Table 54: Programmable
Button
Access level Description
High Limit
–
0.5 to 1.2VDC; default 0.6VDC
Specifies the Stall Detector Board output voltage that represents an
acceptable amount of stall noise.
The minimum difference between the High Limit Setpoint and the
Low Limit Setpoint is 0.1VDC. If a Low Limit Setpoint is entered
which is less than 0.1VDC below the High Limit Setpoint, the High
Limit Setpoint is adjusted so that it is 0.1VDC above the newly
entered Low Limit value.
Low Limit
–
0.3 to 0.8VDC; default 0.5VDC
In the Stall Reacting State, the VGD is driven closed until the Stall
Detector Board output voltage decreases to this level.
The minimum difference between the High Limit Setpoint and the
Low Limit Setpoint is 0.1VDC. If a Low Limit Setpoint is entered
which is less than 0.1VDC below the High Limit Setpoint, the High
Limit Setpoint is adjusted so that it is 0.1VDC above the newly
entered Low Limit value.
VGD Count
Admin
Allows the user to clear the VGD Cycle Count.
Extreme Stall
Duration
–
10 to 20 minutes; default 10
Specifies the maximum allowed time an extreme stall condition can
exist before the VGD operation is disabled and driven to the full
open position to protect it from damage.
PRV VGD
Inhibit
–
40% - 100% default 100%
While the Pre-Rotation Vanes position is greater than this setpoint,
extreme stall conditions are not checked, the VGD control is
inhibited and the VGD is pulsed open according to the Open Pulse
Setpoint. While this is in effect, PRV Position Override is displayed as
Control Status.
Table 55: Navigation
Button
Access Level Description
Home
Service
Returns user to HOME Screen.
VGD Screen
Service
Returns user to VARIABLE GEOMETRY DIFFUSER Screen
YK-EP Style B Centrifugal Chiller
68
Содержание 160.87-OM1
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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 ...