bentrup TC507 - Process Flow and Error Handling

16
24: upper val. lim
(value range -9999 to 9999)
Upper limit of the programme table value. Used for instance to ensure the values entered by the user stay
within the operation limits of the kiln
following parameters apply on selection VAL-S only:
32: value unit
(options °C, °F, °K, dg, mV, mA, O2, CO, %, ev, mb, m³, m³h, kh, kwh, Pa, AT)
Specifies the unit of the programme table value
33: lower val. lim
(value range -128 to 127)
Lower limit of the programme table value. Used for instance to ensure the values entered by the user stay
within the operation limits of the kiln
34: upper val. lim
(value range -128 to 127)
Upper limit of the programme table value. Used for instance to ensure the values entered by the user stay
within the operation limits of the kiln
following parameters apply on selection EVENT only:
42: EVENT number
(value range 0 to 2)
This unique number identifies the EVENT in the programme table for the digital output
following parameters apply on selection ATMS only:
52: atmosphere cde
(options AT)
Wählt die Einstellungsart des Atmosphären-Sollwertes aus. Wert nicht veränderbar
.
.
Table 7: process flow
The parameters of this section specify the reaction of the controller to any kind of unusual conditions that
might happen during a programme run. Examples for unusual conditions are broken temperature sensors, heat
up problems of the kiln, control channel errors etc. As well the conditions to enter the next segment during a
running programme can be adjusted as required
.
00: time in ramps
(options KEEP, UPDAT)
If the temperature of the pilot input (IN00) is higher than the start temperature of the ramp the time of the
ramp can be either kept or reduced accordingly
KEEP: Segment time is kept, setpoint begins as programmed
UPDAT: Segment time is reduced accordinly. Example: Segment 0 is 0°C, segment 1 is "in 2 hours to 500°C".
Assuming a kiln temperature of 250°C when starting the firing, the time is reduced to 1 hour (causing a setpoint
of 250°C)
01: monitor ch
(value range -CH02 to CH02 )
Only the channels specified are monitored for process problems. This setting allows to include only the
channel(s) which are important for the process. Either a single channel can be selected (e.g. on single zone
kilns) or a range of channels (e.g. ch00 to ch02 on a 3 zone kiln). A range is entered as minus channel (e.g. "-
ch02" stands for ch00 to ch02)
02: temp match %o
(value range 0.0 to 100.0)
An uncontrolled ramp (SKIP) the end of the segment is determined by match of actual temperature and final
segment temperature. Since the controller slows down temperature move at the end to avoid
over/undershoot it might take some time to finally reach the temperature althought it is not required by the
process. This parameter allows to specify a window to earlier complete the segment. Example: 2.0 ppm of
1320°C (max. channel temperature) = 2.64°C, SKIP segment ends at 997.36°C assuming a final ramp