Chapter 2 Analog Input Module AS04/08AD-A AS04AD-A External wiring AG 4-wire: voltage input Shielded cable *1 -10 V~+10 V CHX *6 1 M +2 4V 0V + - *3 CH1 *4 2_ 4-wire: current input FE CHX *6 A G +24 V -20 mA ~+2 0 mA + Shielded cable *1 * 2 CH2 0 V - *4 2-wire: current input 2-wire: current input FE +2 4V 4 mA ~+2 0m A Shielded cable *1 CHX * 6 A G + - * 2 1M CH3 0 V *4 3-wire: voltage input FE +2 4V -1 0 V~+10 V Shielded cable *1 CHX *6 A G 0 V CH4 * 4 FE 3-wire: current input -2 0m A~+20 m A Shielded cable *1 CHX * 6 A G +24 V + *2 V 1+ I1 + 25 0 1M CH1 0V - V I1 - 1M FE *4 *5 24 V 24 VDC DC/DC +15 V Con ve rt e r A G -15 V *1.
Use shielded cables to isolate the analog input signal cable from other power cables. *2. If the module is connected to a current signal, the terminals Vn and In+ (n=1–4) must be short-circuited. *3. If variability in the input voltage results in interference within the wiring, connect the module to a capacitor with a capacitance between 0.1–0.47 μF and a working voltage of 25 V. *4. Connect the shielded cable to the terminal FE. *5. Connect the terminal to the ground terminal. *6. Every channel can operate with the wiring presented above. 2-21 V I+ I1 + 2 5 0 1M VI 1- V 2+ I2 + V I2 - 1 M V 3+ 25 0 1 M I3 + V I3 - + - V4 + 25 0 1 M I 4+ V I4 - 0 V