...o index 0 IN000 AUTO 4 Press to confirm index selection 5 Press to advance to 2 6 Press to confirm and save the setting Setting 2 Default 2 P1000 1 Selection of Frequency Setpoint Speed Command Source Selects the frequency setpoint source as follows 1 Motor potentiometer setpoint AOP 2 Analog input 3 Fixed frequency 4 USS on BOP Link AOP 5 USS on COM link 6 CB Communications board or module on COM...

Page 46: ...to 30 Max Default 10 P1082 Maximum Motor Frequency 0 Hz to 650 Hz Maximum motor frequency at which the motor will run regardless of the frequency setpoint This value applies to both clockwise and counterclockwise rotation 1 Press to advance to parameter P1082 2 Press to access the parameter values level 3 Press to advance it desired value 4 Press to confirm and save the setting Site Setting Defaul...

Page 47: ...t with set ramp rates such as from a PLC achieve optimum SED2 performance by setting ramp time P1120 and P1121 slightly shorter than those of the PLC P1121 Ramp down time 0s to 650s 1 Press to advance to parameter P1121 2 Press to access the parameter values level 3 Press to advance it desired value 4 Press to confirm and save the setting Site Setting Default 30 Typical fan 120s Typical pump 30s N...

Page 48: ...tion and with I O reset 3 End with motor calculation but without I O reset recommended with SED2 with bypass option 1 Press to advance to parameter P3900 2 Press to access the parameter values level 3 Press to advance to 1 4 Press to confirm the setting Setting 1 Default 0 NOTES 1 P0010 must always be set back to 0 before operating the motor 2 If P3900 is greater than 0 on completion of commission...

Page 49: ...rt is always active only in direction of setpoint 5 Flying start is active if power on fault OFF2 only in direction of setpoint 6 Flying start is active if fault OFF2 only in direction of setpoint 1 Press to enter the SED2 parameter mode and to r0000 2 Press to advance to parameter P1200 3 Press to access the parameter values level 4 Press to advance to desired setting 5 Press to confirm and save ...

Page 50: ...t Sets factor by which the output frequency changes during flying start to synchronize with the turning motor This value entered in relative to the default time factor defines the initial gradient and influences the time taken to search for the motor frequency The search time is the time taken to search through all frequencies between f_max 2 x f_slip to 0 Hz 1 Press to enter the SED2 parameter mo...

Page 51: ...d For these settings it is fundamental that the drive only restarts if it has been in a RUN state at the time of the faults F0003 etc The inverter will acknowledge the fault and will restart the drive after a blackout or brownwout It is necessary that the ON command is wired via digital input DIN P1210 4 Restart after supply power brownout P1211 disabled For these settings it is fundamental that t...

Page 52: ...nverter functions the same as P1210 6 trip on brownout blackout or fault but uses P1211 and only sets the fault bit P0731 P0732 52 3 when the specified number of restarts defined in P1211 has expired If no trip occurs after 2 hours the fault counter is reset 1 Press to enter the SED2 parameter mode and to r0000 2 Press to advance to parameter P1211 3 Press to access the parameter values level 4 Pr...

Page 53: ...ects the time seconds before the SED2 is restarted for the first time if P1210 automatic restart is activated 1 Press to enter the SED2 parameter mode and to r0000 2 Press to advance to parameter P1212 3 Press to access the parameter values level 4 Press to advance to desired value 5 Press to confirm and save the setting Minimum 0 Default 3 Maximum 10 Suggested 10 P1213 Restart Time Increment Sele...

Page 54: ... voltage to prevent overvoltage trips on high inertia systems Vdc max automatically increases ramp down times to keep the DC link voltage r0026 within limits 0 Vdc controller disabled 1 Vdc max controller enabled 2 Reserved 3 Reserved 1 Press to enter the SED2 parameter mode and to r0000 2 Press to advance to parameter P1240 3 Press to access the parameter values level 4 Press to advance to desire...

Page 55: ...he parameter values level 4 Press to advance to desired value 5 Press to confirm and save the setting Minimum 4 Default Varies by model hp voltage dependent Maximum 16 NOTES 1 Minimum pulse frequency depends on P1082 maximum frequency and P0310 rated motor frequency 2 At 4 kHz full output current is obtained up to 50 degrees C CT mode over 50 degrees C full output may be obtained at 8 kHz 3 If sil...

Page 56: ...ay r0000 2 Press to advance to parameter P1910 3 Press to access the parameter values level 4 Press to advance to setting P1910 1 Press to confirm and save the setting When P1910 1 Alarm A0541 motor data identification active is output and internally P0340 is set to 3 Initiate the measuring operation with a continuous steady state ON command The motor aligns itself and current flows through it Dia...

Page 57: ...TES 1 Motor must be cool to perform motor data identification 2 Before selecting motor data identification perform quick commissioning 3 This measurement may take several minutes depending on motor size 4 When P1910 1 the calculated value for stator resistance P0350 is overwritten 5 When P1910 2 the values already calculated P0350 are not overwritten 6 When choosing the setting for measurement obs...

Page 58: ...vel 4 Press to advance to 30 5 Press to confirm and save the setting 6 Press to go to parameter P0970 7 Press to access the parameter values level 8 Press to advance to 1 9 Press to confirm and save the setting P0010 Setting 30 Default 0 P0970 Setting 1 Default 0 NOTES 1 First set P0010 30 2 Stop SED2 that is disable all pulses before you reset parameters to factory default values 3 The following ...

Page 59: ...default you must reset these parameters as follows Parameter Setting P0704 in000 3 P0704 in001 3 P0732 52 2 default NOTE Changing P0700 resets all digital inputs and P0704 will require programming Required SED2 parameters for automatic bypass on a drive fault are as follows Parameter Setting P0748 P0731 52 3 NOTE Follow wiring as noted in the NEMA Type 3R Bypass Operation Overview section Automati...

Page 60: ...Drive Specifications Drive Specification Description Input voltage and power ranges 3 phase Amps 200V to 240V 3 AC 10 1 2 hp to 60 hp 2 3 Amps to 154 Amps 380V to 480V 3 AC 10 1 2 hp to 125 hp 1 2 Amps to 178 Amps 500V to 600V 3 AC 10 1 hp to 125 hp 2 3 Amps to 125 Amps Input frequency 47 Hz to 63 Hz Output frequency 0 Hz to 150 Hz Power factor 0 9 total 0 97 displacement VFD degree of efficiency ...

Page 61: ...cked motor Motor overtemperature l 2 t PTC Over temperature Parameter PIN protection Standards UL cUL CE conformity Conformity with EC Low Voltage Directive 73 23 EEC NOTE SED2 Compliance with EN61000 3 12 From September 1st 2005 all electrical apparatus covered by the EMC directive will have to comply with EN61000 3 12 Limits for harmonic currents produced by equipment connected to public low vol...

Page 62: ...sure Run relay has failed Loose control wire connection Drives digital input 1 is not programmed appropriately Main input fuses clear when motor is run in bypass The short circuit protection supplied by the factory is approximately 1 5 times NEC listed motor current rating Some applications and motor characteristics may require up sizing this protection If this is required in the field ensure that...

Page 63: ...ndary Fuse F3 208V Bussmann Littlefuse LP CC 3 5 Bussmann Littlefuse LP CC 3 5 240V Bussmann Littlefuse LP CC 3 2 Bussmann Littlefuse LP CC 3 5 480V Bussmann Littlefuse LP CC 1 6 Bussmann Littlefuse LP CC 3 5 575V Bussmann Littlefuse LP CC 1 25 Bussmann Littlefuse LP CC 3 5 NEMA Type 3R Bypass Enclosure DE and F 750 VA Transformers Voltage Primary Fuse F1 and F2 Secondary Fuse F3 208V Bussmann Lit...

Page 64: ...ens Building Technologies Inc Industry Sector 1000 Deerfield Parkway Buffalo Grove IL 60089 4513 Tel 1 847 215 1000 Fax 1 847 215 1093 Siemens Building Technologies Ltd 2185 Derry Road West Mississauga ON L5N 7A6 Canada Tel 1 905 819 5800 www sbt siemens com ...

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