Alteration Of The Current Limit Imax, As A Function Of The Voltage On Terminal 9; Setting The Phase Angle For The First Half-Wave - JUMO B 70.9040 Operating Instructions Manual

5 Commissioning
5.3.1 Alteration of the current limit Imax, as a function of the voltage on
Terminal 9

5.4 Setting the phase angle for the first half-wave

H
36
With an internal limit of, for example, I
variation is only 0 to 8V.
In the mode "burst-firing with phase-angle controlled start" the thyristor power
unit retards the firing point for the first half-wave after the start in burst-firing
mode.
The factory setting is an angle α = 90°(electrical). This value can be altered
over the range α = 0 — 90°by the trimmer (10) "angle set".
The factory setting will be satisfactory in most cases.
If it is nevertheless necessary to make an adjustment, then the
minimum switch-on current at the start of the burst is the criterion
for setting the angle α.
Counter-clockwise (left) = advance the firing angle α
Clockwise (right) = retard the firing angle α
= 0.8 x I , the external range of
max Thy
Power units 05.01