PCC-IV Instruction Manual (rev. 0.1)
Page 4-8
Section 4
–
Menu Operations
Change a Password: Go to the Password submenu and enter the Engineer,
Technician, or Operator password as described above. If the password system is
disabled, enter the default password from the table above. You must be logged on at
the same or higher password level to change a password. Then, press the
Change
Password
soft-button and select
Change Engineer/Technician/Operator PW
. On the
next Password submenu, press the
Enter Password
soft-button and a keypad will
open. Type in the desired password. Write down the number that is being displayed,
then press Enter
; “Password Changed” will be displayed.
ATTENTION
It is very important to write down the Engineer (OEM Engineer), Technician
(OEM Technician), and Operator Password numbers and keep this record
in a convenient location.
DO NOT LOSE THE PASSWORDS. If the passwords are lost or
forgotten, you will not be able to modify any of the Blockware data.
If the password has
been lost, contact Preferred Instruments during normal East Coast business hours at (203) 743-
6741 for a controller specific temporary password. Have the serial number and real-time clock
and date of the affected unit(s) available.
Disabling the Password System
Change all passwords to their factory default values as described above, and the password system will be disabled.
Browse Blocks Menu
This menu allows the user to display or modify all the Blockware parameters (i.e., PID
Gain, Alarm Setpoint,) or Force Block outputs in all 256 Blocks of the PCC-IV memory.
General
Do not attempt to use the Browse Blocks menu until after you have read the complete
Instruction Manual. The concepts in the following Sections are particularly important,
and should be fully understood before modifying the blockware:
Section 4
SERVICE MANUAL Menu
Section 4
PASSWORD Menu
Section 4
MEMORY Menu
Section 5
Configuring Blockware Control Strategies (the entire
Section)
Section 6
Blockware Functions
– Technical Reference (the entire
Section)
WARNING
The PCC-IV is commonly used to control potentially dangerous combustion and chemical
processes. VERIFY THAT THE PROCESS BEING CONTROLLED HAS BEEN SAFELY
SECURED, ISOLATED, OR BYPASSED (AS REQUIRED BY THE SITE CONDITIONS)
BEFORE MODIFYING ANY OF THE BLOCKWARE DATA IN ANY BLOCK IN THE PCC-IV
MEMORY.
FAILURE TO DO SO CAN RESULT IN EQUIPMENT DAMAGE, INJURY, OR
DEATH.
The user should always refer to a blockware schematic drawing when attempting to modify any aspect of the
blockware.
The PCC-IV blockware executes continuously, including when the Browse Blocks menu is being used. Any changes
that are made will affect the blockware as soon as the
ENTER
key is pressed.
