www.baldormotion.com5-2 Input / Output MN19195.2 Analog I/OThe MicroFlex provides as standard:H 1 analog input on the connector block X3 (demand input)5.2.1 Analog input - X3 (demand)Location Connector X3, pins 12 & 13(Mating connector: Weidmüller Minimate B2L 3.5/14)Name AIN0Description Single ended or differential input.Common mode voltage range: ±10VDC.Resolution: 12-bit (accuracy ±4.9mV)Common mode rejection: 40dBInput impedance: >30kΩSampling interval: 125μsThe analog input can be connected as either a differential or a single ended input as shown inFigure 25. The analog input is not optically isolated from internal power rails, so care must betaken to avoid earth/ground loops and similar associated problems. The input buffers providelow pass filtering of the applied voltage. To minimize the effects of noise, the analog inputsignal should be connected to the system using an individually shielded twisted pair cable withan overall shield. The overall shield should be connected to the chassis at one end only. Noother connection should be made to the shield.AIN0-AIN0+10kLM358Internal referenceMintADC.0MicroFlex10k30k30k+15V-15V10k-+10kLow passfilter & levelcorrection47pF30k30k47pF1nF1213AGND 14Figure 24 - AIN0 analog input (demand) circuitWhen the MicroFlex is connected to Mint WorkBench, the analog input value (expressed as apercentage) can be viewed using the Spy window’s Monitor tab. Alternatively, the commandPrint ADC.0 can be used in the command window to return the value of the analog input.See the Mint help file for details.1312