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(732) 938-2000 / 800-LAB-VOLT, FAX: (732) 774-8573, E-MAIL: [email protected]

(418) 849-1000 / 800-LAB-VOLT, FAX: (418) 849-1666, E-MAIL: [email protected]: http://www.labvolt.com

AElectric Power / Controls SYNCHRO-SERVO TRAINING

SYSTEM, MODEL 8060

GENERAL DESCRIPTIONThe Lab-Volt Model 8060 Synchro-Servo TrainingSystem is a portable, self-contained, educationalsystem. Its modular design allows the student to observeand analyze the fundamental components of the servosystem and associated electronic circuits. The Mod-el 8060 allows students to build synchro-servo systemsof their own by interconnecting components. This abilityincreases their working knowledge of components andcircuitry, and reinforces their comprehension of blockdiagrams.

The Model 8060 provides a basic understanding ofoperational theory, as well as the ability to analyze, trou-

bleshoot, and demonstrate open- and closed-loopsynchro-servo systems. System interconnections, operat-ing signal states, trouble symptoms, and zeroing errorsare easily conveyed and identified through the use of frontpanel interconnection jacks and stacking leads. The frontpanels are clearly silk-screened with standard electrical

and servo-mechanism symbols, representing each mod-ule's function.

The Synchro-Servo Training System is primarily ananalog positional control device. It operates on low volt-ages from the power supply, which is built into the systemen closure. When the control modules are inserted intothe enclosure, they are automatically energized (providedthat the main power switch is on). Solid state amplifiermodules provide signal amplification, phase shift, andpower gain typically required in practical systems.

The system enclosure, with built-in back-panel con-nectors, accepts control modules and synchro-servomodules. Both have fault-insertion capabilities that intro-duce common system or component malfunctions. Thesynchro-servo modules can be mechanically coupled toa load by a timing belt. Auxiliary coupling can also beaccomplished via a circular section belt.

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SYNCHRO-SERVO TRAINING SYSTEM

MODEL 8060

Model 8846 Power Supply

The Power Supply, Model 8846, is an integral part of thesystem enclosure. It features both short circuit andovervoltage protection.

Model 9036 Potentiometers

The Potentiometers module, Model 9036, is designed tofacilitate the injection of system control signals. It containstwo independent 1-kpotentiometers, which have built-incurrent-limiting protection. Each potentiometer wiper isswitch-controlled so that a step input can be manuallyinjected.

Model 9037 Error Detectors

The Error Detectors module, Model 9037, enables theservomechanism systems to have either two feedbackloops or two command inputs. It consists of a pair ofindependent summing amplifiers, each of which has twoinverting inputs and one non-inverting input.

Model 9038 Modulator / Demodulator

The Modulator / Demodulator, Model 9038, is designedto interface AC and DC systems. The modulator anddemodulator portions are entirely independent of eachother, and the output of each section is directly propor-tional to the signal applied. The modulator section is usedfor DC to AC conversion while the demodulator sectionis used for converting AC to DC.

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Model 9039 Phase Shifter / Power Amplifier

The Phase Shifter / Power Amplifier, Model 9039, con-sists of two completely independent sections: the phaseshifter portion and the power amplifier.

The phase shifter provides the second phase required

to create torque in the two-phase AC motor.The power amplifier will operate in either the AC or

DC mode, thus providing power for both types of loads.An LED indicator lights up when the power amplifierbecomes saturated.

Model 9041 Signal Amplifiers

The Signal Amplifiers, Model 9041, is used to control thesignal level of each feedback loop. It includes two variablegain amplifiers which are completely independent of eachother.

Model 9047 Capacitor

The Capacitor module, Model 9047, is used to increasethe torque output of the Synchro Receiver (TR),Model 9316. The torque output of the Receiver decreaseswhen operated at power supply frequencies below its

nominal frequency of 400 Hz. The module consists of a175-F capacitor, to be connected in series with the rotorwinding of the Synchro Receiver (TR), and whichoptimizes torque output at frequencies of 50 and 60 Hz.

Model 9313 Synchro Transmitter (TX)

The Synchro Transmitter (TX), Model 9313, is used toprovide positioning control of the Model 9316 SynchroReceiver (TR) module. It can also be coupled with theSynchro Differential Transmitter (TDX), Model 9315, thuspermitting differential positioning control of the receiver.The transmitter is equipped with an adjustable zeroingfeature.

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MODEL 8060

Model 9314 Synchro Control Transmitter (CX)

The Synchro Control Transmitter (CX), Model 9314,provides positioning control. The control transmitter isequipped with an adjustable zeroing feature.

Model 9315 Synchro Differential Transmitter (TDX)

The Synchro Differential Transmitter (TDX), Model 9315,is used to perform the algebraic subtraction of two posi-tioning control signals. This module has an adjustablezeroing feature.

Model 9316 Synchro Receiver (TR)

The Synchro Receiver (TR), Model 9316, is used to out-put the positioning control signals. The module has anadjustable zeroing feature.

Model 9318 DC Servo Motor / DC Tacho-Generator

The DC Servo Motor / DC Tacho-Generator, Model 9318,supplies mechanical power to the load. A DC tachometergenerates a signal proportional to the speed of the motor.

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Model 9319 AC Servo Motor / AsynchronousTacho-Generator

The AC Servo Motor / Asynchronous Tacho-Generator,Model 9319, supplies mechanical power to the load. AnAC tachometer generates a signal proportional to the

speed of the two-phase motor.

Model 9320 Inertia/Friction Load

The Inertia/Friction Load, Model 9320, is designed toprovide varying loads, common to real-world conditions.Friction is obtained by means of an eddy current brake,while variable inertia is achieved through the use of a fly-

wheel.Accurate positioning of the load is accomplished with

a precision potentiometer or a control transformer,which has an adjustable zeroing feature. A shaft encodergives the relative position of the load, and a springloaded belt tensioner assures constant tension for repeti-tive loading.

ADDITIONAL AND OPTIONAL EQUIPMENT

The following modules are not covered by Lab-Volt regular courseware but may, at the instructor's discretion, be usedto enhance the laboratory program.

Model 9040 Tachometer Buffers

The Tachometer Buffers, Model 9040, provides imped-ance matching between the tachometer output and therest of the circuit. The 9040 filters unwanted noise super-imposed on the tachometer signal. A front panel outputjack provides the speed signal for the Speed Sensor /Tachometer (Model 8931, optional).

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MODEL 8060

LIST OF EQUIPMENT FOR SERVO/SYNCHRO, MODEL 8060-1

QTY DESCRIPTION MODEL NUMBER

1 Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8846

1 Connection Leads and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8944

1 Potentiometers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9036

1 Error Detectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90371 Modulator / Demodulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9038

1 Phase Shifter / Power Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9039

1 Signal Amplifiers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9041

1 Capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9047

1 Synchro Transmitter (TX) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9313

1 Synchro Control Transmitter (CX) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9314

1 Synchro Differential Transmitter (TDX) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9315

1 Synchro Receiver (TR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9316

1 DC Servo Motor / DC Tacho-Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9318

1 AC Servo Motor / Asynchronous Tacho-Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9319

1 Inertia/Friction Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9320

1 Student Manual and Instructor Guide included (see Courseware section)

ADDITIONAL EQUIPMENT REQUIRED TO PERFORM EXPERIMENTS

QTY DESCRIPTION MODEL NUMBER

1 Dual Trace Oscilloscope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 797

1 Analog Multimeter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8946-1

1 Function Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9033

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SPECIFICATIONS

Model 8846 Power Supply 120 V 60 Hz 220 V 50 Hz 240 V 50 Hz

Power Requirement Current 2 A 1 A

AC/DC Supply 15 V DC 1 A

20 V AC 3 A

Reference Supply 10 V DC 0.1 A

10 V AC 0.1 A

TTL DC Supply 5 V DC 1 A

Physical Characteristics Dimensions (H x W x D) 297 X 415 X 280 mm (11.7 X 16.4 X 11 in)

Net Weight 17.7 kg (39 lb)

Model 8944 Connection Leads and Accessories

Current Capacity 7.5 A maximum per lead

White Leads 13; 150 mm (6 in)

Yellow Leads 10; 300 mm (12 in)

Red Leads 10; 450 mm (18 in)

Timing Belt 6.3 mm ( in)

Circular Section Belt 3.18 mm x 10 cm (0.125 x 4 in)

Model 9036 Potentiometers

Physical Characteristics Dimensions (H x W x D) 143 x 63 x 240 mm (5.6 x 2.5 x 9.5 in)

Net Weight 0.60 kg (1.3 lb)

Model 9037 Error Detectors

Input Voltage 0 to 12 V

Output Voltage 0 to 12 V

Voltage Gain (for each input) 1

Input Power 15 V DC 6 mA



Model 9038 Modulator / Demodulator

Modulator AC Reference Input Voltage 0 to 10 V peak

Input Voltage 0 to 18 V peak

Output Voltage 8 V AC maximumInput Impedance 100 k

Demodulator AC Reference Input Voltage 0 to 10 V peak

Input Voltage 0 to 8 V AC

Output Voltage 0 to 8 V DC

Input Impedance 100 k


Physical Characteristics Dimensions ( H x W x D) 143 x 63 x 240 mm (5.6 x 2.5 x 9.5 in)


Model 9039 Phase Shifter / Power Amplifier

Phase Shifter Input Voltage 0 to 8 V AC

Output Voltage 0 to 8 V AC

Phase Shift +90E

Voltage Gain 1


Power Amplifier Input Voltage 0 to 12 V peak

Output Voltage 0 to 12 V peak

Voltage Gain (AC) 0.5 to 100

Voltage Gain (DC) 1 to 200


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MODEL 8060

SPECIFICATIONS (cont'd)

Model 9039 Phase Shifter / Power Amplifier (cont'd)

Input Power Rear Connector 15 V DC 30 mA

Front Panel 15 V DC 1 A


Net Weight 1 kg (2.2 lb)

Model 9040 Tachometer Buffers

DC Buffer Input Voltage 0 to 12 V DC

Output Voltage 5 V DC/250 r/min of knob

Voltage Gain 0.6


AC Buffer Input Voltage 0 to 8 V AC

Output Voltage 5 V AC/250 r/min of knob

Voltage Gain 0.55


Tach Output Output Voltage 5 V DC/250 r/min of knob




Model 9041 Signal Amplifiers

Amplifier Number 1 Input Voltage 0 to 15 V peak


Voltage Gain 0.4 to 2.0


Amplifier Number 2 Input Voltage 0 to 12 V peak


Voltage Gain 0.2 to 1




Net Weight 0.7 kg (1.5 lb)Model 9047 Capacitor

Capacitor Value 175 F



Model 9313 Synchro Transmitter (TX)

Size 23

Rotor Voltage 20 V 60 Hz

Rotor Current 820 mA

Stator Voltage 15.6 V AC

Rotor Resistance 3

Stator Resistance (between 2 phases) 4

Physical Characteristics Dimensions (H x W x D) 192 x 127 x 177 mm (7.6 x 5 x 7 in)


Model 9314 Synchro Control Transmitter (CX)

Size 11


Rotor Current 56 mA

Stator Voltage 12.8 V AC

Rotor Resistance 154

Stator Resistance (between 2 phases) 141

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1 Measured with V12 = 12 V dc

Model 9314 Synchro Control Transmitter (CX) (cont'd)



Model 9315 Synchro Differential Transmitter (TDX)

Size 23

Stator Voltage 14.5 V AC 60 Hz

Stator Current 550 mA

Rotor Voltage 14.5 V AC 60 Hz

Rotor Resistance 5.5

Stator Resistance 50



Model 9316 Synchro Receiver (TR)

Size 23


Rotor Current 1.1 A

Stator Voltage 15.6 V ACRotor Resistance 3.9

Stator Resistance (between 2 phases) 5.8

Rotor inertia (including knob) 230.9 g.cm2



Model 9318 DC Servo Motor / DC Tacho-Generator

DC Motor Input Voltage 12 V DC

Stall Current1 830 mA DC

No Load Speed 180 r/min measured at knob

Stall torque1 4000 g.cm measured at knob

Rotor moment of inertia 21 g.cm2

DC Generator Output Voltage 3.50 V DC/100 r/min of knob

Rotor Moment of Inertia 8.5 g.cm2

Gear Assembly (moment of inertia) Knob 75.9 g.cm2

Large Gear 318 g.cm2

Small Gear 0.9 g. cm2

Total Inertia Referred to Knob 15720 g.cm2



Model 9319 AC Servo Motor / Asynchronous Tacho-Generator

AC Motor Reference Phase Voltage 20 V ac

Control Phase Voltage 0 to 10 V AC

Reference Phase Stall Current 0.35 A AC

Control Phase Stall Current 10 V AC 0.65 A

Reference Phase Resistance 20

Control Phase Resistance 6

No Load Speed 200 r/min

Small Torque 2300 g.cm measured at knob

AC Generator Input Phase Voltage 20 V AC

Output Phase Voltage 3.65 V AC/100 r/min of knob

Input Phase Resistance 10

Output Phase Resistance 6.2

Rotor (moment of inertia) 5.4 g. cm2

Gear Assembly (moment of inertia) Knob 75.9 g.cm2

Large Gear 318 g.cm2

Small Gear 1.6 g.cm2

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MODEL 8060


Model 9319 AC Servo Motor / Asynchronous Tacho-Generator (cont'd)

Total Inertia Referred to Knob 7300 g.cm2



Model 9320 Inertia/Friction Load

Control Potentiometer 1 k

Control Transformer (CT) Size 11

Stator Voltage 13 V AC

Stator Current 12 mA

Rotor Voltage 5.7 V

Knob and Circular Scale Scale Diameter 76.2 mm (3 in)

Scale Graduation 0E to 360E (2E increments)

Moment of Inertia 75.9 g.cm2

Inertia Wheel Diameter 750 mm (29.5 in)

Thickness 6.4 mm (25 in)

Moment of Inertia 1561 g.cm2

Eddy Current Brake Two permanent magnets apply current through shaft encoder diskto develop variable friction

Shaft Encoder 2 outputs: A and B TTL compatible

Phase Shift 90E between A and B

A leading B clockwise rotation of knob

Duty Cycle 50%

Pulse Rate 100 pulses/revolution of knob

Moment of inertia 80.6 g.cm2

Gear Assembly (moments of inertia) Large Gear 318 g.cm2

Small Gear 1.8 g.m2

Total Inertia Referred to Knob (without inertia wheel) 2805 g.cm2

Total Inertia Referred to Knob (including inertia wheel) 41,830 g.cm2

Physical Characteristics Dimensions (H x W x D) 192 x 127 x 177 mm (7.5 x 5 x 6.97 in)


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2 Various versions are available. Refer to Ordering Number section.

COURSEWARE

ORDERING NUMBERS2

Student Manuals

Servo/Synchro . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26183-00

The Resolver (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27244-00

Instructor Guide

Servo/Synchro . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26183-10

TOPIC COVERAGE

C Servomechanisms

Power Supplies and Potentiometers

Power Amplifiers and Signal Amplifiers

Open-Loop Control of a DC Motor

AC Motor and Phase Shifter

DC and AC Tachometers

Open-Loop Speed Control of an AC Motor

System Disturbances

Response of an Open-Loop Control System

Error Detector

Principles of Closed-Loop Control

Closed-Loop Speed Control of a DC Motor

Modulator

Closed-Loop Speed Control of an AC Motor

Position Control of a DC Motor

Overshoot and Viscous Damping of a Position

Servo

Position Control of an AC Motor

Instability of Closed-Loop Control Systems

Instability of a Position Control System

C Synchros

Introduction to Synchros

Adjusting the Zero Position of Synchros

Control Transmitter and Control Transformer

Synchro Position Control System

The Demodulator and Synchro Control of a DCMotor

Torque Transmitter and Receiver

Differential Control Transmitters and TorqueTransmitters

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MODEL 8060

3 N/A = Not available

Lab-Volt reserves the right to make product improvements at any time and without notice and is not responsible for typographical errors. Lab-Volt recognizes all productnames used herein as trademarks or registered trademarks of their respective holders. Copyright 2008, Lab-Volt Systems, Inc.

TA14673-00 Rev. C3

ORDERING NUMBERS

120 V 60 Hz 220 V 50 Hz 240 V 50 Hz

ENGLISH FRENCH SPANISH ENGLISH FRENCH SPANISH ENGLISH

797-20 797-20 797-20 797-25 797-25 797-25 797-258060-10 8060-11 8060-12 8060-15 8060-16 8060-17 8060-1A

8846-00 8846-01 8846-02 8846-05 8846-06 8846-07 8846-0A8944-00 8944-00 8944-00 8944-00 8944-00 8944-00 8944-008946-10 8946-10 8946-10 8946-10 8946-10 8946-10 8946-109033-00 9033-01 9033-02 9033-00 9033-01 9033-02 9033-009036-00 9036-01 9036-02 9036-00 9036-01 9036-02 9036-009037-00 9037-01 9037-02 9037-00 9037-01 9037-02 9037-009038-00 9038-01 9038-02 9038-00 9038-01 9038-02 9038-009039-00 9039-01 9039-02 9039-00 9039-01 9039-02 9039-009040-00 9040-01 9040-02 9040-00 9040-01 9040-02 9040-009041-00 9041-01 9041-02 9041-00 9041-01 9041-02 9041-009047-00 9047-01 9047-02 9047-00 9047-01 9047-02 9047-009313-00 9313-01 9313-02 9313-00 9313-01 9313-02 9313-009314-00 9314-01 9314-02 9314-00 9314-01 9314-02 9314-009315-00 9315-01 9315-02 9315-00 9315-01 9315-02 9315-009316-00 9316-01 9316-02 9316-00 9316-01 9316-02 9316-00

9318-00 9318-01 9318-02 9318-00 9318-01 9318-02 9318-009319-00 9319-01 9319-02 9319-00 9319-01 9319-02 9319-009320-00 9320-01 9320-02 9320-00 9320-01 9320-02 9320-00

Table 1. Equipment Ordering Numbers

120 V 60 Hz 220 V 50 Hz 240 V 50 Hz

ENGLISH FRENCH SPANISH ENGLISH FRENCH SPANISH ENGLISH

26183-00 26183-01 26183-02 26183-00 26183-01 26183-02 26183-0026183-10 N/A3 26183-12 26183-10 N/A 26183-12 26183-1027244-00 N/A N/A 27244-00 N/A N/A 27244-00

Table 2. Courseware Ordering Numbers

dsa 8060

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