Despatch LBB Series User Manual

OPERATION LBB Series Oven Owner’s Manual
34 Version 13
Copyright © 2011 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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d
Derivative
Time
Expressed in seconds, value shows the effect of the
derivative time is in direct proportion to the time setting
0
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 4).
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 4. 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)

Despatch LBB Series Specifications

General

Brand	Despatch
Model	LBB Series
Category	Oven
Language	English