Hotset GmbH
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Start-up-, Service- and Operation Manual hotcontrol cDT+
Rev. 1.00.05
Subject to technical changes
15.5 Start-up mode
15.6 Leading zone operation
Description
The start-up operation is one of the eldest functions in the hot runner controllers.
The main reason for the function is the hygroscopic characteristic of the isolation ma-
terial Magnesium oxide used in the heaters. That means, that this material binds
moisture and influences therefore the electric isolation negative. Voltage application
may result in damage of the heater.
How it works
That should be avoided by start-up operation. At start-up, the zones are not directly
heated up to setpoint value with full heating power, but for a defined start-up time to
a setpoint value of 100°C. During this time the moisture is completely dried in the
heating element, so that after elapsed start-up time, heating up to the end setpoint
value is safe.
What good is it
The start-up operation implies high operating reliability and extension of lifetime of
the heating elements, what is reflected in low operating and maintenance costs.
Setting by
[P015]Start-up mode (page 191)
[P016]Start-up time (page 191)
For further details on parameters ([P***], [SP**], [CP**]) see Manual Parameters
hot-
control cDT+
.
Text in zone display see chapter
Messages - Alarms, Status, Functions (page 73)
Description
With a defective sensor, the zone must not inevitably be switched off or immediately
be repaired.
How it works
There are two alternative functions for solution of the problem. The first is the
manual mode, the second the leading zone operation. It provides the possibility, to
get the zone with a defective sensor controlled by a similar zone with intact sensor.
For this, the zone with the defective sensor must know the zone number of the
leading zone, to get the zone controlled with.
What good is it
The leading zone operation has advantages compared to the manual mode
because, unlike the manual mode with which a fixed output value is output
constantly, the possibility exists in leading zone operation that, in case of the zone
with defective sensor, external influences are further considered and controlled. The
function guarantees primarily operating reliability and prevents production
downtimes.
Setting by
[P019]Automatic leading zone operation (page 191)
[P024]Leading zone correction (page 191)
For further details on parameters ([P***], [SP**], [CP**]) see Manual Parameters
hot-
control cDT+
.
Text in zone display see chapter
Содержание hotcontrol cDT+
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