Siemens SINAMICS DCM Manual page 586

5. Sequence to change over to the original field direction
Precondition: The present field direction does not match the field direction requested
using the function "Direction of rotation reversal using field reversal"
– Wait until armature current I
– Inhibit field firing pulses (r52268=0 also initiates this)
– Wait until I
– Wait time according to p50092[00] (0.0 to 10.0 s, factory setting 3.0 s)
– Open actual field contactor (r53195[0] = 0 or r53195[1] = 0)
– Wait time according to p50092[01] (0.0 to 10.0 s, factory setting 0.2 s)
– Control new field contactor (r53195[1] = 1 or r53195[0] = 1)
– Reverse the speed actual value (with the exception, for p50083 = 3 ... EMF as speed
– Wait time according to p50092[02] (0.0 to 10.0 s, factory setting 0.1 s)
– Enable field firing pulses
– Wait until I
– Wait time according to p50092[04] (0.0 to 10.0 s, factory setting 3.0 s)
– Armature firing pulses are again possible
6. The drive is in operating state o7.2
Acceleration is possible in the original direction of rotation when acknowledging using an
external "Stop" and "Switch-on".
Please also read the note at the end of the chapter "Direction of rotation reversal using field
reversal"
SINAMICS DCM DC Converter
Operating Instructions, 02.2015, A5E34763375/RS-AA/001
in operating state ≥ o1.4)
(r52265) < I
field
actual value)
(r52265) > I
field
ac.maher.co.ir
= 0 , then armature pulse inhibit (the drive then remains
A
(p50394)
field min
(r52268×p50398)
field set
Descriptions of functions
10.28 Field reversal
587