Tried disconnecting all comm devices and reconnecting all, flashed nST a couple times then back to err7.
There are numerous reasons why NST is present on the Altivar Drives.
Faults which cannot be reset automatically (continued) Fault Name Probable cause Remedy. .
fc-falcon">Altivar ® 71 Programming Guide.
. com). Cause: NST is not a fault but rather a status indicating the drive is in a freewheel stop condition.
. Cause: The drive status is showing NST on the main display and it will not clear. telemecanique.
Environment: All. Resolution: Here are a few possible causes: (A) If a directional run command (forward or reverse) is present on power up of the drive and the drive is set for 2C (2-wire) with [trn] transition.
Configuring communication fault management _____ 21 Diagnostics_____ 22.
177K subscribers. Index of parameter codes_____ 280.
The drive will not run. You will.
com Fax 919-217-6508 DANGER HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH • Read and understand this manual before installing or operating the Altivar 61 or 71 drive.
. Jun 29, 2022 · For the ATV61/71 VFD only: If the drive is running, and the voltage applied to the PWR input terminal drops below +19Vdc, the drive will stop and display NST. Motor Short Circuit: the motor insulation is already failing from the standing wave spikes. Parameter codes are displayed on the integrated 7-segment display terminal in round brackets. . se.
Cause: The drive status is showing NST on the main display and it will not clear.
5 IE 13 and above of the Altivar 61 firmware.
fc-smoke">May 19, 2022 · Altivar ATV31 and ATV312.