ABB ACS850 Firmware Manual page 20

20 Start-up
If the direction of rotation is selected as forward, check
that the actual speed
Encoder2 speed) is positive:
• If the actual direction of the rotation is forward and the
actual speed negative, the phasing of the pulse
encoder wires is reversed.
• If the actual direction of the rotation is reverse and the
actual speed negative, the motor cables are incorrectly
connected.
Changing the connection:
Disconnect the main power, and wait for 5 minutes for the
intermediate circuit capacitors to discharge. Do the
necessary changes. Switch the power on and start the
motor again. Check that the estimated and actual speed
values are correct.
If the direction of rotation is selected as reverse, the
actual speed must be negative.
Note: Resolver autotuning routines should always be
performed after resolver cable connection has been
modified. Autotuning routines can be activated by
adjusting parameter
signal freq, and then setting parameter
refresh to Configure. If the resolver is used with a
permanent magnet motor, an AUTOPHASING ID run
should be performed as well.
Stop the motor by pressing the STOP button.
Set parameter 19.02 Speed fb sel
speed.
If the speed feedback cannot be used in motor control: In
special applications parameter
must be set to True.
If there is an emergency stop circuit in use, check that the
circuit is functioning (emergency stop signal is connected
to the digital input which is selected as the source for the
emergency stop activation).
(01.08 Encoder1 speed
92.02 Exc signal ampl
90.10 Enc par
to Enc1 speed
40.06 Force open loop
Emergency stop circuit
01.08 Encoder1 speed
/ 01.10
01.10 Encoder2 speed
or 92.03 Exc
or Enc2 19.02 Speed fb sel
10.13 Em stop off3
10.15 Em stop off1
(emergency stop control
through fieldbus
main cw, bits 2...4)
or
02.22 FBA