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 |