1747-L20G

The Allen-Bradley 1747-L20G is equipped with a power supply and a fixed number of I/O. This module consists of a processor with an instruction capacity of 1,024 (1K). This module operates at a frequency of 47-63 Hz. The Allen-Bradley 1747-L20G has a line power of 24 Volts DC. The 1747-L20G has an input of 24V DC sink. The output of this module is a DC Transistor Source. This module's input has an ON-state voltage of 10-30V DC. The OFF-state voltage of this module's input is ranged from 4-5V DC. The nominal output current of this module's input is 20 mA at 24V DC (for input 0 only) and 8 mA at 24V DC (all other inputs). The turn-ON time of this module's input is 8 milliseconds (maximum). The turn-OFF time of this module's input is 8 milliseconds (maximum). This module's input has Maximum Off-State Current of 1 mA. The Allen-Bradley 1747-L20G also comes with a high-speed counter. Counters are able to calculate at speeds up to 8 kHz. You have the option of using input 0 as a normal input or as a high-speed counter. To accommodate this dual function, the input comes with a selectable jumper filter. You must cut the jumper for high-speed counter usage. Shielded cables are recommended to reduce noise at the input. Always turn off the power to the controller before you insert or remove a memory module. This prevents possible damage to modules and unwanted processor errors.