Red Lion TCU - Manual (Page 27)

Protected Parameter Mode Reference Table
Display Parameter
Range and
units (Factory
Setting Value) Description/Comments
Prop Proportional
Band 0.0 to 999.9%
of selected
input range
(4.0) 0.0% is ON/OFF control. If using
ON/OFF mode, set control
hysteresis appropriately. This
parameter does not appear if
locked (LOC).
Intt Integral
Time 0 to 9999 sec.
(120) 0 is off. This parameter does not
appear if proportional band = 0.0%
or locked (LOC).
dErt Derivative
Time 0 to 9999 sec.
(30) 0 is off. This parameter does not
appear if proportional band = 0.0%
or locked (LOC).
Pb-2 Proportional
Band #2
(Secondary) 0.0 to 999.9%
of scaled input
range
(4.0) 0.0% is ON/OFF control. Second
Analog Input models only.
It-2 Integral
Time #2
(Secondary) 0 to 9999 sec.
(0) 0 is off. This parameter does not
appear if proportional band #2=
0.0%, or if locked (LOC). Second
Analog Input models only.
dt-2 Derivative
Time #2
(Secondary) 0 to 9999 sec.
(0) 0 is off. This parameter does not
appear if proportional band #2=
0.0%, or if locked (LOC). Second
Analog Input models only.
SP-2 Internal
Cascade
Directed
Setpoint -999 to 9999
(N/A)
Second Analog Input models only.
Read only parameter.
Display Parameter
Range and
units (Factory
Setting Value) Description/Comments
rtio Remote
setpoint
ratio
multiplier 0.001 to 9.999
(1.000) Second Analog Input models only.
bIAS Remote
setpoint
bias offset 0 to 9999
(0) Second Analog Input models only.
AL-1 Alarm 1
value -999 to 9999
1 or 0.1 degree
(0) Alarm option models only.
AL-2 Alarm 2
value -999 to 9999
1 or 0.1 degree
(0) This parameter does not appear if
the alarm option is not specified,
the cooling option is installed, or if
locked (LOC).
Code Access
code to
unprotected
mode 0 to 250
(0) To gain access to unprotected
mode, enter the same value for
Code as entered in parameter
lockouts. This parameter does not
appear if zero is entered in code
parameter lockout.
End Unit returns
to normal
display
mode. Brief display message display
mode.
19
PROTECTED PARAMETER MODE
The Protected Parameter Mode is accessed from the normal display mode
by pressing the PAR button with program disable active. In this mode, the
operator has access to the list of the most commonly modified controller
parameters that have been “unlocked” in the configuration parameter
lockouts module. Depending on the code number entered in the lockout
mo d u l e , a c c e s s to th e u n p r o t e c t e d p a r a met e r mo d e a n d h e n c e , t h e
configuration parameter modules is possible. The controller returns to the
normal display mode if the unprotected mode and configuration modules
cannot be accessed. This mode cannot be accessed if all parameters are locked
out in Configuration Module 3.