HPS-C - TS operating instructions
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Parameter settings
Values and functions which apply across the zones to all the controller modules can be changed or switched on and off in
this submenu. Access is also divided into different authorisation levels, which are protected by a password. Password entry
and access management are described in greater detail in the "Options" chapter.
The following screenshot shows the values, which can be changed in access levels "Level 0" and "Level 1".
Tolerance band monitoring
The tolerance band function enables automatic monitoring of the injection moulding process for compliance with the entered
set values. Tolerance band windows can be entered for the temperature and current control; these then apply to all
connected control zones. The monitoring function can be used in the data network with the injection moulding machine to
trigger various reciprocal actions, e.g. decreasing the hotrunner in the event of a machine fault or interruption of injection
operation if faults occur in the hotrunner system. However, this requires a connection between the controller and the
machine, e.g. via the signal cable 24V, Art No. 60070.019. Alternatively, or in addition, an optical or acoustic signalling
device can be connected to the connector 230V. The pin assignment is described in the "connector pin and terminal
assignment" chapter.
Release delay time
This is used for delayed switching off an error message in case of tolerance band deviations, in order to allow the hotrunner
system sufficient time to develop an adequately stable thermal condition after the heating up phase.
Limit values for tolerance band monitoring
In the tolerance band function there are two pairs of values available for the temperature and current monitoring. The inner
pair of values is intended for setting a warning limit if the process data only slightly differs from the set value specifications.
This enables problems to be detected early. The outer pair of values is used to generate fault messages if the current
process data deviates a lot from the specified set value. The warning and fault messages can be picked off via separate
outputs at the controller.
The settings act relative to the set value, i.e. if e.g. "Upper warning limit = 5°C" and "Lower warning limit = 5°C" a warning
message is issued for deviations of > ±5°C from the set value. The advantage here is that if the set temperature or various
settings of the different zones change the limit values do not have to be adjusted.
Drying mode (Level 1)
The starting operation of 230V heaters is always followed by a drying phase in order to remove any residual moisture in the
hotrunner system. The HPS-C control system operates in phase-fired mode, in order to avoid damage to the connected
heating loads. Compared to the pulse packet mode used in normal operation, in phase-fired mode smaller peak voltage
values are connected to the heating conductor so that arcing due to moisture can avoided. During the drying phase, all 230V
heaters are controlled with an adjustable maximum power (max. output power) for a minimum period (time for drying out)
