9) FAIL OPERATION
FAIL OPERATION allows the user to choose how the
S
MARTVALVE will respond to a loss of the analog input
signal(s). Selections are HOLD or DROP. HOLD will
keep the Feed Rate at its current level and DROP will
lower the Feed Rate to Zero. NOTE:
For compound
loop and feed forward control, both (Flow and Residual)
input signals must be lost for the Fail Operation
parameter to take effect. This will be explained in
greater detail in Section 8.0 (OPERATIONAL MODE).
NOTE:
FAIL OPERATION is the final parameter to
check/change before exiting the Engineering Mode.
C) TO EXIT THE ENGINEERING MODE
1
) Press ESC (Escape).
2) After pressing Escape, you will be asked if you would
like to ENTER NEW ENG PWD (Enter a new Engineering
Password?).
3) Press NO to keep the existing password and to return to
the Main Operating Screen.
4) Press YES to change the password. The TOP LINE of
the display will read: NEW ENG PW 0 ? ? ?
a) Press the UP or DOWN keypad button(s) repeatedly
until the preferred FIRST digit is displayed. Then
press NEXT to accept the new value.
b) The number 0 will appear as the second digit. Once
again, use UP or DOWN to scroll to the preferred
number. Then press NEXT to accept and continue to
the third digit.
c) Repeat the same steps to select the third and fourth
digit.
d) Finally, press ENT (Enter) to accept the New
Password and return to the Main Operating Screen.
NOTE:
At this time, if any changes to the settings were
made while in the Engineering Mode, you will be asked
if you want to SAVE CHANGES? Press YES or NO
accordingly and you will return to the Main Operating
Screen.
IMPORTANT:
Once all Engineering parameter settings
have been confirmed, proceed directly to the next section
(6.0 CONFIGURATION MODE) to check and/or change the
Configuration parameter settings.
The Configuration Mode is used to set the basic valve
p
arameters. Each parameter MUST be checked and/or
changed prior to placing the system into operation. Simply
enter the configuration mode as explained below and the para-
meters will be displayed individually in the order they are listed.
The list includes a detailed description of each parameter
along with the settings and control schemes that apply.
IMPORTANT:
Only the configuration parameters that apply to
the selected Control Scheme will be accessible, therefore,
confirm that the proper Control Scheme has been chosen in
t
he Engineering Mode before proceeding with the configuration
parameter settings.
A) TO ENTER THE CONFIGURATION MODE
1) Press and hold the far right (#4) keypad button for
approximately five seconds and you will be asked to
enter the Configuration Password. The TOP LINE of the
screen will read: ENTER CFG PW 0 * * * .
2) Press the NEXT keypad button three times until the
factory default password (0 0 0 0) is displayed.
3) Press ENT (Enter) and the first Configuration Parameter
(FLOW UNITS) will appear.
B) CONFIGURATION PARAMETERS
(Page 11)
NOTE:
The far right columns of the parameters list designate
the control scheme(s) that apply to each parameter.
The abbreviations are:
1) FP (Flow Proportional)
2) RO (Residual Only)
3) CL (Compound Loop)
4) FF (Feed Forward)
10
6.0 CONFIGURATION MODE
To Next Page
Loading...