Red Lion PCU - Manual (Page 23)

PARAMETER ENTRY
The PAR button is used to select the desired parameter. To modify the
parameter setting, use the UP and DOWN buttons. Press PAR to enter the new
value. The controller progresses to the next parameter. In a Configuration
Parameter Module, pressing the DSP button causes the new value to be
rejected, the controller displays “End”, and returns to the Normal Display
Mode. For those parameters outside the Configuration Parameter Modules, the
new value takes effect and is committed into controller memory WHILE the
value is keyed in. The following is a list of commonly modified parameters:
Setpoint
Output Power
Output Power Offset
Proportional Band
Integral Time
Derivative Time
Proportional Band #2
Integral Time #2
Derivative Time #2
Directed Setpoint (Cascade)
Ratio
Bias
Alarm 1 Value
Alarm 2 Value
Note: While in a Configuration Parameter Module, all new parameters are
rejected and the old ones recalled if power is removed from the controller. If
power is removed while modifying any parameter, be certain to check the
parameter for the proper value.
NORMAL DISPLAY MODE
In the normal display mode, the process value is always displayed in the
main display. By successively pressing the DSP button, one of these
operational parameters can be viewed in the secondary display (model
dependent):
Setpoint
% Output Power
Second Analog Input (Remote Setpoint)
Process Setpoint Deviation
Each of these displays can be independently locked out from appearing or
from being modified by the user (see Lockouts Module, page 27). Only from
t h e n o r m a l d i s p l a y m o d e c a n a c c e s s b e g a i n e d t o t h e o t h e r m o d e s
(Unprotected, Protected, or Hidden).
MODIFYING A SECONDARY DISPLAY PARAMETER FROM
THE FRONT PANEL
The controller must be in the normal display mode to modify the secondary
display parameters. The Setpoint value and % output power (in manual mode)
are the two parameters which may be modified. The other parameters are
read-out values only.
Setpoint Value - Use the up and down arrow buttons to modify the setpoint
value when viewed, if not locked. If locked, the setpoint can be changed in
the unprotected mode when “SP” is viewed, independent of viewing in the
secondary display. The setpoint value is confined to the programmable
setpoint limit values (SPLO & SPHI, Input Module 1).
% Output Power - The % Output Power can only be changed when the unit is
in the manual mode. See Manual (User) and Automatic Operations, page
12. The annunciator % PW lights, and the Manual annunciator flashes
when viewed. Use the up and down arrow buttons to modify the % Output
Power if not locked. If locked, the % output power can be changed in the
unprotected mode when “OP” is viewed, independent of viewing in the
secondary display. The % output power is not confined to the programmable
output power limit values (OPLO & OPHI, Output Module 2).
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