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GLENTEK Inc. 208 Standard Street, El Segundo, California 90245, U.S.A. (310) 322-3026

SMA7215 MANUAL

CLAMP U/D

RESET U/D

RESET H/L

N/A

LIM & CLAMP H/L

VEL MODE

CUR MODE

INTEGRATOR

LIMIT U/D

S1

COMMON

+15/+5

HS/ECB

LS/ECB

RUN

TACH

SIG GAIN

SIGNAL

TACH GAIN

OVER TEMP

DIFF SIG GAIN

OVER VOLT

COMP

TEST POINTS

J2

LEDS

COMP

POTS

TACH

BAL

SIG GAIN

DIFF GAIN

I LIMIT

FLDBK

IR COMP

15
14

16

11
10

1

13
12

J1

LIMIT

COMMON

SIGNAL IN

DIFF SIG

DIFF SIG

+

TACH

MTR CUR

LIMIT

+

RESET

LS/ECB

CLAMP

FAULT

COMMON

OVERVOLT

HS/ECB

OVERTEMP

8

4

2

3

6
5

7

9

CAUTION

HIGH VOLTAGE

BRUSHTYPE AMPLIFIER

SMA7215-1

TB1

2

1

RESET SWITCH

LOOP GAIN POT

BUS RET

+

B

4

3

MOTOR

MOTOR

+

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Содержание SMA7215

Страница 1: ...208 Standard Street El Segundo California 90245 U S A 310 322 3026 OPERATION SERVICE MANUAL for Torque Switch Series Model SMA7215 Brush Type Amplifier System MANUAL 7015 2040 REVISION A DATE 15APR98...

Страница 2: ...1 3 2 Signal Inputs 8 1 3 3 Digital Inputs 8 1 3 4 System 8 1 3 5 Outputs 8 1 3 6 Mechanical 8 Chapter Two Theory of Operation 2 1 Introduction 9 2 2 Driving DC Servo Motors 9 2 3 Servo Loops 10 2 4...

Страница 3: ...Connector 19 4 3 4 Amplifier Connections 18 19 4 3 4 1 The Power Connections 18 4 3 4 2 The Signal Connections 18 19 4 3 5 Test Point 19 Chapter Five Configuration 5 1 Introduction 20 5 2 Logic Input...

Страница 4: ...lt 27 7 2 3 High Speed Electronic Circuit Breaker HS ECB Fault 27 7 2 4 Low Speed Electronic Circuit Breaker LS ECB Fault 27 7 2 5 Over Temp Fault 27 7 2 6 Over Voltage Fault 28 7 2 7 Resetting A Faul...

Страница 5: ...ier model SMA7215 There is also an informative theory of operation chapter We suggest that you take the time to read this manual from cover to cover before attempting to work with these amplifiers for...

Страница 6: ...has several protection circuits to protect the amplifier motor and operator from almost any kind of fault Several LED s show what fault has occurred and a separate output can be used to signal other...

Страница 7: ...ter a fault High Speed Electronic Instantly shuts down the amplifier in the event of a short Circuit Breaker across outputs and or ground fault condition HS ECB i e amplifier exceeds 80A for 10microse...

Страница 8: ...40A peak 1 3 2 Signal Inputs 1 3 3 Digital Inputs Limit Clamp and Reset 50V max Terminated by 10 000 Fault as input 40V 5V max Terminated by 10 000 Typical for all digital inputs Digital inputs have h...

Страница 9: ...ear amplifiers are simple accurate and effective However they are very inefficient and they generate a lot of heat Linear amplifiers are used when low electrical noise high bandwidths 2KHz or higher a...

Страница 10: ...g amplifier compares the command current velocity error with the actual current in the motor and produces an error voltage proportional to the difference between the actual and commanded current Final...

Страница 11: ...ings As the rotor turns the brushes switch the current flow to the windings which are optimally oriented with respect to the magnetic field which in turn produces maximum torque In a brushless motor t...

Страница 12: ...tion of Output Switching Transistors The output transistors for all intents and purposes operate in only two states They are analogous to ON OFF switches When an output transistor is OFF there is no c...

Страница 13: ...owing from A through C Figure 2 5 Transistor switching waveform at zero current Figure 2 6A Transistor switching waveform when current flows from A through C If the input to the current loop had been...

Страница 14: ...e current command signal but opposite in polarity The type of loop described above is referred to as a servo loop because the current servos about a commanded value We are surrounded in our everyday l...

Страница 15: ...our customer will be able to create the correct model number of the product that you need as quick and as accurately as possible Differential or Single ended Signal Inputs 0 Single Default 1 Different...

Страница 16: ...me sort of shielding on the motor wires is necessary to meet FCC RFI EMI guidelines and to protect other equipment from the effects of RFI EMI We recommend that shielded wire be used or the wires shou...

Страница 17: ...options one can choose to use for the power connector The specifications of all the mentioned connectors are listed as follows AUGAT RDI 6 Series Tri Barrier Terminal Blocks AUGAT P N 6PCR 04 Default...

Страница 18: ...Housing molex P N 22 01 3167 red nylon housing 16 positions with polarizing rib Crimp Terminals molex Crimp Terminals molex P N 08 55 0102 15 microinch select gold plated brass 4 3 4 Amplifier Connect...

Страница 19: ...an inhibit input LS ECB J1 13 Goes high if the Low Speed Electronic Circuit Breaker turns on HS ECB J1 14 Goes high if the High Speed Electronic Circuit Breaker turns on OVERVOLT J1 15 Goes high if th...

Страница 20: ...active high or active low signals and pulled up or pulled down termination type A B C and D All logic inputs have a selectable 0 to 5VDC or 0 to 15VDC range Type A Requires grounding of input to disa...

Страница 21: ...n BEMF mode Required Equipment Oscilloscope voltmeter battery box The battery box serves as a step input voltage command applying and removing a flashlight battery can also be used for this function G...

Страница 22: ...h will yield the desired waveform The optimum setting will occur when Tach Gain is as CW as possible and Compensation is as CCW as possible However the servo loop may become unstable the motor oscilla...

Страница 23: ...RV1 Loop Gain LOOP GAIN Used to shut off uncalibrated amplifiers When the loop gain is fully CCW no current is delivered to the motor RV6 Differential Gain DIFF SIG GAIN Sets the input voltage to cur...

Страница 24: ...single ended input set battery box for a known DC voltage Apply input signal pulses and adjust the Signal Gain RV7 pot to obtain the desired current gain of the amplifier 5 If the motor is rotating in...

Страница 25: ...ation on future units and repair on this unit Although not a substitute for the calibration procedure it will at least get you in the ballpark Remove the power and allow all capacitors to discharge be...

Страница 26: ...CATE AND CORRECT THE CAUSE OF THE FAULT BEFORE REPEATED RECYCLING OF POWER TO THE AMPLIFIER TO PREVENT POSSIBLE DAMAGE 7 2 1 Table of Fault LED Conditions Input or Fault Condition RUN LED HS ECB LED L...

Страница 27: ...to ground 7 2 4 Low Speed Electronic Circuit Breaker LS ECB Fault When the RMS output of the amplifier exceeds 13A for standard or 18A for high power for 5 seconds the Run LED will turn off the LS ECB...

Страница 28: ...o apparent fault the drawings in appendix will enable a skilled technician to trouble shoot an amplifier to even lower levels 7 4 Factory Repair Should it become necessary to return an amplifier to Gl...

Страница 29: ...pair or replacement of defective parts Any product or part manufactured by others and merely installed by us such as an electric motor etc is specifically not warranted by us and it is agreed that suc...

Страница 30: ...GLENTEK Inc 208 Standard Street El Segundo California 90245 U S A 310 322 3026 30 Appendix Amplifier Drawings...

Страница 31: ...31 GLENTEK Inc 208 Standard Street El Segundo California 90245 U S A 310 322 3026 SMA7215 MANUAL...

Страница 32: ...GLENTEK Inc 208 Standard Street El Segundo California 90245 U S A 310 322 3026 32 APPENDIX AMPLIFIER DRAWINGS...

Страница 33: ...CH SIG GAIN SIGNAL TACH GAIN OVER TEMP DIFF SIG GAIN OVER VOLT COMP TEST POINTS J2 LEDS COMP POTS TACH BAL SIG GAIN DIFF GAIN I LIMIT FLDBK IR COMP 15 14 16 11 10 1 13 12 J1 LIMIT COMMON SIGNAL IN DIF...

Страница 34: ...Brushless Servo Amplifiers Linear Brushless servo amplifiers to 2 25KW PWM Pulse width modulated Brushless servo amplifiers to 65KW Permanent Magnet DC Brush Type Servo Motors Continuous Torques to 3...

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