ICC
101
NSOLL_A: The inverter reference speed setpoint is a normalized value. The interface card applies the
conversion indicated in Equation 8 in order to determine the appropriate speed command to be written to
function code S01 (frequency command (p.u.)).
0x4000
Frequency
Max
NSOLL_A x
Command
Speed
=
Equation 8
NIST_A: The inverter operating actual speed is a normalized value that is calculated from inverter
function code M06 (output frequency (p.u.)). The interface card applies the conversion indicated in
Equation 9 in order to determine the appropriate operating speed actual (normalized).
Frequency
Max
0x4000
x
Speed
Running
NIST_A
=
Equation 9
The “Max Frequency” term which appears in Equation 8 and Equation 9 is obtained from the setting of
inverter function code F03 (maximum frequency 1).
A normalized value of 0x4000 corresponds to 100% of the maximum frequency. A positive normalized
value indicates forward rotation and a negative normalized value indicates reverse rotation.
The value of F03 is read by the interface card only at boot-up. If the value of this function
code is changed, then the interface card must be rebooted in order for it to read the new
value from the inverter.
10.5.5.4
PROFIdrive State Diagram
The state diagram is displayed in Figure 74.
Figure 74: PROFIdrive State Diagram