91
Bit
Value
Significance
Description
0
Operation Disabled
Running disabled
3
1
Fault Present
Inverter tripped. Refer to parameter 03.01.
0
No Fault
No trip present. Refer to parameter 03.01.
4
1
Coast Stop Not Activated
Follows STW1 bit 1, ON2 active
0
Coast Stop Activated
Follows STW1 bit 1, OFF2 active
5
1
Quick Stop Not Activated
Follows STW1 bit 2, ON3 active
0
Quick Stop Activated
Follows STW1 bit 2, OFF3 active
6
1
Switch ON Inhibited
Not ready to run command ON
0
Switch ON Not Inhibited
Ready to run command ON
7
Not Used ---
---
8
1
Speed Within Tolerance
Actual value equals the reference value and is within
the tolerance (at least 99% of the frequency
command). Refer to parameters 00.04 and 01.01.
0
Speed Out Of Tolerance
Actual value differs from the reference value or is
outside of the tolerance (less than 99% of the
frequency command). Refer to parameters 00.04 and
01.01.
9
1
Control Requested
Control by PLC is enabled. Refer to parameters 22.03
and 20.02.
0
No Control Requested
Control is not possible by the controller. Refer to
parameters 22.03 and 20.02.
10
1
Frequency Reached Or
Exceeded
The actual value
≥
max reference value. Refer to
parameters 01.01 and 30.01.
0
Frequency Not Reached
The actual value < max reference value. Refer to
parameters 01.01 and 30.01.
11 - 15
Not used
---
---
9.5.5.3
PROFIdrive reference speed setpoint and actual speed
The speed setpoint value, NSOLL_A, is the commanded speed reference (normalized) sent from the
controller to the inverter. Similarly, the speed actual value, NIST_A, is the actual operating speed
(normalized) of the inverter sent back to the controller. As the inverter natively operates in units of Hz,
the following conversion equations are applied within the interface card:
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
parameter 00.04 (frequency command).
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
parameter 01.01 (output frequency). 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 parameter 30.01 (maximum frequency setting).
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 30.01 is read by the interface card only at boot-up. If the value of this
parameter is changed, then the interface card must be rebooted in order for it to read the
new value from the inverter.