B&C Technologies M720 Dryer Control (DE, DP, DI Series) - Manual (Page 27)

So, for example, if the temperature measured on the drum sensor (the standard temperature
sensor) is 63
o C and this parameter is set to 5 o C, the batch is considered to be dry when the
temperature measured by the infra-red sensor is higher than 58 o C.
8. Humidity dry val.
This parameter is available only when a humidity sensor is installed and the drying method
(see parameter 1) is set to A
UTO . This parameter is the humidity percentage to be detected
in order to determine that the batch is dry.
If the humidity sensor detects a humidity percentage less than or equal to the programmed
value, the batch is considered to be dry.
9. Max. inlet temp.
This parameter is available when a 2 nd temperature sensor on the inlet is installed. With
this parameter, the maximum temperature of the air coming into the inlet can be limited to
protect the loaded goods. For example, if this parameter is set to 175
o C, the heating output
will be switched off when the inlet temperature sensor (sensor 2) measures a temperature
higher than 175
o C.
10. Cooldown time
The maximum time the cool-down step may last. If the programmed cool-down temperature
(parameter 19) is not reached within this time, the program will finish anyway.
11. Cooldown temperature
The target temperature in the cool-down step. If this temperature is reached in the cool-down
step, the program will finish.
12. Drum direction
The direction of the drum during drying, cool-down and anti-crease. If a reversible drum is
configured in the machine configuration (see Section 4.9), this parameter can be used to set
the drum direction.
• Left: Only turn left (output 5), drum will never stop
• Right: Only turn right (output 6), drum will never stop
• Rev: Toggle between left (output 5) and right (output 6), runtime and stop time ad-
justable with program parameters 15 and 16)
If no reversing drum is configured, this parameter will not be available.
13. Drum speed
If the machine is equipped with an inverter (see Section 4.9, machine configuration), this
parameter can be used to adjust the drum speed during drying, cool-down and anti- crease.
The value of this parameter is a percentage of the maximum speed. So if this parameter is
set to 50%, the drum will run at half the maximum speed. When no drum with frequency
inverter is installed, this parameter will not be available.
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