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Caledon Controls Ltd
LSC2A Staging / Load Sequencing Controller
The LSC2A load sequencing controller is designed for use with a large process heating system which is split into several banks of heaters, all of which apply heat input to the same heating load. The staging controller balances the required heating demand by switching on the number of stages (heater banks) which most nearly match the demand, and modulating one additional stage to make up the difference. Versions are available with combined relay + logic outputs and all logic outputs. A single analogue output is also provided. Relay + logic types are used with contactor stages + 1 modulating thyristor stage; all logic outputs are used when all the stages are controlled by thyristors. The analogue output may be used to drive one modulating thyristor which accepts a standard analogue input signal if preferred.
The staging technique provides the following advantages:-
The LSC2A controller is based on our successful LSC2 controller. It includes additional features which have been incorporated over time in various versions of the LSC2 controller; in particular a digital enable input and the ability to change operating modes between standard burst fire and single cycle burst fire using a digital input.
More detailed product information is available on our downloads page
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