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Summary of Contents for VT-700

Page 1: ...PRELIMINARY GEK 228IS VT 700 GENERAL PURPOSE DUPLEX DRIVE SYSTEM DRIVE CODE AC 3061 INSTRUCTION MANUAL FOR INSTALLATION OPERATION TROUBLE SHOOTING GENERAL ELECTRIC...

Page 2: ...Special Purpose Equipment Receiving Handling and Storage Equipment Functional Descripticn Function of Controls and Indicators Location of Controls Indicators and Assemblies Theory of Operation INSTAL...

Page 3: ...ing SCR s SPARE PARTS RECOMMENDATION General Recommended Spare AssembJies t Subassemblies and Printed Circuit Card Boards DOCUMENTATION DRAWINGS FURNISHED General Documentation Drawings Prints APPENDI...

Page 4: ...U Door 2 6 Location of Regulator Adjustments 2 7 Location of Assemblies and Controls Inside C U 2 8 Simplified Block Diagram VT 700B 2 9 Sensor Installation 3 4 Functional Flow Diagram 9 5 LIST OF TA...

Page 5: ......

Page 6: ...d sufficiently for the purchaser s purpose the matter should be referred to the General Electric Company 1 2 SAFETY PERSONNEL AND EQUIPMENT The following paragraphs list some general safety reminders...

Page 7: ...TO ADJUST TROUBLESHOOT OR MAINTAIN ANY DRIVE SYSTEM DESCRIBED HEREIN When working on or near the equipment with power voltage applied i ts recommended that all metal objects such as rings watches and...

Page 8: ...rom the date of shipment by the Company 1 3 2 Receipt of Shipment All equipment is factory inspected before shipment and is shipped in good condition Any damages or shortages evident when the equipmen...

Page 9: ...logic unit and a starter for operation of the constant speed motor 2 2 1 Power and Control Unit Input voltage one of three 200 230 or 460VAC 3 phase 60 hertz The power unit contains the SCR assembly...

Page 10: ...he controls indicators and adjustments with a brief functional descriPtion This table is cross referenced to the illustrations of the equipment 2 3 2 Location of Controls Indicators and Assemblies Fig...

Page 11: ...mmand signal to the power conversion unit Its other functions include system response stability and power conversion module protection in the form of current limiting 2 3 3 3 Power Conversion Module T...

Page 12: ...e RUN relay coil which causes the power ON light to extinguish and also connects the regulator input signal to common causing the motor to stop Provides a visual indication of motor run voltage brilli...

Page 13: ...koff arm to provide balanced range Provides a means of setting the system sensitivity to control the motor response time to a pressure change Driver Coordination Provides signal amplification and Card...

Page 14: ...FIGURE 2 1 LOCATION OF CONTROLS AND INDICATORS CONTROL UNIT fCU DOOR 2 6...

Page 15: ...mum protection 50 n 0 cz c o e C 5i xJ 1 0 m 3 m N me I Zc N c 0 0 193X741ABG03 STABILITY fRl AAHGE ADJ 193X237AAGOl CURRENT LIMIT R ZENO ADJ 193X236ABGOl NOTE These cards have been factory bijl_d for...

Page 16: ...RUN AUTO SPR FIGURE 2 3 LOCATION OF ASSEMBLIES AND CONTROLS INSIDE CONTROL UNIT CUI 2 8...

Page 17: ...R ON START AUTO NO 1 NO 2 STOP PUMP PUMP I Jr 0 cr o I0 COMMAND AND LOGIC AUTO NO 2 PUMP TRANSFER FUNCTION to 11 VAC EXT PWR DRIVER POWER o 0 C CPT 115V REGULATOR 200 230 OR 460V PH 60 HERTZ A CB CONV...

Page 18: ...osure Actual wire connections made between control devices and power devices within the enclosure as well as outgoing terminal points are shown on this type diagram c The Interconnection Diagram indic...

Page 19: ...en the motor and the pump to compensate for possible misalignment is recommended To minimize introducing noise into the hydraulic system it may be desirable to provide vibration isolation between the...

Page 20: ...disconnecting switch or circuit breaker CAUTION MAKE CERTAIN THE INPUT VOL TAGE FREQUENCY AND PHASE OF THE POWER SUPPLY AGREE WITH THE POWER UNIT NAMEPLATE ON THE CONTROL PANEL INSIDE THE ENCLOSURE I...

Page 21: ...form the following 1 Remove power from the system close the sensor shut off valves and remove the sensor check valves 2 Drin a r 16 inch hole in the clapper of the check valves 3 Re install check valv...

Page 22: ...D M rEI SP FULL LOAD RATFD SP FULL LOAD RATI I SF lIP ANP AMPS 5 211 20 25 18 12 S 1 39 29 35 26 11 5 13 10 51 38 46 34 23 11 15 69 57 62 51 31 25 5 20 89 62 80 56 40 28 25 102 73 92 66 46 33 30 114 8...

Page 23: ...TINUITY TEST BETWEEN 1T1 TO 1T4 1T2 TO lTS AND 1T3 TO 11 6 CONTINUITY IS DEFINED AS 10 OHMS OR LESS 3 5 2 Driver Puwer Unit Connections The interconnection diagram furnished with the equipment provide...

Page 24: ...ly seated in their respective sockets d Prior to the application of power to the units check all switches for ease of operation and manually actuate any relays circuit breakers Return all circuit brea...

Page 25: ...is true the second is not necessary 4 2 1 Apply external three phase AC power to Control Unit CU 4 2 2 Verify three phase power is available at the top of the CU circuit breaker and is of proper value...

Page 26: ...lace Mode switch to 112 press START button constant speed motor accelerates to top speed When motor starts to rotate check for correct direction of rotation as above Return switch to Ill 4 2 14 Set pr...

Page 27: ...s with an every 6 months recommendationll a Check all electrical connections for tightness b Look for signs of poor connections or overheating arcing dis coloration c Manually check cooling fans if su...

Page 28: ...ance of further damage to the replacement item due to causes be yond the suspected item 6 1 1 Troubleshooting Startup Table 6 1 provides a one to one correlation with the startup sequence In the left...

Page 29: ...nect the AC power into the unit and the th ee le ds going to the conversion unit b Using a multimeter selected to read ohms on the times lK scale check the forward and reverse re sistance of each indi...

Page 30: ...tate A faulty sea will not switch remaining in either an open or a conducting state d If any SCR s are suspected of being faulty from the above resistance checks the SCR conversion module should be re...

Page 31: ...mp is good 2 Verify continuity exists wires must be dis connected through zero pressure switch leads 3 Verify continuity exists wires must be dis connected through the motor thermal leads 4 Check fuse...

Page 32: ...be on 1TB R1 and the plus probe on lTB R3 If 18 to 20 volts is measured the sensor should be replaced 2 Using a VOM verify that the voltage read1ng is 3 to 5 VDC measured with the common probe on lTB...

Page 33: ...and plus lead on TB I THE FOLLOWING MEASUREMENTS RE QUIRE THE MODE SWITCH TO BE IN I 1 AND THE MANUAL SPEED FULLY CW ON 5 Check for approximately I SVDC to 2 5 with YOM common lead on TB 15 and plus l...

Page 34: ...10 readings 11 NOTE THE FOLLOWING StEPS REQUIRE THE USE OF AN OSCILLOSCOPE h1 ARNING THE OSCILLOSCOPE MUST BE ISOLATED FROM EARTH GROUND HIGH VOLTAGE THEREFORE MAY BE PRESENT ON THE OSCILLOSCOPE CHAS...

Page 35: ...ination card from the regulator With the VOM common lead on TB 1 and the lead on TB 14 adjust the ZERO ADJI1 potentio meter on the driver coordination card to just obtain the minimum voltage possible...

Page 36: ...with a minimum of down time readily available on hand spares are a must For further information on the Speed Variator Products Department Card Exchange Plan contact your local General Electric Compan...

Page 37: ...installation and opera tion of yo r sy tem 8 1 1 Documentation a VT 700 Inetruqt on manua b SenSQr Techn cal Bulletin c Special Cont ol Devices Instru tions Bull tins if appli cable 8 1 2 DrawingsJ r...

Page 38: ...em Lastly AC power is supplied to the Control Power Transformer CPT which in turn supplies the 11SVAC power for the control circuitry and its associat d control relays The control power transformer al...

Page 39: ...cillator circuit which produces a continuous pulse train that is sent to each of the three gate pulse generator cards The three adjustments on the coordination card are stability range and response Th...

Page 40: ...input signal of the gate pulse generator cards which stops their operation i e lockout signal means the stopping of operation of the gate pulse generator cards which in turn will not allow the power c...

Page 41: ...erature condition which if reached will de energize FRl relay shutting the drive down 9 1 6 AC MOtor The KXA motor reacts to the amount of conduction that the SCR s have allowed and provides the prope...

Page 42: ...OGIC FLOW If 11SVAQ 101 Co r CONY MODuLE MiiTOR J MA2 OVERLOAD OLA OLA OLA r SvSTeM PROTECTIVE SWITCHES 117 118 IF EXTERNAL SWITCHES ARE NOT USED A JUMPER MUST BE INSTALLED FROM 101 TO 118 102 FR1 FR2...

Page 43: ...T W TH MECHANICAL DIREC FULCRUM INTERLOCK t DISCONNECTS I CK LINE FUSED METERS PUSH BUTTONS B 0 BLOWOUT N O Ne NO NORMALLY OPEN N e NORMALL Y CLOSED o 0 2 l l He HOLDING COIL D C OPERATING COIL I BRE...

Page 44: ...NOTES...

Page 45: ...GENERAL ELECTRIC GENERAL ELECTRIC COMPANY SPEED VARIATOR PRODUCTS DEPARTMENT ERIEI PENNSYLVANIA 16501 5 V PO...

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