BECKWITH ELECTRIC M-0245C Instruction Book

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Page 1

Instruction Book

M-0245C High Speed Sync-Check Relay

Page 2

SYNCHRONIZING

High Speed Sync-Check Relay M-0245C

Motor Bus Transfer Relay for

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.

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M-0245C High Speed Sync-Check Relay Specification

High speed transfer of auxiliary services at a generating plant or the motor load in an industrial plant is highly desirable to prevent either damage to critical motors or an unplanned shutdown.

A significant induced voltage will remain at the terminals of a rotating machine for a period of time following removal of power. If, during the power transfer sequence, the phase angle of this voltage relative to the auxiliary source is ignored, severe damage to an expensive machine or process may result. The M-0245C High Speed Sync-Check Relay provides the means necessary to inhibit transfer if the phase angle is excessive or the line voltage is out of range.

Inputs

Motor Bus Voltage: 120 V ac nominal Line Voltage: 120 V ac nominal M-0245C Supply: 120 V ac ±10%, 60 to 400 Hz External Dry Contact Closure: Enables the synchronizing verification. This contact should be designed for low

voltage, low current signals.

■■

■ NOTE: All voltage inputs are isolated. The supply input and auxiliary source may be connected together

■■

externally, provided the voltage transformer from this auxiliary supply has sufficient capacity.

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 Indicators

UPPER VOLTAGE LIMIT - OK: Line voltage is less than the upper voltage limit setting. LOWER VOLTAGE LIMIT - OK: Line voltage is greater than the lower voltage limit setting. PHASE ANGLE LIMIT OK: Phase difference between the Line and Bus voltage inputs is less than the phase

angle limit setting. ENABLED: The external enable contact, rear terminal TB1-20 to TB1-21, is closed. OUTPUT CLOSED: The solid-state output circuit, rear terminal TB2-A to TB2-B, is closed.

Breaker Close Relay

Solid-state Breaker Close Circuit is capable of making and breaking an inductive current of 15 A at 300 V dc. The closing signal will remain until the enable contact is opened, provided phase angle and voltage remain within preset limits.

Response Time

Delay after power turn on: Approximately 2 sec. Output will be open during this period, regardless of other inputs.

Delay after closing enable input: 1/4 cycle. Output will be open until the M-0245C is enabled, regardless of other inputs.

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M-0245C High Speed Sync-Check Relay Specification

Delay after voltage change in or out of band: Generally ranges from 0 to 0.08 sec. Refer to the M-0245C

Application Guide for further details. Maximum delay after phase change in or out of band: 1 cycle

Status Relay Contacts

Line Source Voltage OK: Contact is closed when the voltage is within the upper and lower voltage limit settings. Phase Angle OK: Contact is closed when the phase angle between the Line and Motor Bus voltage inputs is

within the phase angle limit setting.

Analog Outputs

Phase Difference: 0 to 180° corresponding to 0 to 10 V dc (55.6 mV per degree) Line Source Voltage: 0 to 140 V ac input corresponding to 0 to 7 V dc output Motor Bus Source Voltage: 0 to 140 V ac input corresponding to 0 to 7 V dc output

■■

■ NOTE: Each analog output has an output impedance of 10 K referenced to rear terminal TB1-7. These outputs

■■

are suitable for use with existing or future supervisory control systems.

Reliability

The M-0245C High Speed Sync-Check Relay is assembled on a single glass-epoxy printed circuit board, thereby eliminating the need for plug-in connectors. All semiconductor components are hermetically sealed and of the highest and most reliable quality 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 output will withstand 1500 V ac, 60 Hz to chassis or instrument ground for one minute. Voltage inputs are electrically isolated from each other, from other circuits and from ground.

■■

■ NOTE: Use of varistor suppressors across contacts and from contacts to chassis ground is suggested if

■■

these contacts are to be tied to long wire runs.

Harmonic Filters

Many applications for the M-0245C High Speed Sync-Check Relay will involve power systems which incorporate loads such as variable speed drives, arc furnaces and converters which produce harmonics on the system. The M-0245C includes active filters on the bus and line voltage inputs to permit proper operation in these applications.

Environmental

Temperature Range: Units will operate properly over a temperature range of –40° to +80° C. Humidity: Stated accuracies are maintained under 95% relative humidity (non-condensing). Fungus Resistance: A conformal printed circuit board coating inhibits fungus growth. Seismic: Units are designed to meet extreme shock and vibration requirements.

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Physical

Size: 19" wide x 3-1/2" high x 13" deep (48.3 cm x 8.9 cm x 33.0 cm). Requires 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 Speed Sync-Check Relay is covered by a two year warranty from date of shipment.

The Specification is subject to change without notice.

BECKWITH ELECTRIC CO., INC.

6190 - 118th Avenue North • Largo, Florida 33773-3724 U.S.A.

PHONE (727) 544-2326 • FAX (727) 546-0121

E-MAIL [email protected]

WEB PAGE www.beckwithelectric.com

800-0245C-00 04/01

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WARNING

DANGEROUS VOLTAGES, capable of causing death or serious

injury, are present on the external terminals and inside the equipment. Use extreme caution and follow all safety rules when handling, testing or adjusting the equipment. However, these internal voltage levels are no greater than the voltages applied to the external terminals.

DANGER! HIGH VOLTAGE

– This sign warns that the area is connected to a dangerous high voltage, and you

must never touch it.

PERSONNEL SAFETY PRECAUTIONS

The following general rules and other specific warnings throughout the manual must be followed during application, test or repair of this equipment. Failure to do so will violate standards for safety in the design, manufacture, and intended use of the product. Qualified personnel should be the only ones who operate and maintain this equipment. Beckwith Electric Co., Inc. assumes no liability for the customer’s failure to comply with these requirements.

– This sign means that you should refer to the corresponding section of the operation

manual for important information before proceeding.

Always Ground the Equipment

To avoid possible shock hazard, the chassis must be connected to an electrical ground. When servicing 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 not remove the cover or expose the printed circuit board while power is applied. In no case may components be replaced with power applied. In some instances, dangerous voltages may exist even when power is disconnected. To avoid electrical shock, always disconnect power and discharge circuits before working on the unit.

Exercise care during installation, operation, & maintenance procedures

The equipment described in this manual contains voltages high enough to cause serious injury or death. Only qualified personnel should install, operate, test, and maintain this equipment. Be sure that all personnel safety procedures are carefully followed. Exercise due care when operating or servicing alone.

Do not modify equipment

Do not perform any unauthorized modifications on this instrument. Return of the unit to a Beckwith Electric repair facility is preferred. If authorized modifications are to be attempted, be sure to follow replacement procedures carefully to assure that safety features are maintained.

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PRODUCT CAUTIONS

Before attempting any test, calibration, or maintenance procedure, personnel must be completely familiar with the particular circuitry of this unit, and have an adequate understanding of field effect devices. If a component is found to be defective, always follow replacement procedures carefully to that assure safety features 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 resistances between points on the printed circuit board, unless otherwise noted in the Instruction Book, is likely to cause damage to the unit.

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Table of Contents

M-0245C High Speed Sync-Check Relay

Instruction Book

1.0 Introduction ................................................................................................................... 1

2.0 Theory of Operation...................................................................................................... 1

Motor Bus Undervoltage Monitor .................................................................................. 1

Input Loss Protection .................................................................................................... 1

3.0 Maintenance ................................................................................................................. 2

Figure 1 Block Diagram .............................................................................................

4.0 Test Procedure ............................................................................................................. 4

Equipment Required ..................................................................................................... 4

4.1 Component Replacement Procedure ........................................................................... 4

4.2 Test Procedures ........................................................................................................... 4

Upper Voltage Limit ...................................................................................................... 4

Lower Voltage Limit ...................................................................................................... 4

Phase Angle Limit......................................................................................................... 5

Voltage Analog Output.................................................................................................. 5

Phase Angle Analog Output ......................................................................................... 5

Voltage Status Output Contact ..................................................................................... 5

Figure 2 External Connections ...................................................................................

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 Bus Undervoltage Detector <25% ...................................................................... 8

Figure 3 Test Setup ...................................................................................................

Figure 4 Line Voltage Loss ......................................................................................

Figure 5 Motor Bus Voltage Loss .............................................................................

10 10

5.0 Typical Voltages ......................................................................................................... 11

Conditions................................................................................................................... 11

6.0 Typical Resistances ................................................................................................... 12

Conditions................................................................................................................... 12

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7.0 Calibration ..................................................................................................................13

Phase Angle Calibration ............................................................................................. 13

Figure 6 Component Location, B-0207 ....................................................................

Figure 7 Variable Speed Motor Application Option Component Location ................

Figure 8 Schematic, X-0245 ....................................................................................

Figure 9 Variable Speed Motor Application Option Schematic, Y-0264 ...................

14 15 16 18

Parts List .................................................................................................................... 19

Phase Angle Limit Control Option............................................................................... 25

Parts Mounted to the Enclosure ................................................................................. 25

B-0264 Variable Speed Motor Application Option ...................................................... 26

800-0245C-IB-00 04/01

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1.0 Introduction

The Beckwith Electric M-0245C is a solid-state device specifically designed to respond to changes in the phase angle between two input voltages. When the line voltage input is within the UPPER and LOWER VOLTAGE LIMIT dial settings, and the phase angle between the line voltage and the motor bus voltage is less than that set on the PHASE ANGLE LIMIT dial, the device will permit breaker closing. If the phase angle exceeds the control setting, the device will block closing within one cycle; i.e., if the limit is 30°, the unit will inhibit closing within one cycle of the time when the phase angle exceeds 30°. If the phase angle returns within the 30° limit, the unit will enable closing within one cycle.

Using advanced, state of the art semiconductors and circuits, the Beckwith Electric M-0245C achieves an overall stability and resolution unattainable with other techniques. Modern hybrid and monolithic semiconductors are used to gain temperature stability without critical compensation or trimming. Unique, patented circuitry allows precise phase measurement over a wide range of frequency, voltage and temperature; while operating within ±1% of the theoretical speed limit for phase measurement.

2.0 Theory of Operation

Refer to Figure 1, Block Diagram. Each input (Motor Bus, Line) is passed through a transformer and scaled down from 120 V ac to 6 V ac. If variable speed motor control is used on the motor bus, the variable speed motor application option should be specified, which places a dual channel low pass active filter after each input transformer. This eliminates false zero crossing triggering due to commutated bus voltage waveforms. The scaled down voltages are converted into dc voltages by the Ac to Dc Converters. These converters are active full-wave rectifiers and filters that eliminate the diode drop typical of conventional full-wave rectifiers, which are highly temperature-dependent. Full-wave rectification was chosen over half-wave rectification because the filter response time is much faster for a given ripple voltage. This is due to the fact that full-wave rectification contains no fundamental frequency components, only harmonics. The Upper and Lower Voltage Comparitors compare the output of the Ac to Dc Converter to a portion 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 sampled each half cycle of the highest frequency input. This sampled voltage is an accurate measure of the phase difference and is updated once every 8.3 ms. The sampled voltage varies from 0 to +10 V for a phase difference change of 0 to ±180°. The sampled phase voltage is compared to the extremely stable hybrid voltage reference. The compared signal is an indication of the phase difference with reference to the front panel PHASE ANGLE LIMIT setting. Rear terminal TB1-5 allows external monitoring of the phase difference sampled voltage, referenced as “Phase Angle Analog Output.”

Power is provided by the Power Supply, which supplies ±24 V dc, ±15 V dc and the precision 10 V reference used for comparison. The supply is designed to operate from 108 V ac to 132 V ac input and is electrically isolated from all other inputs and outputs. The Logic Network monitors all functions including power supply voltages. Upon receiving a logic “1” from the enable input and the appropriate logic conditions from the Phase Angle, Upper Voltage, and Lower Voltage Comparitors; the Logic Network outputs a breaker close signal to the Breaker Close Network. Terminals A and B are electrically shorted by the Breaker Close Network until one of the controlling logic conditions is false or logic “1.”

Motor Bus Undervoltage Monitor

The Motor Bus Undervoltage Detector will disable the relay if the voltage decays below 25% during a bus transfer sequence. This will ensure that the phase measurement circuitry does not misoperate during a low voltage condition.

Input Loss Protection

The M-0245C has been designed with an Input Loss Detector circuit to minimize the possibility of the output contacts closing due to sudden loss of the VT input sources. The M-0245C output contact is forced to the normally open state for any of the following conditions:

1. Sudden drop in the line V.T. voltage magnitude.

2. Sudden drop in the bus V.T. voltage magnitude.

3. Bus V.T. voltage less than 0.25%.

4. Rate of change of phase, as detected by the M-0245C circuitry, is greater than 2900°/sec. (8 Hz frequency difference).

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M-0245C Instruction Book

The possibility still remains, however, that under certain conditions (i.e., loose wires causing an intermittent contact) the internal circuitry may not be able to detect the loss, and the output contact could close when the unit is initiated. Therefore, as a safeguard, the “Close to Enable Sync Check” contact from TB120 to TB1-21 should be closed only during the time required for the transfer sequence to be completed.

3.0 Maintenance

Due to the extremely sophisticated nature of the circuitry in the M-0245C, field repair is not recommended. All units are fully calibrated at the factory prior to shipment; there is no need to recalibrate a unit prior to initial installation. Calibration is only required after a component is replaced.

In the event that a unit does not operate properly, it should be established that the problem is caused by malfunction of a Beckwith Electric unit and not caused by an external fault or wiring error. Once this is determined, the entire unit should be returned to Beckwith Electric. Pack the unit carefully (in the original carton if possible), assuring that there is adequate packing material to protect the contents.

■ NOTE: Any equipment returned for repair must

be sent with transportation charges prepaid. The equipment must remain the property of the user. The warranty is void if the value of the unit is invoiced to Beckwith Electric at the time of return or if the unit is returned with transportation charges collect.

If under warranty, units will be repaired rapidly and returned at no cost and with return transportation paid if the fault is found to be due to workmanship or failure of material. If a unit is under warranty and express shipment for return of the repaired unit is requested, shipping charges will be billed at the current rate. If the fault is due to abuse or misuse, or if the unit is out of warranty, a modest charge will be made. Repair can normally be expected to take two weeks, plus shipping time. If faster service is required, it should be requested at the time of return.

To help in analyzing the problem, a complete description of the malfunction and conditions leading to the failure should be included with the unit.

However, if you choose to repair the unit, it is necessary to be completely familiar with the circuitry involved, and have an adequate understanding of field effect devices. Be sure to carefully read the WARNING page at the beginning of this manual.

To gain access to the circuit board, remove the top and bottom cover of the unit. Components can then be easily tested or changed. It is suggested that first a visual inspection be made for any component that does not appear normal or appears to have overheated. Analysis of the circuit will then often lead to the cause of the failure and components that need to be replaced.

If no obvious problems exist, it is suggested that the TEST and CALIBRATION PROCEDURES be followed until a portion of a circuit is detected which does not perform 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.

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OUTPUT

BREAKER

TRANSIENT

1 V/18°

PHASE ANGLE

ANALOG OUTPUT

RATE OF

CHANGE OF

Ø > 2900°/sec

PHASE

HIGH-SPEED

<25%

VOLTAGE

DETECTOR

BUS UNDER-

1 V/20 V ac

BUS VOLTAGE

ANALOG OUTPUT

NETWORK

MEASURING

DETECTOR

INPUT LOSS

1 V/20 V ac

LINE VOLTAGE

ANALOG OUTPUT

1 V/20 V ac

ACTIVE

AC to DC

CONVERTER

BLOCK CLOSING

DETECTOR

INPUT LOSS

1 V/20 V ac

ACTIVE

AC to DC

CONVERTER

BREAKER

NETWORK

SOLID-STATE

OPTICAL

PHASE OK

PHASE ANGLE

COMPARATOR

POWER

ISOLATED

UPPER

VOLTAGE

COMPARATOR

SUPPLY

LOGIC

NETWORK

LOWER

VOLTAGE

COMPARATOR

SPEED

MOTOR

VARIABLE

ISOLATION

STEP-DOWN

TRANSFORMER

TRANSIENT

PROTECTION

BUS

INPUT

MOTOR

MAIN

POWER

SPEED

MOTOR

VARIABLE

ISOLATION

STEP-DOWN

TRANSFORMER

TRANSIENT

PROTECTION

LINE

INPUT

SUPPLY

TRANSIENT

PROTECTION

60 Hz

120 VAC

NETWORK

Figure 1 Block Diagram

–3–

POWER

SUPPLY

MONITOR

BUFFER

AMPLIFIER

INPUT

ENABLE

SYNC-CHECK

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M-0245C Instruction Book

4.0 Test Procedure

■■

■ NOTE: Values that change for the 50 Hz Operation

■■

option are shown in brackets.

Refer to Figure 2, External Connections, and Figure 6, Component Location, in conjunction with this section.

Equipment Required

1. A variable frequency source with phase angle control capable of providing 140 V rms with a minimum phase setting resolution of 1°.

2. A fixed 60 [50] Hz frequency source capable of providing 140 V rms with a minimum phase setting resolution of 1° rms.

3. Two (2) digital multimeters (DMMs) with ac and dc accuracy of ±0.2% of full scale; Hewlett-Packard model 3465A or equivalent.

4. A dual trace oscilloscope; Tektronics, Inc. model 465 or equivalent.

5. A digital phase angle meter with an accuracy of ±0.5°.

6. A synchroscope, if available.

7. An incandescent bulb and dc battery source.

■ NOTE: The two ac sources above should be

phase-locked to each other.

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, model MTCPL, 60 W, 120 V, 50/60 Hz with a grounded tip or equivalent equipment when soldering in new components.

4.2 Test Procedure

Upper Voltage Limit

1. Set the UPPER VOLTAGE LIMIT control to 125 V rms.

2. Apply the variable source at 120 V rms, 60 [50] Hz to TB1-1 and TB1-2. Note that TB1-1 is the Hot terminal. This source will later be referred to as the “Motor Bus voltage input.”

3. Apply the fixed source at 120 V rms, 60 [50] Hz to TB1-3 and TB1-4, and TB1-26 and TB1-27. Note that TB1-4 and TB1-27 are the Hot terminals. This source will later be referred to as the “Line voltage input.”

4. The UPPER VOLTAGE LIMIT-LINE LED should light.

5. Slowly raise the Line voltage input to approximately 125 V rms.

4.1 Component Replacement Procedure

1. The M-0245C printed circuit board has been coated with a moisture-resistant, conformal coating. If a component needs to be changed, carefully scrape away the coating surrounding the component using a small, sharp knife; being careful not to damage the foil on the printed circuit board.

2. Clip out the old component and discard.

▲ CAUTION: Do not attempt to melt the solder and push the new component through the hole, as the leads are likely to catch the edge of the foil and lift it off the board.

3. Remove the clipped wires using a solder wick or syringe. Be sure to leave the holes clear to facilitate insertion of the new component.

6. The UPPER VOLTAGE LIMIT-LINE LED

should go out as the Line voltage passes 125 V rms.

7. Slowly reduce the Line voltage input; the

UPPER VOLTAGE LIMIT-LINE LED should light as the voltage level drops below 125 V rms.

8. Return the Line voltage input to 120 V rms.

9. Repeat steps 3 through 7 with the UPPER VOLTAGE LIMIT dial set at 115 V rms, then at 135 V rms.

Lower Voltage Limit

1. Set the LOWER VOLTAGE LIMIT dial at 105 V rms.

2. Adjust the Line voltage input to approximately 106 V rms.

3. Adjust the Bus voltage input to 120 V rms.

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■ NOTE: To prevent the voltage level detection

circuit outputs from oscillating, there is approximately 0.5 V rms hysteresis between when the LEDs turn on and turn off, within a dial setting accuracy of K2% of full scale.

4. The LOWER VOLTAGE-LINE LED should

light.

5. Slowly reduce the Line voltage; the LOWER VOLTAGE LIMIT-LINE LED should go out as the Line voltage input drops below 105 V rms.

6. Slowly increase the Line voltage input; the LOWER VOLTAGE LIMIT-LINE LED should light as the voltage level passes 105 V rms.

7. Return the Line voltage input to 120 V rms.

8. Repeat steps 3 through 6 with the LOWER VOLTAGE LIMIT set at 95 V rms, then at 115 V rms.

Phase Angle Limit

■ NOTE: The following section is written for a 60°

full scale unit. Multiply accordingly for other scale options.

1. Adjust the Line voltage input to 120 V rms, 60 [50] Hz.

2. Adjust the Motor Bus voltage input to 120 V rms, 60 [50] Hz.

3. The phase angle meter reading and synchroscope should show a stable phase angle.

4. Set the PHASE ANGLE LIMIT dial at midscale (30°).

5. Adjust the phase angle between the Line and Motor Bus voltage inputs to 29.5°.

■ NOTE: To prevent the voltage level detection

circuit outputs from oscillating, there is approximately 0.5 V rms hysteresis between when the LEDs turn on and turn off, within a dial setting accuracy of K2% of full scale.

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 reading should be proportional to the Line voltage input ac level, which should be 0 to 7 V dc as the Line voltage input varies from 0 to 140 V rms. The accuracy should be K2% of full scale.

4. Move the DMM positive lead from TB1-28 to TB1-18. The negative lead remains on TB1-7.

5. The dc voltage reading should be 0 to 7 V dc as the Motor Bus voltage input varies from 0 to 140 V rms. The accuracy should be ±2% of full scale.

Phase Angle Analog Output

1. Connect the DMM positive lead to TB1-5.

2. Connect the DMM negative lead to TB1-7.

3. The dc voltage reading should be 0 to 10 V dc as the phase angle between the Line input and the Motor Bus input changes from 0° to 180°. The accuracy should be ±1% of full scale.

Voltage Status Output Contact

1. Place one ohmmeter across TB1-22 and TB1-23.

2. Set the UPPER VOLTAGE LIMIT dial at 125 V rms.

3. Set the LOWER VOLTAGE LIMIT dial at 105 V rms.

4. Adjust the Motor Bus voltage input level to 120 V rms, 60 [50] Hz.

5. Adjust the Line voltage input level to 120 V rms, 60 [50] Hz.

6. The PHASE ANGLE OK LED should light.

7. Slowly increase the phase angle between

the sources; the PHASE ANGLE OK LED should go out as the phase angle passes 30°.

8. Slowly reduce the phase angle; the

PHASE ANGLE OK LED should come on as the phase angle drops below 30°.

6. The VOLTAGE LIMIT LED should be lit.

7. The Voltage Status Contact from TB1-22 to TB1-23 should be closed.

8. Set the UPPER VOLTAGE LIMIT dial to 115 V rms.

9. The Voltage Status Contact from TB1-22 to TB1-23 should open when the UPPER VOLTAGE LIMIT-LINE LED is off.

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M-0245C Instruction Book

10 11 12

FUNCTION

Motor Bus Potential Input Hot

Motor Bus Potential Input Neutral

Line Potential Input Neutral

Line Potential Input Hot

Phase Angle Analog Output

Not used

0 Volts, Common for Analog Outputs. Should be Grounded. 8 9

13 14 15 16 17 18 19 20 21 22 23 24 25

TB1

26 27 28

Not Used

Motor Bus Voltage Analog

Output

0 Volts

Enable Sync-Check Input

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

Close to Enable

Sync-Check

TB2

Solid-State Breaker Close Circuit Output

Transient Suppressor Diode

Not Used

Figure 2 External Connections

–6–

Page 16

10. Return the UPPER VOLTAGE LIMIT dial

to 125 V rms.

11. The UPPER VOLTAGE LIMIT-LINE LED

should be on, and the Voltage Status Contact from TB1-22 to TB1-23 should be closed.

12. Move the LOWER VOLTAGE LIMIT dial

past 115 V rms to approximately 118 V rms.

13. The Voltage Status Contact from TB1-22

to TB1-23 should be open when the LOWER VOLTAGE LIMIT-LINE LED is off.

14. Return the LOWER VOLTAGE LIMIT dial

to 105 V rms.

15. The LOWER VOLTAGE LIMIT-LINE LED

should be on, and the Voltage Status Contact should be closed.

Phase Angle Status Output

1. Connect a 25 W incandescent bulb and a dc battery source across Phase Angle Status Contact TB1-24 and TB1-25 as shown in Figure 3, Test Setup.

2. Adjust the Line voltage input to 120 V rms, 60 [50] Hz.

3. Adjust the Motor Bus voltage input to 120 V rms, 60 [50] Hz at a 20° phase angle with respect to the Line voltage input.

4. Set the the UPPER VOLTAGE LIMIT dial to 125 V rms.

5. Set the LOWER VOLTAGE LIMIT dial to 105 V rms.

6. Set the PHASE ANGLE LIMIT dial to 30°.

7. Slowly increase the phase angle between the Line and Motor Bus voltage inputs.

8. The PHASE ANGLE OK LED and the light bulb should turn off as the phase angle passes 30°.

9. Slowly reduce the phase angle between the sources to below 30°; the light bulb and the LED should light as the phase angle passes 30°.

3. With the 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 TB1-21.

8. The output should drop out (the bulb should turn off) when the jumper is removed and should light when the jumper is reapplied.

Enable Response Time

1. Adjust the Line voltage input to 120 V rms, 60 [50] Hz.

2. Adjust the Motor Bus voltage input to 120 V rms at a 20° phase angle with respect to the Line input.

3. Place the Channel 1 scope probe on TB1-20 and the reference on TB1-21.

4. Place the Channel 2 scope probe on TB2-A and the reference on TB2-B.

5. Set the scope trigger mode on “Normal.”

6. Set the trigger slope level on (+).

7. Set the trigger source on Channel 1.

8. Set the horizontal sweep time at 2 ms/div.

9. Test the Enable Sync Check Input terminals TB1-20 and TB1-21 with a jumper to ensure proper trigger of the sweep. Adjust the stop level dial towards the (+) direction to observe better starting point of the sweep. Adjust the horizontal position, if necessary.

10. After proper triggering of the signal is observed when the unit is enabled, push the vertical mode to Channel 2 to monitor the signal on the Breaker Close Circuit Output.

Breaker Close Circuit

1. Connect an incandescent bulb and a dc battery source to the Breaker Close Circuit Output TB2-A and TB2-B as shown in Figure 3. Note that TB2-A is the more positive terminal.

2. Adjust the Line voltage and Motor Bus voltage inputs to 120 V rms, 60 [50] Hz.

11. Measure the delay time between when the Enable Sync Check Input closes and the Breaker Close Circuit Output TB2-A and TB2-B signal drops to minimum by counting the divisions on the horizontal screen.

12. The response time between when the Enable Sync Check Input closes and the Breaker Close Circuit Output closes should be approximately 5 ms K2 ms.

–7–

Page 17

M-0245C Instruction Book

Phase Angle OK to Output Contact Response Time

1. Set the PHASE ANGLE LIMIT dial to 20°.

2. Apply 120 V rms, 60 [50] Hz to the Line voltage input.

3. Apply 120 V rms, 60 [50] Hz to the Motor Bus voltage input at a 40° phase angle with respect to the Line voltage input.

4. Attach the Channel 1 scope probe to CR64 cathode, with reference to TB1-7.

5. Change the scope trigger to trigger on a decrease in phase angle.

6. Channel 2 should remain attached to TB2-A and TB2-B.

7. Jump the phase angle to 0°.

8. Measure the time delay between the change in phase angle and the Channel 2 signal going high.

9. The time delay should be 7 ms (minimum) to 24 ms (maximum).

10. Change the scope trigger to trigger on an increase in phase angle.

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 anode of CR19.

4. Place the Channel 2 probe on the end of R136 nearest the rear terminal block.

5. Trigger the scope on Channel 1. Set the horizontal sweep time at 5 ms/div.

6. Completely remove the Line voltage inputs.

7. As shown in Figure 4, the Channel 1 signal should immediately go high from –15 V to

+15 V, and Channel 2 should go low after 20 ms.

11. Jump the phase angle from 0° to 40°.

12. Measure the time delay between the phase angle increasing and the output contact opening.

13. The time delay should be 7 ms (minimum) to 24 ms (maximum).

4.3 Phase Angle Detection Circuit

Rate of Change of Phase Angle

1. Apply 120 V ac, 60 [50] Hz to the Line voltage input.

2. Attach the scope ground to the negative end of C78; attach the probe to the anode of CR8.

3. Begin to slowly adjust the Motor Bus frequency to approximately 120 V ac, 51 Hz.

4. The pulse rate should be approximately one pulse per cycle as the Motor Bus frequency approaches 51 [41] Hz K1 Hz.

5. Slowly increase the Motor Bus frequency. Pulses should stop as the frequency rises above approximately 51 [41] Hz.

Motor Bus Voltage Loss

Refer to Figure 5 for the following section.

1. Apply 120 V ac, 60 [50] Hz to the Motor Bus voltage input.

2. Apply 120 V ac, 60 [50] Hz to the Line voltage input.

3. Place the Channel 1 probe on Test Point 10 (TP10); attach Channel 2 probe to TP9.

4. Trigger the scope on Channel 1. Set the horizontal sweep time at 10 ms/div.

5. Completely remove the Motor Bus voltage input.

6. As shown in Figure 5, the Channel 1 signal should immediately go high from –15 V to +15 V, and Channel 2 should go high after approximately 50 ms.

Motor Bus Undervoltage Detector <25%

1. Reapply 120 V ac, 60 [50] Hz to the Motor Bus voltage input.

2. Remove the Channel 1 probe.

3. Slowly reduce the Motor Bus voltage.

4. The signal on Channel 2 should go high as the voltage level drops below 25%.

–8–

Page 18

M-0245

CONNECTIONS FOR BREAKER

CLOSE CIRCUIT TEST

25 W

INCANDESCENT

BULB

TB2-A

TB2-B

TB2-C

TB2-D

TB1-24

TB1-25

DC SOURCE

CONNECTIONS FOR PHASE ANGLE

STATUS CONTACT TEST

25 W

INCANDESCENT

BULB

DC SOURCE

TB1-26

Figure 3 Test Setup

–9–

Page 19

M-0245C Instruction Book

+15

-15

+15

-15

CHANNEL 1

20 MS

CHANNEL 2

Figure 4 Line Voltage Loss

+15

-15

50 MS

CHANNEL 1 CHANNEL 2

Figure 5 Motor Bus Voltage Loss

–10–

Page 20

5.0 Typical Voltages

Conditions

1. Motor Bus, Line and Power Supply are 120 V, 60 [50] Hz.

2. Measurements are made with a true rms type digital multimeter as described in the TEST PROCEDURE

section.

3. Readings are made with the negative lead of the multimeter tied to TB1-7, except where noted.

■ NOTE: The “bottom” of a component refers to the end nearest the front panel of the unit; the “top” refers to the

end nearest the rear terminal block.

FONOITACOL

TNIOPTSET

GNIDAER

82-1BTcdV40.6cd

81-1BT cdV40.6 cd

75RfodnEpoTcdV99.6cd

011RfodnEmottoB caV96.31 evaWerauqS

3RfodnEmottoBcaV76.31evaWerauqS

1RfodnEmottoB caV00.6 evaWeniS

701RfodnEmottoBcaV30.6evaWeniS

231RfodnEmottoB cdV00.6 cd

531RfopoTcdV74.4cd

)11PT(11tnioPtseT cdV00.01 cd

)8PT(8tnioPtseTcdV88.41-cd

)6PT(6tnioPtseT cdV78.41 cd

3RVfomottoBcdV29.22-cd

FOEPYT

MROFEVAW

1RVfopoT cdV56.02 cd

07RCfopoTcaV47.71evaWeniS

27RCfopoT cdV56.71 evaWeniS

■ NOTE: The following readings are made with the negative lead of the multimeter tied to TB2-B and with the

Enable jumper removed from TB1-20 to TB1-21.

FONOITACOL

TNIOPTSET

17CfodnEevitisoPcdV97.32cd

2RVfodnEpoT cdV59.31 cd

291RfodnEpoTcdV00.0cd

–11–

GNIDAER

FOEPYT

MROFEVAW

Page 21

M-0245C Instruction Book

6.0 Typical Resistances

Conditions

1. All rear terminals are open-circuited.

2. Measurements are made with a true rms digital multimeter as described in the Section 4.0, Test Procedure.

FONOITACOL

EVITAGEN

DAELMMD

NOITACOL

EVITISOPFO

ELACS GNIDAER

DAELMMD

1-1BT2-1BTK01K2.2

1-1BT 3-1BT K001 nepO

1-1BT7-1BTK001nepO

3-1BT 7-1BT K001 nepO

3-1BT4-1BTK01K2.2

7-1BT 91-1BT K1 0.0 Ω

7-1BT52-1BTK001nepO

7-1BT 3Tfo3#daeL K1 4 Ω

7-1BT3Tfo5#daeLK14Ω

42-1BT 52-1BT K001 nepO

62-1BT72-1BTK172 Ω

B-2BT A-2BT K001 nepO

B-2BTC-2BTK001nepO

C-2BT B-2BT K1 nepO

B-2BT7-2BTK001nepO

1Tfo4#daeL 1Tfo3#daeL K01 051 Ω

2Tfo4#daeL1Tfo3#daeLK01051 Ω

▲ CAUTION: Any attempt to measure resistances between points on the printed circuit board other than those shown above is likely to cause damage to the unit.

–12–

Page 22

7.0 Calibration

11. Place a clip lead between TB1-1 and TB1-3.

■ NOTE: The M-0245C has been fully calibrated at

the factory using highly sophisticated, computer-controlled test equipment. There is no need to recalibrate the unit before initial installation. Further calibration is only necessary if a component is changed during a repair procedure.

Access to the calibration points is only possible with the top cover removed; therefore, after field repair, do not install the unit in a rack or panel before following these procedures.

Refer to Figure 2, External Connections, and Figure 6, Component Location.

Phase Angle Calibration

1. Supply 120 V ac, 60 Hz to TB1-1 and TB1-2, noting that TB1-1 is the HOT terminal.

2. Place a clip lead between TB1-1 and TB1-4.

3. Place a second between TB1-2 and TB1-3.

4. Using a dual trace oscilloscope or phase meter attach one channel to E3 of the low pass filter board.

5. Attach the second channel to E4.

6. Attach the common lead of the scope or phase meter to E6.

7. Adjust R1 of the filter board (B-0246) for a measured phase angle of 0.00 degrees.

8. Adjust R196 until the voltmeter 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.

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 power input TB1-26 and TB1-27, noting TB1-27 is the HOT terminal.

16. Adjust R89 until the voltmeter reads +10.000 volts.

17. Remove the positive lead of the dc voltmeter and attach to Test Point 2 (TP2).

18. Adjust R6 until the voltmeter reads –10.014 volts.

19. Remove the positive lead of the dc voltmeter and attach to Test Point 3 (TP3).

20. Adjust R65 until the voltmeter reads –10.014 volts.

21. Remove the positive lead of the dc voltmeter and attach to R105 or the jumper between points J and K.

22. The voltmeter should read +10.00 volts K0.03 volts.

23. Adjust source supplying TB1-1 and TB1-2 to 60.000 Hz.

24. Remove clip leads to TB1-3 and TB1-4, supply 60 Hz at +90°, 120 V ac to TB1-3 and TB1-4, TB1-4 being HOT.

25. Record voltmeter reading.

26. Change phase angle of source to TB1-3 and TB1-4 to 90°.

27. The voltmeter reading should be about K.05 V of the recorded voltage.

–13–

Page 23

M-0245C Instruction Book

Figure 6 Component Location, B-0207

–14–

Page 24

Figure 7 Variable Speed Motor Application Component Location, B-0264

–15–

Page 25

M-0245C Instruction Book

–16–

Page 26

Figure 8 Schematic, X-0245C

–17–

Page 27

M-0245C Instruction Book

1 2 3 4 5

953

+15

C11

2.2

C12

2.2

2.0

+15

C1 .01

-15

R2 R3

953 953

LM208H

10K 1/2W

-15

1.5

4 3

2 1

R7 200

825

R5 R4

953 953

2.0

C7 .47

+15

C3 100 pf

C2 .01

LM208H

47K 1/2W

-15

1.5

C10 .47

C4 100 pf

Figure 9 Variable Speed Motor Application Schematic, Y-0264

–18–

Page 28

M-0245C Instruction Book

PARTS LIST

M-0245C High Speed Sync-Check Relay

This list includes all electrical and mechanical parts which could conceivably either require replacement or be lost. The COMPONENT DESIGNATION is the same as that appearing on schematics or referred to in Instruction Books.

The BECO NUMBER refers to an index maintained by the company. This lists the currently available device which may be substituted even though the device originally supplied is obsolete and no longer available. Parts marked by an asterisk* are not available from other sources. Either the original component or a current substitute will be carried in stock by Beckwith Electric.

Parts not marked with an asterisk are normally available from an electronics components house. Those parts or a current substitute will normally be available from Beckwith Electric stock.

In either case, when parts are ordered from Beckwith Electric, we will be responsible for supplying the current replacement in the 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 interpretation 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 final test. Procedures described in the TEST PROCEDURES Section must be followed in replacing these components.

All resistors are 1/2 W unless noted.

COMPONENT

DESIGNATION

C1,C51,C66,C89 000-00904 Capacitor, Ceramic Disc, 0.01 µF ±20%, 1 kV C2,C52,C91 000-00914 Capacitor, Ceramic Disc, 0.1 µF ±20%, 50 V C3,C28 010-00613 Capacitor, NPO Ceramic, 330 pF ±10%, 50 V C4,C29,C38 000-00810 Capacitor, Polyester, 0.0027 µF ±10%, 400 V C5,C8,C9,C11,C12,C22, 000-00917 Capacitor, Ceramic Disc, 0.01 µF ±20%, 50 V

C24,C30,C31,C34,C37, C40,C41,C44,C68–C70, C73,C80,C84,C92,C94– C99,C101,C103–C107

C6,C32,C39 010-00802 Capacitor, Polysulfone, 0.1 µF ±1%, 50 V

BECO

NUMBER

450-00065* Printed Circuit Board, P-0592

DESCRIPTION

C7,C35,C42,C45,C47 000-00903 Capacitor, Ceramic Disc, 100 pF ±10%, 1 kV C10,C36,C43 010-00432 Capacitor, Polystyrene, 0.01 µF ±10%, 63 V

–19–

Page 29

M-0245C Instruction Book

COMPONENT

DESIGNATION

C13,C57,C65,C72 000-00811 Capacitor, Polyester, 0.1 µF ±10%, 100 V C14–C21 Not Used C23,C90,C100,C102 000-00909 Capacitor, Ceramic Disc, 0.1 µF +80/-20%, 25 V C25,C26,C53,C54 000-00829 Capacitor, Polyester, 0.22 µF ±10%, 100 V C27,C55 000-00813 Capacitor, Polyester, 4.7 µF ±10%, 100 V C33 000-00902 Capacitor, Ceramic Disc, 680 pF ±10%, 1 kV C46,C63,C64 000-00808 Capacitor, Polyester, 0.01 µF ±10%, 400 V C48–C50 Not Used C56 000-00825 Capacitor, Polyester, 0.15 µF ±10%, 100 V C58–C62 Not Used C67,C79 000-00637 Capacitor, Electrolytic, 3500 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

BECO

NUMBER

DESCRIPTION

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 µF ±20%, 3000 V CR1–CR8,CR13,CR17– 400-00224 Diode, 1N4148

CR19,CR21–CR27, CR38–CR45,CR49– CR52,CR64,CR66,CR67, CR77–CR79, CR81

CR9–CR12,CR14–CR16 Not Used CR20,CR48,CR63, 400-00722 Diode, Light Emitting, Hewlett–Packard 5082–4658

CR69,CR84 CR28–CR32 Not Used CR33,CR34,CR46, 400-00211 Diode, 1N5061

CR47,CR53,CR65, CR75,CR76

CR35–CR37,CR54– Not Used CR62,CR68

CR70–CR73,CR82 400-00213 Diode, 1N5626

–20–

Page 30

COMPONENT

DESIGNATION

CR74,CR80 Not Used CR83 400-00229 Diode, 1N1190 CR89 See PARTS MOUNTED TO THE ENCLOSURE

F1,F2 420-00850 Fuse, 1 A, 125 V, Littelfuse 275–001 F3 Not Used F4 420-00849 Fuse, 2 A, 125 V, Littelfuse 275–002

K1–K3 Not Used K4,K5 430-00151 Relay, 24 V dc, SPDT, American Zettler

Q1,Q3,Q4 400-00305 Transistor, PNP, 2N2907A Q2,Q5 Not Used Q6–Q8 400-00300 Transistor, NPN, 2N1711 Q9–Q11 400-00422 Transistor, Power FET, Silconix VN45JA

BECO

NUMBER

DESCRIPTION

AZ4UP–E–1C–24D

R8,R10,R11,R13,R18, 200-00103 Resistor, Carbon Film, 10 K ±5% R67,R69,R71,R75, ■ NOTE: If Variable Speed Motor Application Option is

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 Resistor, Metal Film, 80.6 K ±1%, 1/4 W, RN60E

NOTE: If Variable Speed Motor Application Option is installed, see that option’s parts list for R1 and R7

values. R9,R68,R76 200-00121 Resistor, Carbon Film, 120 Ω ±5% R12,R62,R78 180-00303 Resistor, Carbon Comp, 30 K ±5%, 1/4 W R14,R26,R77,R130,R138, 180-00104 Resistor, Carbon Comp, 100 K ±5%, 1/4 W

R168,R171,R202,R203, R209,R220

R15,R63,R80 200-00394 Resistor, Carbon Film, 390 K ±5%

–21–

Page 31

M-0245C Instruction Book

COMPONENT

DESIGNATION

R16,R64,R81 180-00203 Resistor, Carbon Film, 20 K ±5%, 1/4 W R19–R22 340-00015 Resistor, Metal Film, 51.1 K ±0.1%, 1/4 W, RN60E5112B R23,R45,R111 340-00580 Resistor, Metal Film, 66.5 K ±1%, 1/4 W, RN60C R24,R46,R112 390-00551 Resistor, Metal Film, 33.2 K ±1%, 1/8 W, RN55C R25,R49,R114,R125 390-00601 Resistor, Metal Film, 100 K ±1%, 1/8 W, RN60C R27 390-00569 Resistor, Metal Film, 51.1 K ±1%, 1/8 W, RN55C R28 390-00455 Resistor, Metal Film, 3.65 K ±1%, 1/8 W, RN55C R29,R30,R84–R86 340-00002 Resistor, Metal Film, 20K ±0.1%, 1/4 W, RN60E R31,R87 340-00001 Resistor, Metal Film, 10 K ±0.1%, 1/4 W, RN60E R32 360-00068 Potentiometer, 20 K, Bourns 3009P–1–203 R33–R44 Not Used R47,R113 390-00573 Resistor, Metal Film, 56.2 K ±1%, 1/8 W, RN55C R48,R115 390-00636 Resistor, Metal Film, 232 K ±1%, 1/4 W, RN55C R50,R57,R105,R116 340-00501 Resistor, Metal Film, 10 K ±1%, 1/4 W, RN60C

BECO

NUMBER

DESCRIPTION

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 330-00473 Resistor, Metal Film, 5.62 K ±1%, 1/4 W, RN60E R59,R118 330-00609 Resistor, Metal Film, 121 K ±1%, 1/4 W R74 340-00011 Resistor, Metal Film, 174 K ±0.1%, 1/4 W, RN60E R88 330-00528 Resistor, Metal Film, 19.1 K ±1%, 1/4 W, RN60E R89 360-00069 Potentiometer, 2 K, Bourns 3009P–1–202 R90–R104,R106 Not Used R117,R197 390-00593 Resistor, Metal Film, 90.9 K ±1%, 1/8 W, RN55C R119,R129 200-00204 Resistor, Carbon Film, 200 K ±5% R120,R128,R134,R182, 200-00102 Resistor, Carbon Film, 1 K ±5%

R190–R192,R198 R122,R141,R167 200-00153 Resistor, Carbon Film, 15 K ±5% R123 200-00105 Resistor, Carbon Film, 1 M ±5% R124 200-00823 Resistor, Carbon Film, 82 K ±5%

–22–

Page 32

COMPONENT

DESIGNATION

R132 330-00513 Resistor, Metal Film, 13.3 K ±1%, 1/4 W, RN60E R135 330-00518 Resistor, Metal Film, 15 K ±1%, 1/4 W, RN60E R137,R159,R170 180-00103 Resistor, Carbon Comp, 10 K ±5%, 1/4 W R139 180-00154 Resistor, Carbon Comp, 150 K ±5%, 1/4 W R140 390-00605 Resistor, Metal Film, 110 K ±1%, 1/8 W R143–R158,R160 Not Used R162 Select for 30°, 60°, 120°, or 180° phase angle limit - Refer

R164 200-00563 Resistor, Carbon Film, 56 K ±5% R165 330-00301 Resistor, Metal Film, 100 Ω ±1%, 1/4 W, RN60E R172 180-00392 Resistor, Carbon Film, 3.9 K ±5%, 1/4 W R173 180-00102 Resistor, Carbon Comp 1 K ±5%, 1/4 W R174,R175 370-00006 Resistor, Wirewound, 3.3 Ω ±5%, 2 W R176 200-00100 Resistor, Carbon Film, 10 Ω ±5%

BECO

NUMBER

DESCRIPTION

to OPTIONAL COMPONENTS

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 340-00013 Resistor, Carbon Comp. 16 K ±5% R194 350-00052 Resistor, Wirewound, 20 Ω ±5%, 5 W R196,R200 360-00141 Potentiometer, 20 K, ±10%, Bourns 3266W-1-203 R199,R201 180-00564 Resistor, Carbon Comp, 560 K ±5%, 1/4 W R205,R207,R209 180-00562 Resistor, Carbon Comp, 5.6 K ±5%, 1/4 W R208 200-00104 Resistor, Carbon Film, 100 K ±5% R222,R223 390-00339 Resistor, Metal Film, 249K, K1%, 1/8W R210–R219,R221 Not Used RV1,RV3,RV6,RV8, 400-00724 Varistor, 250 V, 20 J, G.E. V250LA20

RV13,RV14,RV20,RV21

–23–

Page 33

M-0245C Instruction Book

COMPONENT

DESIGNATION

RV2,RV7,RV11,RV16 400-00718 Varistor, 1800 V dc, 80 J, Panasonic ERZ–C–14DK182 RV4,RV5,RV9,RV10 400-00709 Varistor, 250 V, 2 J, G.E. V250LA2 RV12,RV17 400-00734 Varistor, 1000 V dc, 40 J, Panasonic ERZ–C–14DK102 RV15 400-00727 Varistor, 250 V, 40 J, G.E. V250LA40B

T1,T2 410-00031* Transformer Set, B-0210, U-0086 T3 410-00030* Transformer, U-0085 T4 410-00017* Transformer, U-0029

TB1 420-00052 Terminal Strip, 28–Position, R.D.I. 6PCR-28-001 TB2 See PARTS MOUNTED TO THE ENCLOSURE TB3 420-00067 Terminal Strip, 11–Position, Curtis GBPC-11

U1,U30 400-00655 Op Amp, National LF257H U2,U28,U42 400-00638 Hex Inverter, Motorola MC14049BAL U3 400-00625 Quad 2–Input NOR–Gate, Motorola MC14001BAL

BECO

NUMBER

DESCRIPTION

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–U27,U33–U35 Not Used U36 400-00683 8–Input NAND–Gate, Motorola MC14068BAL U37 Not Used U38,U39 400-00716 Photon Coupled Isolator, G.E. 4N35 U40 400-00644 Voltage Reference, National LH0070-1H U41 560-00010 Voltage Regulator, Raytheon RC4194TK

VR1,VR3 400-00057 Diode, Zener, 33 V ±5%, 5 W, 1N5364B VR2 400-00030 Diode, Zener, 15 V ±10%, 400 mW, 1N965B VR4 400-00056 Diode, Zener, 9.1 V ±5%, 400 mW, 1N757A VR5 400-00074 Transient Suppressor, General Semiconductor Ind.

15KP280A VR6 400-00017 Diode, Zener, 3.6 V ±5%, 400 mW, 1N747A

–24–

Page 34

COMPONENT

DESIGNATION

BECO

NUMBER

DESCRIPTION

PHASE ANGLE LIMIT CONTROL OPTION

R162 370-00020 Jumper = 180

190-00439 Resistor, Metal Film, 2.49 K ±1%, 1/8 W = 120 190-00502 Resistor, Metal Film, 10.2 K ±1%, 1/8 W = 60 190-00540 Resistor, Metal Film, 25.5 K ±1%, 1/8 W = 30

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

–25–

Page 35

M-0245C Instruction Book

COMPONENT

DESIGNATION

BECO

NUMBER

DESCRIPTION

B-0264 VARIABLE SPEED MOTOR APPLICATION

C1,C2 000-00904 Capacitor, 0.01 µF, ±20%, 1KV, Centralab DD-1032 C3,C4 000-00903 Capacitor, 100 pf, ±20%, 1KV, Centralab DD-101 C5,C6 010-00549 Capacitor, 1.5 µF, 100 V, Polyester Seacor MMKK 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, Carbon Film, 10KΩ, ±5% R9 200-00473 Resistor, Carbon Film, 47KΩ, ±5%

U1,U2 560-00011 OP AMP, LM108AJ-8

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Legal Information

Patent

The units described in this manual are covered by U.S. Patents 4,218,625 and 4,256,972.

Buyer shall hold harmless and indemnify the Seller, its directors, officers, agents, and employees from any and all costs and expense, damage or loss, resulting from any alleged infringementof United States Letters Patent or rights accruing thereform or trademarks, whether federal, state, or common law, arising from the Seller’s compliance with Buyer’s designs, specifications, or instructions.

Warranty

Seller hereby warrants that the goods which are the subject matter of this contract will be manufactured in a good workmanlike manner and all materials used herein will be new and reasonably suitable for the equipment. Seller warrants that if, during a period of two years from date of shipment of the equipment, the equipment rendered shall be found by the Buyer to be faulty or shall fail to peform in accordance with Seller’s specifications of the product, Seller shall at his expense correct the same, provided, however, that Buyers shall ship the equipment prepaid to Seller’s facility. The Seller’s responsibility hereunder shall be limited to replacement value of the equipment furnished under this contract.

Seller makes no warranties expressed or implied other than those set out above. Seller specifically excludes the implied warranties of merchantibility and fitness for a particular purpose. There are no warranties which extend beyond the description contained herein. In no event shall Seller be liable for consequential, exemplary, or punitive damages of whatever nature.

Any equipment returned for repair must be sent with transportation charges prepaid. The equipment must remain the property of the Buyer. The aforementioned warranties are void if the value of the unit is invoiced to the Seller at the time of return.

Indemnification

The Seller shall not be liable for any property damages whatsoever or for any loss or damage arising out of, connected with, or resulting from this contract, or from the performance or breach thereof, or from all services covered by or furnished 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 Buyer for such damages, regardless of whether said claim or damages is based on contract, warranty, tort including negligence, or otherwise.

Under no circumstances shall the Seller be liable for any personal injury whatsoever.

It is agreed that when the equipment furnished hereunder are to be used or performed in connection with any nuclear installation, facility, or activity, Seller shall have no liability for any nuclear damage, personal injury, property damage, or nuclear contamination to any property located at or near the site of the nuclear facility. Buyer agrees to indemnify and hold harmless the Seller against any and all liability associated therewith whatsoever whether based on contract, tort, or otherwise. Nuclear installation or facility means any nuclear reactor and includes the site on which any of the foregoing is located, all operations conducted on such site, and all premises used for such operations.

Notice:

Any illustrations and descriptions by Beckwith Electric Co., Inc. are for the sole purpose of identification.

The drawings and/or specifications enclosed herein are the proprietary property of Beckwith Electric Co., Inc., and are issued in strict confidence; therefore, shall not be used as a basis of reproduction of the apparatus described therein without written permission of Beckwith Electric Co., Inc.

No illustration or description contained herein shall be construed as an express warranty of affirmation, promise, description, or sample, and any and all such express warranties are specifically excluded nor shall such illustration or description imply a warranty that the product is merchantable or fit for a particular purpose. There shall be no warranties which extend beyond those contained in the Beckwith Electric Co., Inc. terms of sale.

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BECKWITH ELECTRIC CO., INC.

6190 - 118th Avenue North • Largo, Florida 33773-3724 U.S.A.

PHONE (727) 544-2326 • FAX (727) 546-0121

E-MAIL [email protected]

WEB PAGE www.beckwithelectric.com