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Chapter 7
535-PROF User's Manual
Applications
the setpoint value. It does not prevent the operator from changing setpoints
via the
SP SELECT
(in the
TUNING
menu).
4.
AUTO./MAN
. locks out the
MANUAL
key preventing the operator from
transferring between automatic control and manual control.
5.
SP SELECT
locks out the
SP SELECT
parameter in the
TUNING
menu.
This prevents the operator from changing among the various local setpoints
or changing to remote setpoint. It does not prevent the operator from changing
the setpoint value via the and keys.
6.
RUN KEY
locks out the
RUN key
. This prevents an operator from starting,
holding or aborting a recipe.
7.
ALARM ACK.
locks out the
ACK
key, preventing an operator from
acknowledging any alarms.
8.
TUNING
locks out modification to the parameters in the
TUNING
menu,
preventing unauthorized changes to the tuning parameters or the activation/
deactivation of the self tuning algorithm.
9.
RECIPES
locks out modification to the parameters in the
RECIPE #
menu.
10.
CONFIGURE
allows access to the configuration menus, but prevents any
unauthorized changes to the configuration parameters. If locked out, the
security code is not accessible.
Basic Operating Procedures
The security feature can be overridden. When a locked function is attempted, the
operator will have the opportunity to enter the security code.
If the correct security
code is entered, the operator has full access. The security feature is reactivated
after one minute of keypad inactivity.
If the security code is forgtton, the security
feature can still be overridden.
• The security override code is
62647
.
Store this number in a secure place and blacken out the code in this manual
to limit access.
S. RESET INHIBITION
Reset Inhibition is useful in some systems either at the start-up of a process or
when a sustained offset of process variable from setpoint exists. In conditions
like these, the continuous error signal may cause the process temperature to
greatly overshoot setpoint. Any of the digital inputs may be set up so that the
contact closure disables the reset action (sets it to zero).
Software Configuration
1. Go to the
CONFIG.
menu.
2. Set corresponding parameter(s)
CONTACT:1
to
CONTACT:5
to RST. INHBT.
T. PROCESS VARIABLE READING CORRECTION
Conditions extraneous to the controller—and aging thermocouple, out of
calibration transmitter, lead wire resistance, etc.—can cause the display to
indicate a value other than the actual process value. The
OFFSET
and
GAIN
parameters can be used to compensate for these extraneous conditions. NOTE:
This feature is provided as a convenience only. Correcting the cause of the
erroneous reading is recommended.
1. Go to the
PV1 INPUT
menu.
NOTE:
Lock out
CONFIGURE
for full
security. If left unlocked, the operator
will have access to the security code.
NOTE:
The security function is
compromised if the security code is left
at zero (0).
NOTE:
Security does not prevent the
operation from the digital inputs or
serial communications.
