Functions
7100.006514_Bus description_PSD4xx_EC_F_EN
31
2022-12-12
4.6
How to respond if drive is turned manually (adjustment function)
If the PSD4xx is rotated in the opposite direction from the reference loop
– when at a standstill,
after a correctly completed positioning run and the release bit (bit 4 in the control word) as well as
the readjustment bit (SDO #2047) are activated
– it will again attempt to run to the previously sent
target value (adjustment).
The device does not attempt to adjust if rotated in the direction of the reference loop, it will merely
set bit 11 of the status word
(“Manual rotation”) and reset bit 0 (“Target position reached”). If the
reference loop is deactivated (SDO #201F = 0), the drive will adjust in both directions.
Note:
The device does not attempt to adjust if rotated in the direction of the reference
loop, it will merely set bit 11 of the status word
(“Manual rotation”) and reset bit 0 (“Target
position reached”).
Note:
If the drive continually loses its position when at a standstill, it will attempt to adjust
whenever its actual position just leaves the positioning window (provided that all of the
above-mentioned conditions are met). At this time, the motor voltage must be within the
permissible range (i.e. bit 4 is set in the status word).
No adjustment will start if the motor voltage is not in the permissible range.
Instead, bits
10 (“Positioning error”) and 13 (“Power was unavailable to motor”) will be
activated.
If the motor voltage only returns to the permissible range after leaving the positioning
window, no new adjustment attempt will start. This prevents a situation in which the drive
suddenly starts to move when the motor voltage is switched on.
If a positioning run or manual run is a
borted while in progress by a stop command (“Release” bit in
control word to 0), the drive will only adjust when a new run command is sent and completed
correctly.
Deleting the release bit and/or adjustment function can completely prevent the adjustment
process.
