Modulating stage/ setpoint ramp-up and limitation

The “ModStage” output is limited between minimum and maximum values, as defined by parameters STM-06 and STM-07. An increasing modulating stage signal is always ramped up, as defined by parameter STM-08 and shown in the next figure. There is no ramp function on decreasing the modulating stage signal.

ATTENTION: in case of setpoint control, take care to change the values of the minimum and maximum and consider the fact that the engineering unit is °C. In case of setpoint control we recommend to set the output signal ramp to the highest value STM-08 = 2000 %.

Fig. 6.   Modulating stage setpoint ramp-up

Table 12.   Parameter List

Description

Value Range

Default Value

Unit

STM-06: minimum output modulating stage

0...100

0

%

STM-07: maximum output modulating stage

0...100

100

%

STM-08: maximum raise per minute

1...2000

25

%

SPO-01: setpoint low output

0...200

20

°C