BECKWITH ELECTRIC M-0245C, Instruction Book

Page 1: ...Instruction Book M 0245C High Speed Sync Check Relay ...

Page 2: ...or Power Plant and Industrial Site Motor Bus Transfer Verifies that the line voltage is within preset limits Verifies within one cycle if the phase angle is within preset limits SYNCHRONIZING High Speed Sync Check Relay M 0245C ...

Page 3: ...y Burden Motor Bus Voltage 0 15 VA burden Line Voltage 0 15 VA burden M 0245C Supply 12 VA burden Controls UPPER VOLTAGE LIMIT for Line Voltage 110 to 140 V ac LOWER VOLTAGE LIMIT for Line Voltage 90 to 120 V ac PHASE ANGLE LIMIT Ranges are available from 0 to 180 0 to 120 0 to 60 or 0 to 30 NOTE Accurately calibrated dials facilitate field adjustment without additional test equipment LED Indicato...

Page 4: ...available Highly stable instrument grade capacitors and resistors are used in critical measurement circuits to minimize the possibility of error Transient Protection All inputs and outputs are fully transient protected and will pass the ANSI C37 90 1 1989 Surge Withstand Capability SWC Test The Motor Bus and Line Input Voltages Status Relay outputs 120 V ac Power input and Breaker Close Circuit ou...

Page 5: ...quires two rack units space in a standard 19 rack May also be panel mounted horizontally or vertically Approximate Weight 15 lbs 6 8 kg Approximate Shipping Weight 20 lbs 9 1 kg The M 0245C includes a transparent cover to protect the knobs and prevent accidental resetting Patents The M 0245C High Speed Sync Check Relay is covered by U S Patents 4 218 625 and 4 256 972 Warranty The M 0245C High Spe...

Page 6: ... equipment in a test area the Protective Earth Terminal must be attached to a separate ground securely by use of a tool since it is not grounded by external connectors Do NOT operate in an explosive environment Do not operate this equipment in the presence of flammable or explosive gases or fumes To do so would risk a possible fire or explosion Keep away from live circuits Operating personnel must...

Page 7: ...atures are maintained Always replace components with those of equal or better quality as shown in the Parts List of the Instruction Book Avoid static charge This unit contains MOS circuitry which can be damaged by improper test or rework procedures Care should be taken to avoid static charge on work surfaces and service personnel Use caution when measuring resistances Any attempt to measure resist...

Page 8: ...Analog Output 5 Phase Angle Analog Output 5 Voltage Status Output Contact 5 Figure 2 External Connections 6 Phase Angle Status Output 7 Breaker Close Circuit 7 Enable Response Time 7 Phase Angle OK to Output Contact Response Time 8 4 3 Phase Angle Detection Circuit 8 Rate of Change of Phase Angle 8 4 4 Loss of Voltage Input Detection Circuits 8 Line Voltage Loss 8 Motor Bus Voltage Loss 8 Motor Bu...

Page 9: ... Option Component Location 15 Figure 8 Schematic X 0245 16 Figure 9 Variable Speed Motor Application Option Schematic Y 0264 18 Parts List 19 Phase Angle Limit Control Option 25 Parts Mounted to the Enclosure 25 B 0264 Variable Speed Motor Application Option 26 Beckwith Electric Co Printed in U S A 04 24 01 800 0245C IB 00 04 01 ...

Page 10: ...of a highly stable hybrid 10 V reference LEDs located on the front panel indicate the condition of the Line voltage with reference to the UPPER and LOWER VOLTAGE LIMIT settings Two Zero Crossing Detectors generate rectangular waveforms at the zero crossing of each input A logic gate provides a pulse width that is proportional to the phase difference between each input which is then integrated and ...

Page 11: ... as expected or until a calibration point is found which will not meet requirements These procedures should lead to a determination of the defective component CAUTION Do not reverse polarity of the V T leads to the rear terminal block if the unit is taken out of service for maintenance The possibility still remains however that under certain conditions i e loose wires causing an intermittent conta...

Page 12: ...UPPLY MONITOR ACTIVE AC to DC CONVERTER BUFFER AMPLIFIER ENABLE SYNC CHECK INPUT BUS VOLTAGE ANALOG OUTPUT 1 V 20 V ac PHASE ANGLE COMPARATOR PHASE OK 1 V 20 V ac BLOCK CLOSING STEP DOWN ISOLATION TRANSFORMER MOTOR BUS INPUT TRANSIENT PROTECTION ACTIVE AC to DC CONVERTER UPPER VOLTAGE COMPARATOR MAIN POWER SUPPLY NETWORK LINE VOLTAGE ANALOG OUTPUT 1 V 20 V ac 1 V 20 V ac INPUT LOSS DETECTOR LINE I...

Page 13: ...ve the clipped wires using a solder wick or syringe Be sure to leave the holes clear to facilitate insertion of the new component 4 When replacing integrated circuits make sure to insert the unit into the transipad so that the tab fits into the slot Once this is done there is only one way to insert the combination into the printed circuit board 5 Use a Weller Controlled Output Soldering Station mo...

Page 14: ...angle passes 30 8 Slowly reduce the phase angle the PHASE ANGLE OK LED should come on as the phase angle drops below 30 9 Repeat steps 4 through 8 with the PHASE ANGLE LIMIT dial set at 10 and 50 10 Return both inputs to 120 V rms 60 50 Hz Voltage Analog Output 1 Connect the positive lead of the multimeter to TB1 28 2 Connect the negative common lead of the multimeter to TB1 7 3 The dc voltage rea...

Page 15: ... Neutral Line Potential Input Neutral Line Potential Input Hot Phase Angle Analog Output Not used 0 Volts Common for Analog Outputs Should be Grounded Not Used Status Contact Closed when Voltage OK Status Contact Closed when Phase Angle OK 120 V ac Power Neutral 120 V ac Power Hot Line Voltage Analog Output Solid State Breaker Close Circuit Output Not Used Transient Suppressor Diode Close to Enabl...

Page 16: ... phase angle between the inputs at 20 and the PHASE ANGLE LIMIT dial set at midscale the incandescent bulb and all front panel LEDs should light 4 Slowly increase the phase angle above 30 the light bulb and the PHASE ANGLE OK LED should turn off 5 Return the phase angle between the sources to 20 6 The incandescent bulb should be lit 7 Remove the jumper from the Enable Sync Check Input TB1 20 to TB...

Page 17: ...ches 51 41 Hz K1 Hz 5 Slowly increase the Motor Bus frequency Pulses should stop as the frequency rises above approximately 51 41 Hz 4 4 Loss of Voltage Input Detection Circuits Line Voltage Loss Refer to Figure 4 Line Voltage Loss for the following section 1 Apply 120 V ac 60 50 Hz to the Bus voltage input 2 Apply 120 V ac 60 50 Hz to the Line voltage input 3 Place the Channel 1 probe on the anod...

Page 18: ...INCANDESCENT BULB TB2 A TB2 B TB2 C TB2 D TB1 24 TB1 25 TB1 26 DC SOURCE CONNECTIONS FOR BREAKER CLOSE CIRCUIT TEST CONNECTIONS FOR PHASE ANGLE STATUS CONTACT TEST 25 W INCANDESCENT BULB DC SOURCE Figure 3 Test Setup ...

Page 19: ... 10 M 0245C Instruction Book 15 15 0 CHANNEL 1 15 15 0 50 MS CHANNEL 2 20 MS 15 0 15 15 15 0 CHANNEL 1 CHANNEL 2 Figure 4 Line Voltage Loss Figure 5 Motor Bus Voltage Loss ...

Page 20: ...B c a V 7 6 3 1 e v a W e r a u q S 1 R f o d n E m o t t o B c a V 0 0 6 e v a W e n i S 7 0 1 R f o d n E m o t t o B c a V 3 0 6 e v a W e n i S 2 3 1 R f o d n E m o t t o B c d V 0 0 6 c d 5 3 1 R f o p o T c d V 7 4 4 c d 1 1 P T 1 1 t n i o P t s e T c d V 0 0 0 1 c d 8 P T 8 t n i o P t s e T c d V 8 8 4 1 c d 6 P T 6 t n i o P t s e T c d V 7 8 4 1 c d 3 R V f o m o t t o B c d V 2 9 2 2 ...

Page 21: ... B T 7 1 B T K 0 0 1 n e p O 3 1 B T 4 1 B T K 0 1 K 2 2 7 1 B T 9 1 1 B T K 1 0 0 Ω 7 1 B T 5 2 1 B T K 0 0 1 n e p O 7 1 B T 3 T f o 3 d a e L K 1 4 Ω 7 1 B T 3 T f o 5 d a e L K 1 4 Ω 4 2 1 B T 5 2 1 B T K 0 0 1 n e p O 6 2 1 B T 7 2 1 B T K 1 7 2 Ω B 2 B T A 2 B T K 0 0 1 n e p O B 2 B T C 2 B T K 0 0 1 n e p O C 2 B T B 2 B T K 1 n e p O B 2 B T 7 2 B T K 0 0 1 n e p O 1 T f o 4 d a e L 1 T f...

Page 22: ...tmeter reads 6 000 V dc at R50 9 Adjust R200 until the voltmeter reads 6 000 V dc at R116 10 Remove the clip leads from TB1 1 and TB1 4 and TB1 2 and TB1 3 11 Place a clip lead between TB1 1 and TB1 3 12 Place a second clip lead between TB1 2 and TB1 4 13 Attach the positive lead of the dc voltmeter to Test Point 1 TP1 14 Attach the negative lead to TB1 7 or C78 end 15 Supply 120 V ac 60 Hz to pow...

Page 23: ... 14 M 0245C Instruction Book Figure 6 Component Location B 0207 ...

Page 24: ... 15 Figure 7 Variable Speed Motor Application Component Location B 0264 ...

Page 25: ... 16 M 0245C Instruction Book ...

Page 26: ... 17 Figure 8 Schematic X 0245C ...

Page 27: ... R3 C8 2 0 953 953 953 C1 01 15 2 3 U1 6 7 8 4 R6 R5 R4 C9 2 0 825 953 953 C2 01 15 2 3 U2 6 7 8 4 1 10K 1 2W C3 100 pf 15 C7 47 C5 1 5 47K 1 2W C4 100 pf C10 47 C6 1 5 1 R7 200 P2 4 3 2 1 15 LM208H R9 LM208H R8 Figure 9 Variable Speed Motor Application Schematic Y 0264 ...

Page 28: ... shortest possible time Sufficient detailed description is also given to permit purchasing from an electronics parts house providing the part is of equal or better quality to insure reliable operation This may require some inter pretation of specifications which may be avoided by direct purchase from Beckwith Electric using the BECO NUMBER Note that in a few instances components are selected in fi...

Page 29: ... µF 100 10 40 V C71 000 00652 Capacitor Electrolytic 150 µF 75 10 75 V C74 000 00501 Capacitor Tantalum 3 9 µF 10 35 V C75 C76 000 00913 Capacitor Ceramic Disc 0 001 µF 10 100 V C77 C78 000 00504 Capacitor Tantalum 27 µF 10 20 V C81 000 00555 Capacitor Tantalum 4 7 µF 20 25 V C82 C83 C85 C87 Not Used C88 000 00817 Capacitor Polyester 1 µF 10 400 V C110 C111 000 00939 Capacitor Ceramic Disc 0 0047 ...

Page 30: ... R79 R83 R108 R121 installed see that option s parts list for R1 and R7 R177 R204 R206 values R2 R109 R142 200 00155 Resistor Carbon Film 1 5 M 5 R3 R17 R70 R82 180 00473 Resistor Carbon Comp 47 K 5 1 4 W R107 R110 R169 R4 R61 R73 200 00154 Resistor Carbon Film 150 K 5 R5 R60 R72 180 00563 Resistor Carbon Comp 56 K 5 1 4 W R6 R65 360 00093 Potentiometer 10 K Bourns 3009P 1 103 R7 R66 330 00588 Res...

Page 31: ... 1 4 W RN55C R50 R57 R105 R116 340 00501 Resistor Metal Film 10 K 1 1 4 W RN60C R51 R136 R166 200 00622 Resistor Carbon Film 6 2 K 5 R52 340 00585 Resistor Metal Film 75 K 1 1 4 W RN60C R53 R54 R126 R127 340 00701 Resistor Metal Film 1 M 1 1 4 W RN60C R55 330 00526 Resistor Metal Film 18 2 K 1 1 4 W RN60E R56 R131 R161 360 00119 Potentiometer 50 K 10 Allen Bradley 72B1G040S503W R58 R133 R163 330 0...

Page 32: ...irewound 3 3 Ω 5 2 W R176 200 00100 Resistor Carbon Film 10 Ω 5 R178 200 00202 Resistor Carbon Film 2 K 5 R179 R180 340 00443 Resistor Metal Film 2 74 K 1 1 4 W R181 200 00514 Resistor Carbon Film 510 K 5 R183 Not Used R184 200 00332 Resistor Carbon Film 3 3 K 5 R185 Not Used R186 R195 200 00472 Resistor Carbon Film 4 7 K 5 R187 Not Used R188 R189 200 00205 Resistor Carbon Film 2 M 5 R193 340 0001...

Page 33: ...Quad 2 Input NOR Gate Motorola MC14001BAL U4 400 00658 Varafet Intersil IT401A U5 U13 U16 U18 400 00633 Op Amp Motorola MLM108AG U6 U9 U10 U29 U31 400 00665 Quad Op Amp National LM224J U7 U15 540 00010 Multivibrator Motorola MC14538BAL U8 U14 U17 400 00656 Sample and Hold National LF298H U11 U12 U32 400 00636 Quad 2 Input AND Gate Motorola MC14081BAL U19 U20 400 00620 Op Amp National LF255H U21 U2...

Page 34: ...lm 2 49 K 1 1 8 W 1200 190 00502 Resistor Metal Film 10 2 K 1 1 8 W 600 190 00540 Resistor Metal Film 25 5 K 1 1 8 W 300 PARTS MOUNTED TO THE ENCLOSURE CR89 400 00230 Diode 6QD8 TB2 420 00051 Terminal Block Barrier Strip Cinch Jones 8 142Y 50 HZ OPTION B 0207 D1 R7 R66 330 00601 Resistor 100KΩ K1 1 4W R74 330 00632 Resistor 210KΩ K1 1 4W ...

Page 35: ...MKK C7 C10 010 00441 Capacitor 0 47 µF 1 50V Polystyrene F dyne PC12 47 50 1 C8 C9 010 00800 Capacitor 2 0 µF 5 50V Component Research H14B205DXW C11 C12 000 00553 Capacitor 2 2 µF 25V Tantalum Panasonic F25E2R2 R1 R5 340 00395 Resistor Metal Film 953 Ω 1 1 4 W RN60C R6 330 00389 Resistor Metal Film 825 Ω 1 1 4 W RN60E R7 360 00034 Potentiometer 200ý 20 Bourns 3386P 1 201 R8 200 00103 Resistor Car...

Page 36: ...urnished under this contract In no event shall the Seller be liable for special incidental exemplary or consequential damages including but not limited to loss of profits or revenue loss of use of the equipment or any associated equipment cost of capital cost of purchased power cost of substitute equipment facilities or services downtime costs or claims or damages of customers or employees of the ...

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Page 38: ...NC 6190 118th Avenue North Largo Florida 33773 3724 U S A PHONE 727 544 2326 FAX 727 546 0121 E MAIL marketing beckwithelectric com WEB PAGE www beckwithelectric com Beckwith Electric Co Printed in USA 800 0245C IB 00 04 01 ...