OperatorManual.pdf - 第26页
Oven features and options SOME FUNCTIONS I N THIS SECTION MAY NO T EXIST ON ALL OVENS BECAUSE THEY ARE OPTIONAL!! Operator manual 26 August 2003
Oven status
SYSTEM SETUP
The oven enters the system setup state any time an action is performed such as calibrations, during
QUICK COOL, MANUAL RAIL WIDTH ADJUST
, and other similar functions. This occurs automatically to
temporarily disable any non-critical alarms which may be affected, and the Yellow light on the light tower
will be on.
The Oven Status Bar will display: SETUP
ALARM SHUTDOWN
When a Critical Alarm condition is detected in the oven, an alarm message will be displayed and shutdown
will occur. An alarm shutdown can occur when any parameter set for critical alarm goes over
(or under) acceptable limits.
The Color of the zone's temparature bar indicates the deviation to the setpoint. Green = OK, Blue =
too cold, Red = too Hot
The Oven Status Bar will display: SHUTDOWN: ALARM
The Event & Alarm log will display the reason for the alarm shutdown.
Status messages, and Oven Control Actions are based on the following definitions for the
Status Terms
used:
Status Terms
Status
DESCRIPTION
OFF
The oven is not running
SHUTDOWN
The oven is in the process of shutting down.
STABILIZING
The oven is trying to reach the set points of the present
recipe. See Oven Status Bar.
COUNTDOWN
The oven has stabilized and is in a "final countdown delay"
before going to "process ready".
READY
The oven is "process ready".
WARNING
A process variable is outside limits. See Alarm/Event Log
CRITICAL WARNING
A process variable is outside limits. See Alarm/Event Log
ALARM
A process variable is outside limits. See Alarm/Event Log
CRITICAL ALARM
A process variable is outside limits. See Alarm/Event Log
Operator manual 25 August 2003
Oven features and options
SOME FUNCTIONS IN THIS SECTION MAY NOT EXIST ON ALL OVENS BECAUSE THEY ARE
OPTIONAL!!
Operator manual 26 August 2003
Rail width adjustment
The Rail width may be adjusted manually or by the optional computer controlled rail width adjust.
When Product is started, the rail width may be adjusted. During the rail width adjustment, all non-severe alarms
and severe warnings are disabled. They are re-enabled when the rail width adjustment is complete.
Rail width accuracy is important, use a test board to set up for accurate width adjustment. The boards should rest
on the chain pins and slide freely along the conveyor without binding by rotating or jamming against the conveyor
chain.
The dimensions for setting up the rail width should be measured between the walls of the chain.
The manual rail width adjustment must be enabled in the Oven Program to be able to adjust the Rail Width.
The conveyor speed will increase to the maximum calibrated value and the rail width can be adjusted using the
switch located on the control panel at Offload end of the oven. If the oven is fitted with automatic rail width
adjustment, but the rail width has been adjusted manually, the rail width alarm is disabled during manual
adjustment. (An alarm will be displayed if the new manually adjusted width exceeds the Alarm Setpoints).
COMPUTER CONTROLLED RAIL WIDTH ADJUSTMENT (OPTION)
Ovens with the computer controlled rail width adjustment option will automatically adjust the rails to the product
width value specified in the
PRODUCT
description. Unless the Manual Rail Adjust is selected in the
Start-up
Wizard
Dialogue Box or No Rail Adjust was selected in the
PRODUCT
description.
Computer controlled rail width adjustment occurs only when starting a
PRODUCT
. Refer to
Start a Process.
NOTE
: Ovens with computer controlled rail width adjust may have the rail width adjusted manually. Refer to
Manual Rail Width Adjustment.
MANUAL RAIL WIDTH ADJUSTMENT
TO AVOID DAMAGE, CONFIRM THAT NO BOARDS ARE BEING TRANSPORTED BY THE
CONVEYOR BEFORE CONTINUING.
Operator manual 27 August 2003