8.2.1 Lock-down of the setpoint change
The operator interfaces of the BT 300 series can be locked using a jumper on the circuit board so that all
actualvalues,parameters,temperaturesandstatusescanbeviewed,butsothatitisnolongerpossibleto
adjustthesetpointsoftherespectivecontroller.
Jumper setting A: with setpoint change
Jumper setting B: without setpoint change
The operator interfaces are set to the jumper position A (with setpoint change) at the factory.
If operator interfaces are mounted in areas accessible to the public, i.e. on serving counters for the
sales personnel, the jumper position B should be selected (without setpoint change).
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