User Manual

LBB Series Oven Owner’s Manual OPERATION
Version 15 35
Copyright © 2012 by Despatch Industries.
All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any
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Ct
Cycle Time
Expressed in seconds, value shows total time for one
ON/OFF cycle of the controller output during the
proportional action
1
FL
Input Filter
Expressed in seconds. Use this function when the PV may
fluctuate greatly (for example, when an input signal
contains noise)
0
bS
PV Bias
(Offset)
Expressed in degrees, from –199 to 999. Use this
parameter to set the actual oven temperature to the
controller display.
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
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 Set-up 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)