INSTRUCTIONAL MANUAL
2750L-P/4500L-P/6000L-P
August, 2001
Rev. K
-113-
2.
The crest factor of the load current exceeds 2.5. With this condition the distortion will be much higher
at frequencies above 100 Hz.
SOLUTION:
Reduce the load or program the current limit to a higher value.
6.8 NO
OUTPUT
If the AC Power System has no output at the rear panel terminal block, TB1, the following items may be at fault:
1.
If the External Sense lines are not connected correctly, there will be no output. The error message
AMP FAULT will also be generated.
SOLUTION: Correctly connect the sense lines. Refer to Paragraph 2.5. page 20.
2.
When the output is overloaded an error message will be generated and the output relays will open.
The error message would be AMP FAULT.
SOLUTION: Remove the overload. Observe the output power capabilities. Refer to Section 1,
page 1.
3.
There is no input to the power amplifiers from the oscillator. Check the oscillator signals at the system
interface connector:
J7-24 Oscillator Phase A
J7-6
Oscillator
Phase
B
J7-23 Oscillator Phase C
J7-7
Oscillator
common/return
Program 135.0 volts on the 135 volt range. The three signals should be 5.0 ±0.10 VAC.
SOLUTION:
If there is no signal at the Systems Interface connector replace the oscillator. Refer to
paragraph 6.9. page 113.
SOLUTION: If the signal at the System Interface connector is greater than 5.0 VAC, it may be
necessary to replace the respective amplifier. Refer to paragraph 6.11. page 114.
4.
One of the internal fuses, F1, F2 or F3 has failed.
SOLUTION: Replace the fuse. Remove the input power and discharge capacitor C1 before
replacing the fuse. Refer to paragraph 6.11. page 114.
6.9 MODULE
REMOVAL
Figure 6-1 shows the location of the internal modules and assemblies. The figure shows the Amplifier Modules, A1, A2
and A3, with the insulator removed.
6.10
OSCILLATOR MODULE REMOVAL/REPLACEMENT
If a fault is found that requires the replacement of the Oscillator Module (assembly 4009-425) perform the following
steps and refer to Figure 6-1 for the module locations:
1.
Turn off the front panel circuit breaker.
2.
Remove the power system's top cover.
Содержание 12000L-1P
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Страница 110: ...INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 106 Figure 5 1 AC POWER SYSTEM BLOCK DIAGRAM...
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Страница 133: ...INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 129 Figure 1 STEADY STATE VOLTAGE...
Страница 135: ...INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 131 Figure 8 9 FREQUENCY TRANSIENT...
Страница 136: ...INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 132 Figure 10 11 ABNORMAL OPERATION...
Страница 137: ...INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 133 Figure 12 13 ABNORMAL FREQUENCY...
Страница 138: ...INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 134 Figure 14 EMERGENCY VOLTAGE...
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Страница 148: ...INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 144 FIGURE 2...