6 Special device functions
80 2011-07-01/00561073 [SCR Power Controller TYA202]
6.7 Current limiting
Factory setting No current limiting is activated.
v Chapter 5.1.2 „Power controller“
6.8 a start
Factory setting The phase angle of the first half-wave (a start) is not activated.
For transformer loads, the SCR power controllers are operated in burst-firing
mode with phase angle cut-back for the first half-wave.
The factory setting is an angle of 70°el. (electrical). This value can be adjusted
in the configuration level or operator level within the range of 0 ... 90°el.
6.9 Monitoring of the supply voltage drop
If the effective values of the analyzed half-waves diverge from each other by
more than 10%, an alarm message is displayed and the binary output for
multi-input fault warning is switched depending on the set control direction.
Immediate firing-pulse inhibit prevents connected transformer loads from de-
stroying the semi-conductor fuse due to a DC component.
If there are no more supply voltage drops, the firing-pulse inhibit is canceled
and the power controller continues operation e.g. with a soft start.
factory setting No monitoring is activated.
v Chapter 5.1.5 „Monitoring“
To Next Page
Loading...
