Santerno Sinus Penta - Digital PID Regulator; Setting Two Alternative Command Sources and Reference Sources

PROGRAMMING GUIDE
SINUS PENTA
29/486
4.8. Prohibit Speeds
Prohibit speeds are speed ranges corresponding to mechanical resonance frequencies. They prevent the drive from
running at the preset speed ranges.
See the MULTITORQUE MENU for more details.
4.9. Digital PID Regulator
The Sinus Penta drive is provided with a digital PID (proportional, integral, derivative) regulator that can be used to
implement the following:
• Analog output
• Main reference of the drive (Speed/Torque reference)
• Correction of the main reference
• Correction of the output voltage (only for Volt/Freq IFD control)
See the PID PARAMETERS MENU and the PID CONFIGURATION MENU for more details.
4.10. Bridge Crane Application
For lifting applications, such as a bridge crane, it may be useful to consider the actual time required to release the safety
electromechanical brake (the delay between the electrical command and the actual opening of the brake) and the
closure of the electromechanical brake.
For a detailed description of the benefits offered by the parameters relating to lifting applications, see the BRIDGE
CRANE MENU.
4.11. Setting Two Alternative Command Sources and
Reference Sources
You can set a digital input as a selector switch allowing selecting two alternative control sources and reference sources.
Example:
A selector switch is required to select control mode B (the drive references and commands are sent via fieldbus) and
control mode A (the drive reference is sent via AIN1 analog input and commands are sent via keypad).
The following parameters shall be set up accordingly:
C179 MDI for source selection= MDI6
C140 Selection of control source n. 1 = Keypad
C141 Selection of control source n. 2 = Fieldbus
C143 Selection of reference n. 1 = AIN1
C144 Selection of reference n. 2 = Fieldbus
When MDI6 digital input in the terminal board is open (terminal 19), the command sources and reference sources n. 1
are selected (Keypad and AIN1 analog input, control mode A). When MDI6 is closed, the command sources and
reference sources n. 2 are selected (Fieldbus, control mode B).
CAUTION
In the example above, if C179 = Disable
, the OR logic for the Keypad and Fieldbus is
considered, whereas the Fieldbus and AIN1 control sources
are considered as summed
up.
As an alternative to parameter C179, parameters C179a and C179b allow setting two digital inputs as independent
selectors for the commands and the reference.
See also parameters C179, C179a, C179b in the DIGITAL INPUTS MENU.