York MILLENIUM 351-46, Руководство по эксплуатации

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FORM 160.00-O1 (1020)
JOHNSON CONTROLS
15
Style “B” Units – For the first time, we have imple -
mented a system which records real-time data, even if
the chiller is not running. Since four power losses, or
four unsuccessful attempts at starting would overwrite
data from the last time the chiller ran, specific history
displays have been generated as follows:
CURRENT OR LAST SYSTEM RUN DATA
LAST SFTY / CYCL SHUTDOWN WHILE RUNNING
SFTY / CYCL SHUTDOWN HISTORY (1)
SFTY / CYCL SHUTDOWN HISTORY (2)
The above lines appear sequentially when the VSD
History Key is depressed. When this key is released,
the message being viewed at that time is maintained.
Using the white “Advance Day / Scroll” key, the Display
Status Message may be viewed, and by continuing to
depress the white “Advance Day / Scroll” key, all VSD
operating data from that instant in time may be viewed.
For example, by depressing the VSD History key once,
you will see:
CURRENT OR LAST SYSTEM RUN DATA
Now by depressing the white “Advance Day / Scroll”
key, you might see:
21 OCT 0804 NO MALFUNCTION DETECTED
Depressing the white “Advance Day / Scroll” key again
will display the first line of historical data. Continue to
depress the white key to view all lines of data.
“Hidden” Key – There is an unmarked button on the
face of the control panel membrane keypad, located just
below the “Clock” key. When this button is pressed, you
will see a display of four parameters:
DPP = X.XX; PRV = XXX%; LWTD = XX.X; FQ = XX HZ
• D-P/P, the ratio of the condenser pressure minus the
evaporator pressure to the evaporator pressure.
• Percent Vane Position. 100% is wide open vanes.
• Delta T, the difference between the leaving water
temperature setpoint and actual leaving water tem-
perature.
• Output frequency in hertz.
When the Filter is present, these additional lines are
available by scrolling:
INPUT KVA = ___; TOTAL PWR FACTOR = ____
INPUT V AB=___V.; BC=___V.; CA=___V.
INPUT CURR A=___A.; B=___A.; C=___A.
INPUT V THD: A=___%; B=___%; C=___%
INPUT CURR TDD%: A=___%; B=___%; C=___%
Display Data Key – This key functions as normal, but
offers two additional lines of display with VSD opera -
tion. After scrolling through the normal displays, these
additional lines are displayed:
D-P/P= ___ ; PRV POS = ___%; FREQ = ___HZ
TOTAL ACC SURGE COUNTS = ________
VSD History Key – This key provides four historical
records. Its exact operation varies, depending on the
style level of the VSD and software. The two types of
operation are as follows:
Original and Style “A” Units – Four previous safety /
cycling messages are stored, listing the message, and
indicating the historical order by placing the history num-
ber, one through four, in parenthesis after the message.
Using the white key labeled, “Advance Day / Scroll”,
one can view the same lines of data as are available
by pressing the “Options” and “VSD Parameters” keys.
The data displayed will be that recorded at shutdown,
if running - or will be data from the last time the chiller
ran, if the message was generated while the chiller was
idle. The recording of data from the last time the chiller
ran, is consistent with history data records on all previ-
ous YORK micropanel designs. Below is an example
of four histories:
22 OCT 1501 SERIAL RECEIVE FAULT (1)
21 OCT 1635 SYSTEM CYCLING - AUTOSTART (2)
20 OCT 1000 SYSTEM CYCLING - AUTOSTART (3)
20 OCT 0808 SYSTEM CYCLING - AUTOSTART (4)
These displays will appear sequentially while depress-
ing the VSD History key. When the VSD History key is
released, the message present at that time is maintained
on the screen. With any one of these messages on the
screen, the associated VSD operating data just prior to
unit shutdown may be viewed by scrolling, using the
white “Advance Day / Scroll” key.