Despatch LBB2-xxA/B-2 User Manual
Page 34
O
PERATION
LBB Series Oven Owner’s Manual
34
Version
18
Code Name
Description
Settings
bS
PV Bias
(Offset)
Expressed in degrees, from –199 to 999. Use this
parameter to calibrate oven temperature.
0
LoC
Key Lock
Provides levels of access to the controller:
•
0 = No key lock, full access to controller
•
1 = Prevents changing of all parameters except
setpoint
•
2 = Prevents all parameters from being changed
including the setpoint
•
-1 = Set to enter the Set-up parameter setting display.
1
nr
Manual
Reset
Only when I & d are OFF. Expressed in percent.
Controller outputs this value when process variable equals
setpoint, but only if I = 0.
N/A
HyS
Hysteresis
Only when CtL is OFF, change CtL to PID)
Expressed in degrees. When CtL = OFF, this value
determines the change in temperature needed to turn
controller output from full OFF to full ON.
N/A
*If
P
is not displayed the Control Mode (
CtL
) must be first set to
PID
.
5.4.2.2. Control Instrument Operating Mode Notes
•
The controller is factory set to
LoC
=1 (allowing only the setpoint to be changed). This setting
prevents inadvertent changing of control parameters.
•
If necessary to alter control parameters, change the
LoC
=1 to
LoC
=0. See Section 5.4.2.1 for
more information.
•
When
LoC
= -1, parameters are displayed in the order shown in the Set-Up Parameters table
(Table 5).
•
Note: If unable to change setup parameters:
o
Change the
LoC
= 0
o
Press the
until
LoC
appears again
o
Change
LoC
= -1
o
Press the
Table 5. Control Instrument Configuration Parameters.
Code Name
Description
Settings
In
Input Type
Set for type of input and whether PV is in °C or °F
5
(35 if
°
F)
SPH
Setpoint High
The maximum setpoint limit for oven. The user cannot
set the setpoint above the maximum setpoint.
204 (400 if
°
F)
SPL
Setpoint Low
The minimum setpoint limit of oven. The user cannot
change the setpoint below this lower setpoint limit.
0 (32 if
°
F)
SC
Super
Function
Despatch recommends leaving the SC feature OFF
OFF
dr
Direct/Reverse
Action
Direct/Reverse action. This value is set for 0 (reverse
action).
0
dSP
PV/SP Display
Priority of PV/SP display. This parameter either
displays the PV (process variable) or SP (setpoint).
•
0 = process variable
•
1 = setpoint
0