SE-G1 Technical manual
Contents
1. Standards 13 T Technical data 11 Temperature monitoring 7 Trouble shooting 13 Page 14 Technical manual SE G1 Page 15 Innovative and energy saving climate control When it comes to climate control Lodam is one of the most experienced you can turn to For more than four decades we have developed produced and implemented electronic solutions dedicated to optimising applications like Compressors Condensing units Heat pumps Air conditioning Refrigerated truck and trailer Reefer containers We know the importance of reliable energy efficient operation and constantly push techno logical boundaries to bring you the most innovative and forward thinking solutions As part of the BITZER Group we are backed by one of the world s leading players in the refrigeration and air conditioning industry This alliance provides us with extensive network and application knowhow and allows us to stay at the forefront of climate control innovation And to help ensure comfortable surroundings for humans and reliable protection of valuable goods anywhere in the world For more information visit www lodam com Lodam electronics a s Kaervej 77 Tel 45 7342 3737 6400 S nderborg Fax 45 7342 3730 Denmark lodam lodam com 23 01 2015 Contents are subject to change without notice2. phase loss Page 7 6 Examples of application Use 6 1 Connection L Power supply N Neutral Unnamed PTC element two wires 11 Relay common 12 Relay NO Error condition 14 Relay NC Ok condition Page 8 Technical manual SE G1 6 2 Compressor with soft starter 1 2 3 4 5 6 7 8 9 10 11 12 L1 O e L2 O L3 O F4 F3 4A N O 4 F1 T PE O4 901 01 F2 S1L e oe eo v S2E 7 B1 K1 ox K1 4 8 3 Kat L 9 F13 8 F5IP 7 K1 K1 8 8 N1 B1 8 A F6 P lt 7 L1 Black L1 L 11 Pi L2 Brown L2 l L3 Blue L3 SE G1 1 Fl 32 N 12 14 E13 2 H1 X K1 K2T Y1 Hn e 300s Page 9 6 3 Legend for the schematic diagrams B1 F1 F2 F3 F4 F5 F6 F13 H1 K1 K2T Page 10 Control unit Main fuse Compressor fuse Control circuit fuse Oil heater fuse High pressure limiter Low pressure limiter Thermal motor overload relay Signal light Compressor fault Motor contactor Time relay Short cycling delay Compressor Soft starter ramp up time lt 2s Main switch PTC sensors in motor windings PTC Discharge gas temperature sensor Oil heater Control switch Manual reset Liqu
3. EN 61010 1 Safety requirement for electrical equipment for meas urement and control EN 61000 6 1 Immunity for domicil profession and light industry EN 61000 6 3 Emission for domicil profession and light industry UL 508 UL file number E334756 9 Trouble shooting Check if there is power to the unit according to specification If the power is ok Turn off the power for 5 seconds and see if the relay is energized after power on again ES If not turn off all the power to avoid risk of injury Unmount one of the cables to the PTC element in the motor If the measured resistance is above 11 4 kQ ffl5 the temperature of the PTC sensor is above the threshold limit and the relay has been released to protect the motor or installation f the measured resistance is more than 1 MQ there is a broken connection to the PTC sensor and the relay will not be engaged If the measured resistance is close to O Q there is a short circuit on the PTC sensor cables and there is no overheat protection If all three phases are within range and resistance is below 2 9 KQ ffl596 the protection module may be defect and needs replacement Page 13 10 Index C Compressor with soft starter 9 Connection 8 D Definitions 5 Drawings 12 F Functions 7 H How to 6 M Motor voltage 11 Mounting 12 O Operation voltage 11 P Phase failure monitoring 7 R Rotation direction monitoring 7 S
4. partly Any non follow ing of this user manual result in exclusion of all warranties guarantees and liabilities CopyrightO 2014 by Lodam electronics a s All Rights Reserved Disposing of the parts of the controller INFORMATION FOR USERS ON THE CORRECT HANDLING OF WASTE ELECTRI CAL AND ELECTRONIC EQUIPMENT WEEE In reference to European Union directive 2002 96 EC issued on 27 January 2003 and the related national legislation please note that 1 WEEE cannot be disposed of as municipal waste and such waste must be collected and disposed of sepa rately 2 The public or private waste collection systems defined by local legislation must be used In addition the equip ment can be returned to the distributor at the end of its working life when buying new equipment 3 The equipment may contain hazardous substances the improper use or incorrect disposal of such may have negative effects on human health and on the environment 4 The symbol crossed out wheeled bin shown on the product or on the packaging and on the instruction sheet indicates that the equipment has been intro duced onto the market after 13 August 2005 and that it must be disposed of separately 5 In the event of illegal disposal of electrical and elec tronic waste the penalties are specified by local waste disposal legislation Page 4 1 1 Reading instructions The following symbols are used to draw the reader s attention to different warning
5. ZLodam BY BITZER GROUP Lodam Compressor Protection Module Technical manual Version 3 0 Contents Ts Read this TIE sE s tort te eo et red a e rre aeta 4 11 Reading instructions ssssssssssssssssRRRR eene 4 12 Userrari al iet ttes ee cin dl o ca te eli 4 13 Safety oeie tinan II e e eevee se ee renale is ea ls ss e assa ea ssl 4 ZEXer Iceee 5 EMI E EUMU T 5 aod 6 cM zupcssac M MMC eC nc 7 5 1 Temperature monitoring ssssssssssssss eee 7 5 2 Rotation direction monitoring sssssssssssssm 7 5 3 Phase failure monitoring sssssssssss e 7 6 Examples of application use ssssssssssssssssR emen 8 6 CONNECTION R 8 6 2 Compressor with soft starter 00 00 00 c eee ece eee esse eee ese eteeeenes 9 6 3 Legend for the schematic diagrams 0 0 00 occ cece c cece eeee eee 10 6 4 Technical data 0 0 cece cee eee eee eee eene ens n V SBIc cc E 12 8 Standatds ee Tte te prd eM MM UE 13 9 Trouble Shoot re te eite te toe re ted ane tete ette testet utate oec 13 js de 14 WING TSS ae iss Lp 15 Page 2 Technical manual sea Page 3 Read this first The contents of this manual are subject to change without notice Lodam electronics holds the copyright to this user s manual The user shall follow any instructions given in this user manual entirely and not only
6. id Line Solenoid Valve Technical manual SE G1 6 4 Technical data Technical specifications Operation voltage 110 277 VAC 50 60Hz 3VA Motor voltage 200 600V 10 50 60 Hz Permitted ambient temp 30 C 60 C Relay Switch voltage 250V Continuous current max 2 5A Swiching capacity 300VA C300 Relative humidity 5 95 RH non condensing L1 L2 and L3 cable Length 300 mm Connector Ring connector for 1 4 stud L1 Black L2 Brown L3 Blue PTC measuring circuit Sensor type Thermistors according to DIN 44081 82 thermistor type 1 9in series R total 1 8 kO Switching point Relay off gt 11 4 KQ 596 Relay on 2 9 kO 596 Fuse required 4A quick blow Enclosure class Terminals IPOO Terminals Spade connectors 6 3 mm 0 8 mm 1 4 Field wiring markings Use 60 C copper conductors only Page 11 Drawings Mounting is for standard rail 35 mm according to DIN EN 60715 or with screws E Py i al ITA exin ul i PK P L u u B e n o Hd e Page 12 Technical manual a 8 Standards The product is manufactured according to the following standards RoHS 2002 95 EC Low voltage 206 95 EC 61010 1 Safety requirement for electrical equipment for measurement and control EMC 2004 108 EC 61000 6 x Generic EMC The following standards have been used
7. levels EH Importan information Danger General danger ES Danger High voltage Danger of electrical current or voltage 1 2 User manual Before installation the user should be thoroughly familiarized with this user manual especially with purposes installation and operation Special care should be taken when installing and connect ing external equipment PTC sensor high voltage etc and handling the modules correctly according to protection against ESD Installation of the SE GI must be performed by AN authorized personnel only All warranties are excluded in case installation is performed by unauthorized personnel or in case the SE G1 has not been correctly installed 1 3 Safety The SE G1 is a protection device and not a safety VAN component according to the Machinery Directive and can not be used in medical or life support equipment Before plant commissioning the service technician shall ensure that personal safety requirements are met in conformity with the Machinery Directive on the basis of safety estimations Electrical plant failures are to be immediately Solved even though no immediate danger exists the SE G1 and motor must be without power Technical manual a 2 General The protection device SE G1 is used for protection of scroll compressors equipped with softstarters Its relay is used in the safety chain for the compressor and will open in case of a failure Different sce
8. manual a 5 FUNCTIONS The SE GI has several monitoring functions which are listed in the following 5 Temperature monitoring One of the functions of the SE G1 is to work as a motor protection module By monitoring the resistance in a PTC sensor it will open its relay when the resistance of the PTC sensor increases above the limit as shown below The PTC sensor could for example be according to DIN 44081 82 The resistance of these PTC sensors is not linear but give a well defined steep rise in resistance when the threshold temperature of the PTC sensor is reached This is detected by the protective device and the relay is released and thereby cutting the control power as shown on the diagram below Alarm Lockout On PTC temperature 2 9 kOhm 11 4 kOhm Rerc Since the increase in resistance is so steep from 1 up to 9 PTC sensors can be coupled in series without raising the actual temperature threshold more than a few degrees Celsius There is a restart blocking function to prevent a motor from being started too soon after having been overheated A manual reset must be done by removing power from the module for minimum 5 seconds and then applying it again When power is turned on to the SE G1 module the PTC resistance is measured If the measured PTC resistance is below 2 9 kQ The relay is energized immediately If the measured PTC resistance is between 2 9 kQ and 11 4 KQ The relay is first e
9. narios can threaten the lifetime of the com pressor where the SE GI can protect Overheating The SE GI will protect against overheating by monitoring motor temperature by means of PTC sen sors mounted in the motors windings or in the hotgas In case of overheating the module will lock out and open the relay Wrong rotation direction The SE GI monitors the rotation direction of the phases at compressor start and will lock out and open the relay in case of wrong rotation direction Phase failure If a phase is missing at start up SE G1 opens the relay for 6 minutes After this period a start is allowed again Only a number of retries are allowed before a permanent lock out is performed The SE GI first starts monitoring of the phases 5 seconds after start up to allow the systern with the softstarter to become stable 3 Definitions Product range ESD HW NC NO PTC Electro Static Discharge Hardware electronics Normally Closed relay Normally Open relay Positive Temperature Coefficient sensor element Page 5 4 HOW tO Use the SE GI with a Scroll compressor Terminal box Page 6 Optional discharge gas temperature sensor External Control Safety o7 a o 1 1 R Contactor coil 14 Alarm lamp L 12 gt 2 nm 1 N Reset L SE G1 7 l ee Black Technical
10. nergized when the resistance is below 2 9 KQ i e the compressor has cooled down If the measured PTC resistance is above 11 4 kQ The relay is not energized and the module is locked and must be powered off to be released 5 2 Rotation direction monitoring The SE GI waits 5 seconds after compressor start for the softstarter and then the 3 phases for the compressor are monitored for 5 to 10 seconds against wrong rotation direction wrong phase sequence In case of a wrong rotation direction the relay is immediately de energized and the SE G1 locks A manual reset must be done by removing power from the module for minimum 5 seconds and then applying it again When the compressor is stopped a pressure difference in the compressor can make it turn backwards and thereby generating a false phase sequence Therefore the detec tion of phase sequence is disabled the first 10 seconds after a compressor stop to avoid a false alarm condition 5 3 Phase failure monitoring Phase failure monitoring waits for the softstarter and is started 5 seconds after compressor start In case of a phase loss during the first 5 to 10 seconds of monitoring the SE GI de energizes the relay and thereby breaks the security chain If the module is in the locked state a manual reset must be done by removing power from the module for minimum 5 seconds and then applying it again The count of the 4 events in sequence is reset when start is detected with no
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