Vers. No. 6.152 Released: 25/04/20174 Connecting the modules → Q.bloxx A102: Connecting sensors and I/OIMPORTANTVoltages which exceed the admissible limits produce incorrectmeasurement data, because the inputs are protected againstovervoltages and limit the input voltage.Fig. 4-29 A102, measurement of voltage, Plug 2.4.9.2 CurrentA shunt resistance of 50 is integrated into the Q.bloxx ModuleA102 for current measurement. This facilitates the measurementof currents of up to 25 mA via Plug 2. For higher currents use avoltage measurement and an external shunt; refer to Section 6.5,page 147.Fig. 4-30 A102, measurement of current, Plug 2.4.9.3 Full and half-bridge transducersWith (resistive) full bridges (strain-gauge full bridges) all connec-tions are occupied. If the sensor has no sensing leads, you specifythis during the module configuration (Type column). With halfbridges the side drawn in dashes and the connection 4 are omit-ted.The bridge excitation voltage is switched via software between1 V, 2.5 V, 5 V and 10 V.Fig. 4-31 A102, measurement w ith full and half bridges, Plug 2.U8 (+)7 (GND)I9 (+)7 (GND)3(4)1 (+)256 (–)
