- Difference description concerning the 9300 vector 0.37...90 kW from V6.3 to V7.1

Function extensions:
- Overvoltage OU; Avoiding overcurrent OC1 after pulse re-enabling
- Reducing the current consumption by means of C0913 when synchronising during flying restart circuit and/or recovery from a pulse inhibit caused by OU
- Flying restart in inverse direction; Selecting the direction of the flying restart via C0140
- Flying restart circuit; Minimum time required for controller or pulse inhibit before starting the flying restart circuit via C0132
- Flying restart circuit; Decay time for the synchronisation after a flying restart circuit via C0133
- Boost correction during V/f characteristic control
- Motor magnetising current for vector control without feedback
- Earth fault detection OC2; Deactivation via C0574
- Root calculation in function block SQRT1; Run time
- Current controller; Speed adaptation of the integral action time via code C0079
- Menu structures adapted

Eliminated function restrictions:
- DCALC: Error when calculating the diameter (elimination)
- Motor jerks when being operated in inching mode (elimination)
- EER trip: Faulty activation immediately after mains connection (elimination)
- Polarity change at the digital input DIGIN6 (elimination)
- QSP is not displayed when controlling the drive with CAN-IN1 (elimination)
- MCTRL-M-ADD and MCTRL-N/M-SWT in V/f characteristic control (elimination)
- Flying restart circuit: MCTRL-NACT (C0051) deviates from the current motor speed (elimination)
- Overvoltage OU; Switch-off threshold too low (elimination)
- Communication interruption between keypad and drive controller (elimination)
- Flying restart circuit sporadically does not find the drive speed
- Integrators INT1 and INT2; Indication of texts (elimination)
- Current oscillations during vector control with feedback (elimination)

- Rotary motion after deactivating QSP or CINH (elimination)
- Magnetisation in the case of vector control with feedback (elimination)
- Behaviour during quick stop (QSP) with faulty feedback (elimination)
- Speed fluctuations after recovery from OU (elimination)

Attention: Integral action time of the maximum current controller in V/f characteristic control (C0006 = 5): Compared with the previous versions ≤ V6.3 the controller-internal normalisation of the integral action time of the current controller in V7.1 is reduced by factor 4. Thus, the current controller in V7.1 responds more dynamically. A current oscillation may occur when being operated at the maximum current limit.
Short-term remedial measure in V7.1: Prolong the integral action time of the maximum current controller by factor 4 under code C0076. In software ≥ V7.2 this incompatibility has been eliminated. This means that the firmware versions V6.3 and V7.2 are compatible concerning this point.
A detailed description is provided in Service Message No. 39/2005.

Information taken from Service Message No. 38/2005.