SC_TFV_M

The Irinos Box SC-TFV is suitable for connecting 8 inductive probes. Each Irinos Box is optimised for a specific type of probe. The supported probe type can be identified from the labelling on the front panel.

Alternatively, each input can also be individually configured to measure analogue signals of ±10 V DC (not available for Mahr/Feinprüf).

The configuration of each channel is indicated by an LED next to it:

oGreen LED -> Probe input

oOrange LED -> Analogue input ±10V

Switching between the probe input and the analogue input is carried out via the relevant DLL interface.

With the NmxDLL, the switch to analogue input is performed via NMX_ChannelSetConfig_1, e.g.:

char acStrTx[] = "#AIN10D;1#";

NMX_ChannelSetConfig_1(pHandleNmx, 2, acStrTx, strlen(acStrTx), acStrRx, sizeof(acStrRx), &ulRxSize);

And, conversely, switching to the inductive probe:

char acStrTx[] = "#PROBE;1#";

NMX_ChannelSetConfig_1(pHandleNmx, 2, acStrTx, strlen(acStrTx), acStrRx, sizeof(acStrRx), &ulRxSize);

With the MscDLL, the switch to analogue input is performed using opcode 0x09 and the MSC_WriteCommand function:

pSndBuffer = „#T8;AIN10D;1#“; // Beispiel für Taster 8 à T8 an Taster anpassen

MSC_WriteCommand(pHandle, 0x09, SndBufferSize, pSndBuffer, RcvBufferSize, pRcvBuffer, pBytesReceived, Timeout);

And, conversely, switching to the inductive probe:

pSndBuffer = „#T8;PROBE;1#“;

MSC_WriteCommand(pHandle, 0x09, SndBufferSize, pSndBuffer, RcvBufferSize, pRcvBuffer, pBytesReceived, Timeout);

Probe supply / Sine oscillator

Inductive probes require a sine excitation signal as their supply signal. This is generated by a sine oscillator in the Irinos box. All measurement inputs on an Irinos box share a common sine oscillator. To ensure a particularly accurate measurement result, the signal is generated in such a way that it is virtually free of DC components.

In the event of an overload or a short circuit in the sine wave excitation signal – e.g. due to a faulty probe – the sine oscillator is automatically switched off and this event is reported in the following ways:

oThe text ‘OSC’ is displayed on the 7-segment display.

oVia the measurement value manipulation or via the hardware status readable by the measurement computer software.

The Irinos Box periodically checks whether the short circuit has been rectified. If so, the oscillator restarts automatically.

Measurement

All measurement inputs are sampled synchronously (no multiplexing). The measurement method takes the complete measurement signal into account (i.e. integrative measurement). Compared with the commonly used 1-point or 2-point sampling, this method has the advantage of being much less susceptible to interference. The analogue filter used in this measurement method is designed to suit the mechanical properties of the respective probe.

For technical reasons, different input channels never produce exactly the same measured value for an identical input signal. To enable the input channel to be changed or the Irinos box to be swapped without any problems, the measurement inputs are therefore digitally pre-calibrated at the factory. The calibration is carried out in such a way that the measured value is -32,000 at maximum negative nominal stroke, 0 at the centre of the probe, and +32,000 at maximum positive nominal stroke.

Digital value	Stroke with Tesa Halfbridge GT21	Stroke with Tesa Halfbridge GT61	Stroke with Solartron AX/1/S	Stroke with Mahr 1301	Analogue Input
- 32.000	- 2000 µm	- 5000 µm	- 1000 µm	- 1000µm	-10V
0	0 µm	0 µm	0 µm	0µm	0V
+32.000	+ 2000 µm	+ 5000 µm	+ 1000 µm	+ 1000µm	+10V

Please also bear in mind the specific aspects of the manipulation of measured values.

Connector pinouts

➔ Connector type M16 5-pin 270° female

One inductive probe can be connected to each connector. The pin configuration complies with the standard for the respective probe.

TESA Halfbridge

Pin	Description	Note	Used with probe	Used with analogue input
1	PHASE1	Together with PHASE2, it forms the sine wave supply signal (sine wave oscillator)	Yes	No
2	GND	Ground reference	Yes	Yes
3	MT_IN	Measurement input (Probe signal)	Yes	No
4	AIN	Analogue Input ±10V	No	Yes
5	PHASE2	Together with PHASE1, it forms the sine wave supply signal (sine wave oscillator)	Yes	No

Solartron LVDT

Pin	Description	Note	Used with probe	Used with analogue input
1	PHASE1	Together with PHASE2, it forms the sine wave supply signal (sine wave oscillator)	Yes	No
2	PHASE2	Together with PHASE1, it forms the sine wave supply signal (sine wave oscillator)	Yes	No
3	AIN	Analogue Input ±10V	No	Yes
4	MT_IN	Measurement input (Probe signal)	Yes	No
5	GND	Ground reference	Yes	Yes

Feinprüf / Mahr