Mold-Masters TempMaster XL-2 Series, Руководство пользователя

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XL-2 Manual The Controller Cabinet
Revision 1.1
Mold-Masters
®
Page 13
The Controller Cabinet
The power supply to the control cabinet is via a strain-relief
mounted cable gland plug wired in star or delta configuration.
(Please check your specifications for details of which configuration
has been configured.) Connections to the tool are by looms
terminating type Contact 24pole connectors with 48pole housing
or their equivalents. There are normally two types of cables
supplied; a thermocouple connection, using type H-BE24BS and
typical connector and wiring details are shown in Appendix A.
An alarm output option is available for extending the alarm, or,
perhaps, inhibiting the injection process.
Controller Cards
The controller card is dual-zone modular that provides real time
temperature control.
Each card has three main components:
•
thermocouple amplifiers,
•
CPU,
•
multi-voltage output triacs.
Thermocouple Amplifiers
The thermocouple amplifiers have preset responses for both J and
L type thermocouples. The selection of sensor type can be done
in Program Menu; this in turn sets the differential amplifier to
match the selected thermocouple type.
Central Processor Unit (CPU)
The CPU provides the following facilities:
•
closed and open loop control of the zones,
•
processes thermocouple and current readings to show on
display,
•
checks for alarm conditions, including excess current, incorrect
thermocouple wiring, zone over temperature condition, low
impedance between heater and ground, and generates alarm
information for the display screen and alarm relay,
•
controls the output power to the on-board triac using a number
of self-tuning algorithms
•
controls a row of diagnostic status indication
The card requires no analogue calibration and is ready for use
once set up from the display console.
Output Triacs
The controller card has an on-board triac that is capable of controlling
heating loads of up to 16 Amps peak.