Siemens SINAMICS DCM User Manual

Descriptions of functions
10.29 Field reversal
SINAMICS DCM DC Converter
Operating Instructions, 12/2018, A5E34763375A
623
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
A
= 0 , then armature pulse inhibit (the drive then remains
in operating state ≥ o1.4)
– Inhibit field firing pulses (r52268=0 also initiates this)
– Wait until I
field
(r52265) < I
field min
(p50394)
– Wait time according to p50092[00] (0.0 to 10.0 s, factory setting 3.0 s)
– Open current 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 (r53195.0 = 1 or r53195.1 = 1)
– Reverse the speed actual value (with the exception, for p50083 = 3 ... EMF as speed
actual value)
– Wait time according to p50092[02] (0.0 to 10.0 s, factory setting 0.1 s)
– Enable field firing pulses
– Wait until I
field
(r52265) > I
field set
(r52268×p50398)
– 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".
Figure 10-85 Wait times for field reversal (parameter p50092)

Siemens SINAMICS DCM Specifications

General

Brand	Siemens
Model	SINAMICS DCM
Category	Media Converter
Language	English