F07085 — Drive: Open-loop/closed-loop control parameters changed

F07085 is issued when the drive has had to change open-loop/closed-loop control parameters itself. This happens in one of four situations: values exceeded their dynamic limits as a result of other parameters; the hardware signalled that it does not have certain features, so the parameters cannot be used; a value had to be estimated because the thermal time constant is missing; or motor temperature model 1 was activated because thermal motor protection is missing.

The number of the parameter the drive changed is stored in the fault value: r0949, interpreted as a decimal number, and the message text displays it as Parameter: %1. The manual describes this message for S120/S150 and for G130/G150 with the same causes; its cross-reference list names p0640 (current limit), p1082 (maximum speed) and p1300 (open-loop/closed-loop control operating mode).

• The parameters exceeded their dynamic limits as a result of other parameters.
• The hardware has detected that it does not have certain features, so the parameters cannot be used.
• A value had to be estimated because the thermal time constant is missing.
• Motor temperature model 1 was activated because thermal motor protection is missing.

1. Read the fault value in r0949 as a decimal number — it is the number of the parameter that the drive changed (the message text shows it as Parameter: %1).
2. Match the number against the decoding below to see which automatic adjustment took place.
3. Do not re-enter or correct the parameters: per the manual, they have already been correctly limited.

The drive puts the number of the changed parameter into the fault value; r0949 shows it interpreted as a decimal number.

• 340 — the drive automatically calculated the motor and control parameters (p0340 = 1) because vector control was subsequently activated as configuration (r0108.2).
• 611 — the time constant for thermal motor model 1 was estimated.
• 612 — thermal motor model 1 was activated (p0612.0 = 1).
• 1800 — a more favorable pulse frequency was preassigned (this case is listed only in the S120/S150 description).

• r0949 — read the fault value here as a decimal number; it contains the number of the parameter that the drive changed.
• p0340 — with fault value 340, this is the automatic motor and control parameter calculation the drive ran (p0340 = 1) after vector control was activated as configuration.
• r0108 — r0108.2 shows vector control active as configuration, the condition behind fault value 340.
• p0612 — with fault value 612, the drive itself set p0612.0 = 1 to activate thermal motor model 1; fault value 611 concerns the estimation of this model's thermal time constant.
• p1800 — with fault value 1800, the drive has preassigned a more favorable pulse frequency here; the manual's cross-reference list calls p1800 the pulse frequency setpoint.

The drive does not trip on this message — no protective shutdown is triggered — and no parameter changes are needed on your side: Not necessary. It is not necessary to change the parameters as they have already been correctly limited. Once you have noted which parameter was changed, acknowledge the fault immediately; the acknowledgment requires a POWER ON.