mensor PCS 400, Operation Manual

Page: 38 / 118

Continue using [+] or [–] to proceed to another step
to edit as above, or press [CE] to leave the
LIST/EDIT SE
Q UENCES mode. The display will
change to:
SEQUENCE-42 HAS CHANGED
PRESS = TO SAVE CHANGES, CE TO QUIT
NOTE:
A n A U T O M A T IC U P S C A L E /
DOWNSCALE or an AUTOMATIC SINGLE
DIRECTION sequence can be edited only
one step at a time. To make a universal
change to one of the automatic routines
use the CREATE/DELETE mode.
Run Sequence
Select this function to choose a sequence to run
from among the currently programmed sequences.
To select the sequence number to run press [+] or
[–] to scroll through existing sequences. The first
selection offered will be the sequence which was
last used, or ‘?’. Then, press [=] to start the se-
quence number displayed, or if ? is displayed then
press:
[=] to rerun the most recently run sequence; or
[nn] where nn represents the desired sequence
number, then [=] to run it; or
[CE] to return to SE
Q
UENCE MODES, or to clear
the last key pressed.
After a sequence has started, all keys are disabled
except [+], [–] and [CE].
[+] to force the hold time to zero. This terminates
the current step and immediately starts the
next step.
[–] to return the delay to the original hold time
and restart the current step countdown.
[CE] Press [CE] once to suspend operation (PAUSE
mode.) At this point the [+] and [=] keys will
become active. Press [+] to skip the current
step, or [=] to resume operation.
[CE](again) will terminate the current se-
quence and return to SE
Q
UENCE MODES.
Press [CE] a third time to return to normal
operation in STANDBY mode.
During sequence operation, the top line of the
display will show the sequence number, the se-
quence step, the pressure mode, and initially, the
commanded control pressure. The bottom line al-
ways displays the measured pressure reading and
either a [U] for unstable, or an [S] for stable pres-
sure:
SEQ:2-3 CTRL 15.0000 PSI G
MEASURED: 11.5555 PSI G [U]
In CONTROL mode when the pressure first stabi-
lizes the HOLD countdown timer will appear in the
pressure display field on the top line. A beep will
be sounded for each of the final 5 seconds of the
countdown. When the count reaches zero the next
step executes immediately.
At any time during the countdown press [+] to go
to the next step, press [–] to restart the countdown
for the current step, or press [CE] to set the current
step to PAUSE.
If a sequence step was programmed for zero hold
time the instrument will automatically implement
pause mode. In this mode PAUSE will be displayed
for the hold time when the CONTROL pressure
becomes stable at the setpoint. With PAUSE in the
display the sequence will idle in its current condi-
tion until [=] is pressed to either resume the count-
down, or initiate the next step. At the end of a
sequence, the system will return to the SE
Q UENCE
MODES screen.
DUAL PASSWORDS
Beginning at version 2.35 there are two levels of
passwords in the system where previously there
was one. Now there is a line level or zero password
which allows access to Zero Adjustments, and a
master password that will access all protected
functions, including changes to passwords. In or-
der to change either password the current master
password must be entered. Since passwords are
seldom used they are easily forgotten. Please keep
a written record of newly entered passwords.
The master password will work for any protected
function until it is changed through the LIM-
ITS/CHANGE PASSWORD function. Either pass-
word can be from one to six digits long. To allow
line technicians to easily make zero adjustments
the zero password could be changed to the single
character “0", for example. To change either pass-
word scroll down the menus to the appropriate
password to be changed. Then, at the ENTER
PCS 400
LOCAL OPERATION
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