Description Of Functionality; Operating Modes; Full Wave Mode Takt; Phase Angle Firing Var (Only Thyro-Ax 1A And 3A) - Advanced Energy THYRO-AX Manual

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6. DESCRIPTION OF FUNCTIONALITY

So that the Thyro-AX can be fitted to the desired application optimally it is equipped with a
variety of functions.
NOTE
OPTIMAL ADAPTATION OF THE Thyro-AX TO THE LOAD
With the selection of the operating and control mode the Thyro-AX can
be optimally adapted to the load.
NOTE
INDICATED TIMES
The times indicated in the following (duration), e.g. T
as the number of full waves. In this way the exact times for the frequency
actually used can be indicated.

6.1 OPERATING MODES

For optimal adaptation to different applications and manufacturing
procedures or varying electrical loads the appropriate operating mode
is selected by the user.

6.1.1 FULL WAVE MODE TAKT

The mains voltage is switched periodically depending on the defined
setpoint. In this operating mode almost no harmonics of the mains
frequency occurs. Whole multiples of network periods are always swit-
ched, which avoids continuous current elements. The full wave mode is
particularly suited to loads with heat inertia. Nevertheless, any occur-
ring feedback to mains (e.g. flickering) can be reduced to a negligible
amount with the aid of mains load optimization (see chapter Mains load
optimization).
6.1.2 PHASE ANGLE FIRING VAR (ONLY THYRO-AX 1A
AND 3A)
Depending on the defined setpoint the sinus wave of the mains voltage
is shifted with a larger or smaller trigger delay angle α. This operating
mode is characterized by its high control dynamics. In the case of phase
angle firing, harmonics of the mains voltage occur. These can be mini-
mized or considerably reduced by using various circuit types.
or SST are given
0

6.1.3. SST RAMP IN OPERATING MODE TAKT

After switching-on the power supply of the power controller (or after
reset or re-start of control electronics) , the switching-on of load starts
also in operating mode TAKT with Soft-Start ramp.
As soon as there is a set point at the power controller, this ramp
(default setting 120ms or 6 network periods) will be passed through
completely. Afterwards the device operates without ramp.
If Soft-Start time (SST) >= 600ms (30 network periods) is set, the power
controller (after turning on the power supply at the power controller
or after reset or re-start of the control electronics and followed by
connecting a set point) stays as long in SST ramp as the turn on time is
Ts > 600ms.
Afterwards the power controller operates without SST ramp, as be-
fore, even when Ts should be < 600ms. Background is the usage of a
transformer which can be adjusted perfectly to TAKT operation by the
settings and performance of SST ramp.

6.1.4 QUICK TAKT MODE QTM (ONLY THYRO-AX 1A)

Depending on the defined setpoint network half waves are switched.
Quick takt mode is a quick operating mode which offers a higher
dynamic than TAKT through its functioning in half wave switch principle.
QTM is suitable for ohmic loads. Continuous current elements are
avoided through the cycle duration. The quick cycle control is parti-
cularly suited to infra-red projectors as an alternative to phase angle
firing. When using multiple controllers there is the option of keeping
feedback to mains minimal through synchronization.

6.1.5 SWITCH MODE SWITCH

Depending on the defined setpoint whole network periods are always
switched. Then a signal can be used as control input for switch mode
operation. This means that on-off control can be realized. The feedback
to mains is very slight in this functionality. The switch mode is suitable
for ohmic load and transformer load.

6.2 SETPOINT PROCESSING

The Thyro-AX power controller has four setpoint inputs. All setpoint
inputs are electrically isolated from the mains. For the analog setpoints
1 and 2 individual control characteristics can be configured via the
parameters control begin and control end.
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