Woodward ProTech 203, Руководство по эксплуатации

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ProTech 203 Overspeed Protection System Manual 85204
14 Woodward
PRESENT SPEED is the first parameter displayed. Each subsequent press of
the menu key displays the next parameter in the list. Appropriate descriptive units
for each parameter are also displayed. When the keyswitch is in the MONITOR
position, the CURSOR RIGHT, ADJ UP, and ADJ DOWN keys have no effect.
When the keyswitch is in the PROGRAM position, an annunciator appears in the
display, and a cursor appears if a tunable parameter is being displayed. The
tunable parameters are:
•
TRIP SPEED SETPOINT
•
MPU FAILED SETPOINT
•
MPU FAILED TIMEOUT
•
MPU GEAR TEETH
•
TRIP ON MPU FAILURE
•
TIMER STARTS ON RESET
•
ALARM IF SPEED IS <MPU FAILED SETPOINT
If any tunable parameters are changed, the LCD displays CHANGES SAVED for
two seconds when the keyswitch is returned to the MONITOR mode.
The CURSOR RIGHT, ADJ UP, and ADJ DOWN keys perform as follows in the
PROGRAM mode:
CURSOR RIGHT—Moves the cursor one position to the right.
ADJ UP, ADJ DOWN—For integer values, these keys increase/decrease the
displayed value by the power of ten indicated by the cursor position. For
example, if the cursor were under the "0" of the value 5014 and the ADJ DOWN
key were pressed, the value would change to 4914.
For a time display in minutes and seconds, increase/decrease the displayed
value by the number of seconds or minutes indicated by the cursor position. For
example, if the cursor were under the "4" in 1 MIN 47 SEC and the ADJ UP key
were pressed, the value would change to 1 MIN 57 SEC. If the ADJ UP were
pressed again, the value changes to "2 MIN 07 SEC".
For a YES/NO value, pressing either ADJ UP or ADJ DOWN causes the value to
toggle to the opposite value.
Pressing and holding the ADJ UP or the ADJ DOWN key causes the value, after
a short delay, to change at a fixed rate.
If changing a value would cause it to exceed predetermined limits, no change
takes place. Table 4-1 gives the allowable range for each tunable parameter.
Table 4-1. Allowable Ranges
Tunable Minimum Maximum
Trip Speed Set Point 250 rpm 25 000 rpm
MPU Failed Set Point 100 rpm 25 000 rpm
MPU Failed Timeout 1 sec 533 min 20 sec
MPU Gear Teeth 20 120