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K1 Power Supply Manufacturing Checkout Procedure
1.0 Introduction
The Korad K1 Power Supply is designed for use with the K1 and K1000 series
laser systems. The function of the supply is to charge the energy storage
capacitor bank to a selected voltage. For a complete description of the supply,
see the "K1 Power Supply Instruction Manual".
The purpose of this procedure is not to describe the K1 power supply; but
instead, provide an easy and safe method of testing and calibrating the supply.
For this purpose, a special test fixture has been provided and will be the only
equipment necessary to test the supply.
2.0 Equipment Needed:
1) K1 test fixture
2) 5 kilojoule head with lamp and heat exchanger
3.0 Hook-up:
(a) Connect the power supply to the test fixture as shown in the image below
4.0 To test the interlock:
Remove 15A fuse. Set the controls on the K1 test panel and the power supply
as indicated and verify the following conditions:
(a) |
Power Supply Controls |
Power Switch |
Kilovold |
Fire |
Charge |
Dump |
Meter |
ON |
1.00 |
OFF |
OFF |
OFF |
0 |
|
K1 Test Panel Controls |
S1(pos) |
S2 |
Ground |
Sync |
Meter |
|
OFF |
OFF |
ON |
OFF |
0 |
|
|
(b) |
Power Supply Controls |
Power Switch |
Kilovolt |
Fire |
Charge |
Dump |
Meter |
ON |
1.00 |
OFF |
OFF |
ON |
0 |
|
K1 Test Panel Controls |
S1(pos) |
S2 |
Ground |
Sync. |
Meter |
|
1 |
ON |
ON |
OFF |
34V 10% |
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5.0 To test fire signal
Set the controls on the K1 test panel and the power supply as indicated and
verify the following conditions:
(a) |
Power Supply Controls |
Power Switch |
Kilovold |
Fire |
Charge |
Dump |
Meter |
ON |
0 |
ON |
OFF |
OFF |
0 |
|
K1 Test Panel Controls |
S1(pos) |
S2 |
Ground |
Sync |
Meter |
|
2 |
ON |
ON |
OFF |
34V 10% |
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6.0 To test trigger voltage
Set the controls on teh K1 test panel and the power supply as indicated and
verify the following conditions:
(a) |
Power Supply Controls |
Power Switch |
Kilovold |
Fire |
Charge |
Dump |
Meter |
ON |
0 |
ON |
OFF |
OFF |
0 |
|
K1 Test Panel Controls |
S1(pos) |
S2 |
Ground |
Sync |
Meter |
|
3 |
ON |
ON |
OFF |
50V 10% |
|
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(b) |
Push trigger button and verify voltage drops
and return to original valve. Repeat this step
three or four times.
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7.0 To test charge and dump modes
Set control on the K1 test panel and the power supply
as indicated and verify the following conditions:
(a) |
Power Supply Controls |
Power Switch |
Kilovold |
Fire |
Charge |
Dump |
Meter |
ON |
1.00 |
OFF |
OFF |
ON |
0 |
|
(b) |
K1 Test Panel Controls |
S1(pos) |
S2 |
Ground |
Sync |
Meter |
|
OFF |
ON |
ON |
OFF |
0 |
|
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(c) |
Leave test panel as in step (b). Push charge
button and verify the following conditions occur
with the controls on the power supply set as
indicated:
|
|
Power Switch |
Kilovolt |
Fire |
Charge |
Dump |
Meter |
ON |
1.00 |
OFF |
ON |
OFF |
0 |
|
(d) |
Push dump button and verify that the conditions
return those indicated in steap (b).
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8.0 To test and calibrate the high voltage
(a) |
Turn supply off, replace the 15 amp fuse,
and set the controls as indicated:
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|
Power Controls |
Power Switch |
Kilovold |
Fire |
Charge |
Dump |
Meter |
ON |
1.00 |
OFF |
OFF |
ON |
0 |
|
K1 Test Panel Controls |
S1(pos) |
S2 |
Ground |
Sync |
Meter |
|
OFF |
ON |
ON |
OFF |
0 |
|
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(b) |
Push the charge button. Verify that charge light
comes on, meter rises to 1 KV approximately and stops.
Charge light should then go out and fire light comes
on.
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(c) |
Leave the controls the same as in step 7 except,
set the kilovolt pot to 4.5 KV. Push charge button
and verify when charge light comes on, meter raises
to 4.5 KV exactly and stop. Charge light should then
go out and fire light comes on. If the meter does not
read 4.5 KV exactly, push the dump button adjust R12
on the logic card and repeat the step.
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9.0 To test the fire and synchronizing circuit
(a) |
Push dump button, connect a 5 kilojoule lamp to J4
(lamp in head using a heat exchanger of course). All
controls same as in Paragraph 7.0, Step (b) except set
the kilovolt pot to 3.5 KV. Push charge button, wait
until fire light comes on, then push the fire button.
Verify that lamp fires, neter goes to zero, and the
synchronizing light does not come on, turn the power
switch off, discharge the 400 microFarad bank with the
discharge rod. Disconnect the 110 VAC line and interchange
the two wires on L1.
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(b) |
Reconnect the 110 VAC line and repeat step (a) three or
four times. Use the reset button on the K1 test panel to reset
the synchronizing light after each fire.
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10.0 To test outputs on TB1
(a) Make sure S2 on the test panel is on, set the kilovolt dial
on the power supply to 1.00 and verify that the meter on the test
panel reads the following voltages when S1 is switched.
S1 (pos) |
Meter |
1 |
34V 10% |
2 |
0 |
3 |
50 10% |
(b) Set kilovolt dial on the power supply to zero and verify meter
on the test panel reads the following voltages when S1 is switched.
S1 (pos) |
Meter |
1 |
34V 10% |
2 |
34V 10% |
3 |
50V 10% |
(c) Push "F" button on test panel and verify that voltage on meter
drops and return to original value.
(d) Set kilovolt dial to 1.00 on power supply, push "C" button on
test panel and verify suplly charge to 1.00 KV
(e) Push "D" button on test panel and verify that supply dumps.
11.0 To test remote input
(a) Turn power switch off. Conect a K1 remote assembly to J2
(remote connector). Set controls as in Paragraph 8.0 step (a). Turn
power switch on and push the remote charge button. When supply is
charged, push remote fire. Verify that supply charges and fires.
(b) Push charge button. But, before suply is completely charged, push
remote dump button. Verify that remote dump button dumps supply.
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