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<strong>Manual</strong> – TopCon TC.GSS<br />

Analogue interface<br />

Power limit and internal resistance simulation<br />

7.2.5. Power limit and internal resistance simulation<br />

If this set value setting is not required, these inputs can be left unconnected<br />

or connected to the analogue reference earth.<br />

Power limit<br />

set value 10kΩ<br />

Internal<br />

resistance<br />

set value 10kΩ<br />

Standard input values<br />

1<br />

6 +10VDC<br />

14 PREF<br />

15 RREF<br />

1 AGND<br />

X105<br />

Shieldearthed<br />

Power limit<br />

set value<br />

Internal<br />

resistance<br />

set value<br />

6 +10VDC<br />

2011-10-18 124 / 298 V00.05b<br />

=<br />

=<br />

2<br />

7<br />

14 VREF<br />

X105<br />

15 IREF<br />

1 AGND<br />

Shield earthed<br />

Fig. 63 Analogue specification of power limit and internal resistance.<br />

Only positive analogue set values can be specified with<br />

potentiometers (0 … 10 KΩ) -1-.<br />

Analogue set value specification using external sources -2-<br />

Pin Analogue control Function<br />

14<br />

15<br />

Power limit PREF<br />

10…0 V or<br />

0 … 10 KΩ<br />

Internal res. RREF<br />

0…10 V or<br />

0 … 10 KΩ<br />

Output power Pmax= = Pnom * [0… 100%]<br />

where PREF ≙ [0… 100%]<br />

Internal resistance RREF = 0…1000 mΩ<br />

Table 45 Factory pin definition and value range for the manipulated values PREF and RREF<br />

Only positive set values can be specified with a resistor (0 … 10 KΩ).<br />

Internal resistance extension (option)<br />

With an optional internal resistance extension, the same pin definition<br />

and specification values apply.<br />

For the power limit the specification is inverted!<br />

In the case the power limit input voltage PREF = 0 V, there will not be<br />

any limiting of the maximum power, i.e. the power limit is set to the (full)<br />

nominal power. For this reason the power limit is set correspondingly on<br />

operation via pin 14 (PREF).<br />

Changing the power input to bipolar inputs<br />

The output power can be changed to bipolar inputs using a configuration flag.<br />

Power limitPREF:-10 V… 0 … 10 V ; PREF ≙ [-100% ... 0 … 100%]<br />

If necessary, please contact Regatron support.

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