ML13323A258

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Fba Adjustment & Acceptance Test Procedure
ML13323A258
Person / Time
Site: San Onofre  Southern California Edison icon.png
Issue date: 10/05/1981
From:
KINEMETRICS, INC.
To:
Shared Package
ML13323A259 List:
References
PROC-811005, NUDOCS 8204050303
Download: ML13323A258 (16)
v • d • e


Text

FBA ADJUSTMENT AND ACCEPTANCE TEST PROCEDURE t

ico schedule is affected by this document approval, Bechtel most be otfdpiotofbiaon orsc clim eg aied Approval of documents involving calculation, analysis or test report is only an acceptance Of the method used by the supplier. Supplier retains full responsibility for design.

Approval of this document does not relieve the supplier from full responsility for at o e

order requirements including, but not limited to, adequacy andutability o material and/or equipment represented thereon for th int e

u D ODUM N TusM D T S

IVE B

A PD SU CT AS NOU D

REC NOMA O

DISTRIUTO EOUIRED CSRO I9TYI 38t~

APPROVE EXCEPT AS N4OTD ORIG.

REV.

ISSUE A

DATE 9/74 Ii0/5/81 A

AAPPROVED R

8204 050303 820401 PDR ADOCK~ 05000361 P

R.

PDR

1. Be sure the FBA's are square on their mounting plate.

Level the mounting plate; and center the capacitor plates.

Be sure the #38 wires form a nice free loop.

  1. 38 Approx.

inch

2. Measure and record the coil resistance, Rc.

Connect decade boxes for Ro, Rf, and Rh.

Nominal values for these are 604 ohm, 26.7K, an 12K, respectively.

Adjust calib pot for maximum resistance (about 10K ohm).

3. Make sure that the oscillator carrier voltages, Q and o are each 5.0 volts rms (for FBA-11) or 6.0 volts rms (for FBA-1) and that the difference between them is less than 50 mv.
4. Preliminary Check. Connect a dual phase function generator to CALIB input.

Set generator amplitude to 5V p-p. Connect FBA output to scope; set scope gain for convenient amplitude, A. Starting at 2 Hz, sweep frequency to 50 Hz.

There must be no increase in output voltage.

As 50 Hz. is approached, the output should begin to decrease until at 50 Hz, it should be about 70% of A. If there is an increase in output or 70% of A cannot be obtained, check damping adjust procedure.

5. Natural Frequency Adjust. Set-the master function generator for 50 Hz. sinusoidal, and also set slave generators to 1800 and connect output to horizontal input of an oscilloscope.

Function Generator 50 Hz 1800 Master Slave H

V FA output SCOPE Set the test switch to natural frequency.

Adjust the slave output amplitude in such a way that V & H inputs are compatible.

Select R so that the Lissajout pattern closes to a staight ?ine.

6. Damping Adjust.

Set the function generator, 2 Hz.

square wave, 5 V p-p.

Select Rh to get.70 +/-:

critical damping.

5 Hz Square Wave B

A A

A= 1division on scope

.046 or B

0 rB 22 divisions on scope

7. Sensitivity Adjustment
a. Check that the capacitor plate is centered when ppwer is off.
b. Set the output to 0.000 +/-.010 volts by adjusting the capacitor plate when tilt fixture is at 0O angle.
c. Rotate fixture 90 0 clockwise and then 900 counter clockwise. Select Rf so that the outputs are +2.50,+/-.025 volts and -2.50 +/-.025 volts.

Symmetry should be within 25 mv.

If the output does not meet c. above, slightly loosen 2 screws which hold the capacitor plate and move the capacitor plate gently and slightly and repeat a., b., and c.

8. Repeat steps 5, 6,*and 7 until proper natural frequency, damping,2and sensitivity are obtained.
9. Undamped Decay Check
a. Adjust 10K ohm calib pot so output voltage is 1.25

+/-.l volts with 12 VDC applied to calib.

b. Switch test box from Calib to Nat Freq and observe the FBA output on a scope.

It should decay down to zero in less then 1 second and more than 0.3 seconds.

If the output increases, the FBA is unstable and must be rejected.

10.

Noise Check. Set the tilt fixture to 00 angle and the oscilloscope.to 50 mV range. The FBA output noise should be less than 20 mV. Check that there is no oscillation nor high spike noises.

If there are, reject the FBA.

11.

With the desired values for RO, Rf, and Rh determined, select the closest 1% resistors and record these values on the data card. Use RN55C resistors and have these resistors installed.

12.

Recording of Final Data (Use attached calibration data card) 12.1 In the cross-axis orientation, rotate the FBA thru 3600, record output and 900 position letter on back of card.

A B

C Note:

For Horizontal accelerometers, if any value exceeds.075V, reposition accelerometer to minimize cross-axis, and record a new set of data.

Average the data for the four positions.

Algebraically subtract the average from the value for each position.

Select the maximum difference, divide it by 2.50, and record on front of card.

Spec:

.03 G/G 12.2 Record output at OG, + F.S. +F.S.,

OG,.-

F.S. and -F.S.

Note:

+F.S. is defined as mass moving toward pole piece. Thus, the output should be -

for

+ F.S., and + for -

F.S.

Note:

For-the vertical FBA, record + F.S. by tilting to and-F.S. by tilting to Spec:

0 1.025 volts; F.S. 2.50 +/-.05 volts.

12.3 Record natural frequency

+5.0 Hz Spec:

50 Hz, -5.0 Hz 12.4 Record overshoot data on back of card. Convert to per unit.critical damping by means of Table I, and record.

Spec:

h=0.70 +0.00 critical

-0.10 12.5 Measure and record the output noise.. Read the noise on a scope, measuring peak-to-peak the noise which is not exceeded 90% of.the time.

Spec:

5 mV.

Table I amping Overshoot h

O.S.

Ratio

.60

.095 10.55/1

.61

.089 11.23/1

.62

.0835 11.917/1

.63

.078' 12.79/1

.64

.073

13. 69 /1

.65

.068 14.69/1

.66

.063 15.80/1

.67

.059 17.04/1

.68

.054 18.42/1

.69

.050 19.98/1

.70

.046

21. 74/1

.71

.042 23.75/1

.72

.038

26. 03/1

.73

.035 28.66/1

.74

.0315 31.70/1

.75

.028 35.24/1

.76

.025 39.40/1

.77

.022 44.31/1

.78

.020 50.19/1

.79

.017 57.28/1

.80

.015 65.94/1

ACCELEROMETER CALIBRATION DATA UseA in Serial Accel Sera_

R R f Ro Rh Ou'tput:

out: @ OG,

@ +1F/2 F. S.,

+F. S.

OG,

@ -1/2 F.S.,

-F.S.

Full Scale (F. S.) Range G

Natural Freq.

__HZ Damping per unit critical Noise Cross Axis Data Taken By Date

-.H-&: ~ACEF TMNCt 1E:T T

E UEL'UUNE I. Wiren check.

VENDOR PWTu'M A. All boar ds removed, batt.er ies disconn ete kt ORD

1. Masure rist~anc FILE a) [,att common to J2 Pin R (O; Ohms) b.)

[datt common to J4, J, J6 and J7, Pins 1, 3 and 8 (OOhms) c) Eatt common to COM Jack (O Ohms) d)

+ LBatt to J2 Pin R (0 Ohsrt) e)

+ Ett to J3, J4, J5 and J6, Pin 7 (O Ohms) f)

Batt to J2 Pin N (0 ohms) 9)-

Batt to J4 Pin 9 (O Ohms) h) + Batt to -Batt

(>

10 MOhms) i0 + Batt to Batt common (> 10 MOhns) j)

Batt t Batt c

  • onfmmnC (C> 10. MChns) 2..

Battery voltage.meter check.

r Connect nega tive battery and turn the battery

.vol tage switch to the '-"

poSiti C.

The battery vsltage mwter should read about 12V.

Turn the battery voltage iwit ch to th

"+

position.

The battery voltage eter shoul d read OV.

Connect positive battery and turn battery voltage switch to thej "+"

position.

Thie battery voiltage meter should now read about 12V.

3d c23 S/3 &B REVISION Isjue DATE APPROVAL Uc FPO WA1 450B

-9

- 9 4

d"'TrAT15h "STA"P tIr-A

SH-3 A

'AiE TEST FL-tEDURE

3. Voltage regulator check.

Install voltaige r eulaitor..

Measur e voltages a)

COM Jack to J4 Pin 4 (-6V +/-

.1V) b)

COM Jack to J4 Pino 6 (+6V +/-

0. 1V)

.)

COM Jack to J4.Pin 7 (+12V +/-

1.OV)

4. Corparator arrpi fi er chetk.

Intal 1 Coparatr amp if i er boards.

A.

Ad-justment range check.

1. Adjust R16 fully clockwise on L, V aind T boards mr-easure voltage from COM JaCk to TPI.

a)

L board volthqe (min 2.50V).

b)

V board voltage (min 2. 50V).

c)

T board voltage (min

2. 50V).

B. Comparator c-seek.

1.

Measure volt-age from COM Jack to TPI, ad just R16 to riake vol tag e read 2. 500V + or

.91V on L, V anid T

boar ds.

2.

Coinnect voltage calibrator from COM Jack to L Jack.

a)

Set vol tage c al i brat.or to pos i Ii ve

2. 400V.

Ohmmeter should read 0 Ohms.

b) Set

.voltage calibrator to posi tive 2.L600V.

Ohmmeter should read opett circuit.

) Set voltage calibrator to positive

2. 400V.

Ohmmeter should read O Ohmi, after 1I0 +/-

1 :ees (adjust R19 orn L board if requi red for 10 sees).

Record hold-on time.

d) Set voltage cali'orator to n1eqative

2. 400V.

Ohmmeter should read 0 Ohms.

e)

Set voltage calibrator to negative

2. 600V.

Ohmmeter should reAd opeo circuit.

f)

Set,voltage calibrator to noegative

2. 400V.

Ohmmeter should read O. Ohms after about 10 seCs.

3.

Move voltagie calibrator lead from L Jack to V Jack.

Move Ohmmeter.lwads to J3 pins C anid D.

Repeat steps 2. a to 2. f for V board.

2

3 ACL.EF '[ AblCE TLEST F rUL OU ELIE

4. Move voltage calibrator lead from V Jack to T Jack.

Move Oihrmeter lads to J3 piins E drnd F.

Rep-at steps 2. a t.o 2. f for T board.

C. Reldy check.

1. Connect voltage calibrator from COM Jack to L Jack.
2.

Sett. voltdge calibrator to 0. OOOV.

Z3.

Measure resistanices oi J*3 a) Pin A to B (-should be O 0his) b) Pin C to D (should be O Ohms) c) Pi E to E (shoul d b e 0 Ohms) d) Pin I to J (should be 0 Ohms)

4. Set voltage calibrator to 2. 600V aid repcat step 3

(3a and 3d should read > 10 MOhms).

3.

Move vol tage cal i brator lead from L Jack to V Jack hind repeat steps 2 and 3.

6.

Set voltage calibrdtor to 2.600V-arid repe-at step 3

(3b and 3d should read > 10 Mohms).

7.

Move voltage cali brator lead from V Jack to T Jack and repeat steps. 2 and 3.

8.

Set voltage calibrator to 2. 600V and ripeai step 3

(3c and 3d should read > 10 Mohms).

5. Overall check.

A.

Set point check.

1. For specified acceleration set points, calculate set point voltages:

Esp-A(2. 50V/g) where Esp-set point vol tage A-acceleration set point Adjiust set-points of L, V and T boards tov required values.

2. Coinect Ohmeter to J3 Pins I and J
3. Connect Voltage calibrator fromrro COM Jack to L Jack.
4. Set Voltage calibratcor to pos6itive

. (OCV.

a) Increase output of voltage calibrator until uni t triggers(Ohmmeter reads 10 Mohms).

Record voltdye.

b) Set Vol tage cal i brator to negative 0. OOOV and wait for uni t to detrigger.

Repeat step a).

5.

Move voltage calibrator lead from L Jack to V Jack and repeat steps 4. a) and 4. b).

6. Move voltage calibrator lead from V Jack to T Jack and repeat steps 4. a) and 4. b).
7.

Compare voltages recorded to voltages calculated (tolerance +/-

2%).

B.

System check.

1. Connect FEA-13 accelerometer to SSH-3.
2. Connect Ohmmeter to J3 Pins A and B.
3. Push S2 (L Test). Ohmmeter should chan;ge from (I Ohms to "- 10 MOhmis.
4. Connect Ohmmeter to J3 pins C and D.
5.

Push S3 (V test), Ohmmeter should cIhiangng frcim 0 Obss to > 10 MOhms.

6. Connect Ohmmeter to J3 pins E and F.
7. Push S4 (T Test),

Ohmmeter should change, from 0 Oheis to > 10 Mohms.

IMPORTANT If the price or schedule is affected by this document approval, Bechtel must be notified prior to fabrication or such claims are waived.

Approval of documents involving calculation, analysis or test report is only an acceptance of the method used by the supplier. Supplier retains full responsibility for design.

Approval of this document does not relieve the supplier from full responsibility for contract or purchase order requirements including, but not limited to, adequacy and suitability of materials and/or equipment resented thereon for the in ded functi ECEIVE DOCUMENT STATUS DT APPROVED - MANUFACTURER MAY PROCEED 3

APPROVE EXCEPT AS NOTED. MAKE CHANGES AND RESUBMIT. MANUFACTURER MAY PROCEED AS APPROVED.

4 NOT APPROVED.CORRFT AND RESUBMIT 7

INFORMATIONONLY

[]DISTRIBUTION REQUIRED essespoonis/Ts 4

S~H-3 ACCEPTANLE TEST DATA DATA TAKEN BY.

SSH-3 S/N FBA-13 S/N

1. WIRING CHECKS.

A.

MEASURE RESISTANCES.

a)

(O Ohms) f)

((3 Ohms) b)

(0 Ohms) g)

(0 Ohms) c)

(0 Ohm) h)

I(> 10 MOhms) d)

(0 Ohms) i)

(> 10 MOIIms)

(0 Ohms) j)

10 MJhns )

2-BATTERY VOLTAGE METER CHECK.

A.

(O0)

3.

VOLTAGE REGULATOR CHECK.

a)

(-6V +1-

0. IV) b)

(+6V

+1-

0. IV c)

(+12V +/-

1. OV)
4.

COMPARATOR CHECK.

A.

ADJUSTMENT RANGE CHECK.

1. a)

(min 2..5V)

1. b)

(mirt

2. 5V)

)

(nmin 2. 5V)

B. COMPARATOR CHECK.

2. a).

(0 Ohms)

2. d).

(0 Ohms)

2. b)

(>10 MOhams)

2. e)-

(> 10 MOhms)

2. c)

(10+/-

1 sees)

3. a).

(0 Ohms)

3. d)

(0 Ohms)

3. b)

(>1(0 M'hms )

3. e) 0 10 M Ohms )
3. c)

(10

+/-

1 sees)

I of 2

S,:.H-3 ACL.E.F'ThNCE TEST Wf.A E; S H-E. Ill B.

COMPARATOR CHECK(econt. ).

FEA-13 S/N

4.

) -

(0 Ohms)

4. d)

( 0 Ohms)

-4.

b)

(>

10 MOhms.)

4. f )

10'MOhm11s) 4. c.....

(.1 0 +/-

1 sees )

C. RELAY CHECK

3. a)

(O Ohms)

3. b) 1(

Ohms)

3. c )............

(0 Ohms)

3.

d)

(0 01hms)

4. i)

(>10 MOhms)

4. b)

(.1 MOhms)

4.

()

(0 Ohms)

4. d) 010 Mohms)
5. a).

(0 Ohms)

5. b)-

(C Ohms)

5.

).

(0 Ohms)

5. dJ)

(0 Ohns)

6. a)

(0 Ohms)

6. b)

(>10 Ohms)

6. c)

(0 Ohms)

6. d

-)

010 Ohms)

7. a)..

(0 Ohms)

7. b)

(0 Ohms)

7. e)

(0 Ohms)

7. d)

(O Ohms) 8 a)-

(0 Ohms)

8. b)

(0 Ohms)

8. c)

(>10 Ohms)

8. d) 010 Ohms)
4. Overall check.

A.

Set point c hec'k.

Measured Values Specified set points L Axis

4. a)...

V b))

V V

g V Axis

5. a)...

V b).........

V V

TAxis

6. d)-

V b)-

V V

g B.

System check.

3.

(>10 MOhmrs)

5.

(>10 MOhnms)

7.

10 MoIms)

APPROVED EY.

DATE 2 of 2

SSH-3 HI-POT AND EUNN-IN T1STIND Test performed by S8H-3 S/N FE:A-13 S/N

1.

HI-POT TESTING A. Vse Associated Research Model 4045.

I.

Setup tester for A. C. testing.

2.

Connect SSH-3 and FBA-13 and inrure that relays are cI osed.

3.

Connect tester common lead to chassis ground.

4.

Connect tester positive lead to J3 Pins A and 13.

5.

Adjust voltagee set dial fully counter clockwise, turn on tester and slowly i ncrease voltage to 250VAC.

6.

Record Pass/Fail (F/),

return voltage set dial to OV, and turn off tster.

7.

Move Testor posi tive lead from Pins A and B to Pins C and D arid repeat. steps 5 and 6.

8.

Move Testor positive lead from Pius C and D to Pins E and F and repeat steps 5 and 6.

9.

Move Testor positive lead from Pi ns E and F to Pi us I arid J and repeat. steps 5 and 6.

10. Move Testor negative lead from Chasis.ground to J3 Pins A and B.

move Tester positive lead from Pit-s I and J to Pins C and D and repeat steps 5, 6,

8 and

9.
11.

Move Tester negative lead from Pits A and B to Pins C and D, move tester positive lead from Pins I and J to pins E and F and repeat steps 5, 6 and 9.

12. Move Tester negative lead from Pins A and LI to Pins E and F and repeat steps 5 and 6.

J

_ J3 - 5 V-6 ORG REVISION ISSUE DATE APPROVAL 1 of 3

S:S.H-3 HI-FCOT ANU BURN-1N 'E:.TINUi 0..

g SS:H-3 S/N.

FBA-13 S/N_

1. HI-POT TESTING (cont.).

E. *HI-POT TEST LIATA.

CONNECTION PINS PINS PINS PINS A AND B C AND D E AND F I AND J CHASSIS GROUND PINS XXXXXXXXX A AND B XXXXXXXXX PINS XXXXXXXXX XXXXXXXXX C AND D XXXXXXXXX XXXXXXXXX PINS XXXXXXXXX XXXXXXXXX XXXXXXXXX E AND F XXXXXXXXX XXXXXXXXX XXXXXXXXX

2.

BURN-IN TEST.

A.

Connect SSH-3 and FBA-1:3.

Connect A C.

power to SSH-3.

Record tim.re aid dat e.

Record initiass.

8. After 24 +/-

8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> measure and record input levels at which L, V. and T axes trip, and record time and date.

TIME AND DATE.

INITIALS AXIS

+

L V

V V

V V

T V

V IMPORTANT If the rice or schedule Is affected by this document approval, Bechtel must be not fIed prior to fabrication or such claims are waived.

Approval of documents involving calculation, analysis or test report is only en acceptance of the method used by the supplier. Supplier retains full responsibility for design.

Approval of this document does not relieve the supplier from full responsibility for contract or purchase order requirements including, but not limited to, adequacy and suitability of materials and/or equipment represented thereon for the inten ad function.

DATE DOC STATUS RY I C APPROVED - MANUFACTURER MAY PROCEED DT DQ 3

APPROVED EXCEPT AS NOTED. MAKE CHANGES AND RESUBMIT. MANUFACTURER MAY PROCEED AS APPROVED.

4 NOT APPROVED - CORRf&T AND RE8UBMIT 7

INFORMATION ONLY

,,DISTRIBUTION REQUIRED 2 of 3

SSH-3 HI-POT AND EURN-IN TEiNU SSH-3 S/N_

FBA-13 S/N C. After 50 hrs.

minimum rep-.at step B and discconnect.

all

  • connectors.

TIME AND DATE INITIALS AXIS

+

L V

v V

V V

T V

V

4.

FAILED COMPONENTS LILRING BURN-IN (any failed componeit will require burn-in t-o be re-started).

List board designat-ion and component number.

3 of 3

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