the total RMS value of all the harmonic current supplied by the main power to the VSD divided by
the chiller Full Load Amps, in percent. A standard VSD, less the optional filter typically has an input
current TDD level on the order of 28-30%. The chiller can be started after the Operator presses the
WARNING RESET button.
VSD – Low Frequency Detected
After a 20 second bypass after entering System Run, if the VSD frequency decreases to below 1 Hz
less than the minimum allowed frequency for 25 continuous seconds, this shutdown is initiated.
The minimum allowed frequency for the VSD is 25 Hz for 50 Hz units; 30 Hz for 60 Hz units. The
Operator must press the WARNING RESET button to reset the fault.
219
YK-EP Style B Centrifugal Chiller
Содержание 160.87-OM1
Страница 2: ...2 YK EP Style B Centrifugal Chiller ...
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Страница 227: ...Figure 72 Sample printout of Status 227 YK EP Style B Centrifugal Chiller ...
Страница 228: ...Figure 73 Sample printout of Status cont YK EP Style B Centrifugal Chiller 228 ...
Страница 229: ...Figure 74 Sample printout of Setpoints 229 YK EP Style B Centrifugal Chiller ...
Страница 230: ...Figure 75 Sample printout of Setpoints cont YK EP Style B Centrifugal Chiller 230 ...
Страница 231: ...Figure 76 Sample printout of Schedule 231 YK EP Style B Centrifugal Chiller ...
Страница 232: ...Figure 77 Sample printout of a Sales order YK EP Style B Centrifugal Chiller 232 ...
Страница 233: ...Figure 78 Sample printout of a Sales order cont 233 YK EP Style B Centrifugal Chiller ...
Страница 234: ...Figure 79 Sample printout of History YK EP Style B Centrifugal Chiller 234 ...
Страница 235: ...Figure 80 Sample printout of History cont 235 YK EP Style B Centrifugal Chiller ...
Страница 236: ...Figure 81 Sample printout of a security log report YK EP Style B Centrifugal Chiller 236 ...
Страница 260: ...Figure 87 Microboard 031 03630 007 Figure 88 Program card 031 03601 002 YK EP Style B Centrifugal Chiller 260 ...