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DIGITAL INDUSTRIAL CONTROLLER
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Adjustable parameters:
D: Pitch of the setpoint ramp
Figure 16: Ramp function
Function block 7: Setpoint limiting
A low and a high limit can be entered for the setpoint. The setpoint can only be
adjusted within this range.
Adjustable parameters:
SPh: High setpoint limit
SPl: Low setpoint limit
Function block 8: Alarm, absolute
With this function, the alarm relay is operated if the controlled variable PV exceeds
an upper limit or falls below a lower limit. The limits can be adjusted within the
scaling range PVl .. PVh, or within the measurement range of the temperature
inputs.
High limit violation: Alarm via relay 3
Low limit violation: Alarm via relay 4
Adjustable parameters:
PV+ : High alarm limit
PV- : Low alarm limit
Hy : Switching hysteresis
∆SP
D=∆SP / ∆t
∆t
SP
t
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