The 1395-B75-D3-P11-P51 Digital DC Drive by Allen-Bradley is a microprocessor-based DC digital drive with a 75HP to 100HP dynamic breaking contactor, which provides direction and speed control for a wide range of industrial motors. The 1395-B75-D3-P11-P51 is a regenerative drive with a 24V DC discrete adapter board option and multi-communication board option, in the 1395 digital drive series, which has an operating voltage of 460V AC (3-phase) at 50-60Hz, and a voltage tolerance of -+10%. The drive has a DC output voltage of 500V DC, with a filed voltage range of 240V DC to 300V DC, and it has a field output current of 20A. The 1395-B75-D3-P11-P51 has a field control speed range of 6:1 with an encoder, using a 6-pulse output waveform, and it has a speed regulation of 0.01% of the set speed over a 10: 1-speed range and 0.001% of the top speed over 100: 1-speed range. The drive has programmable functional modes (enable, time delay, and power on standby), and it has a controlled current output of 150% for 1 minute, 200% for 10s, and 260% for 5s.

The 1395-B75-D3-P11-P51 has an integral RS-422 external communication port for programming terminals, and it has a normally-open relay contact with 0.5A contact rating at 120V AC, which opens when the drive faults or de-energizes, and it opens when the drive is ready for operation. The drive has a discrete adapter Port A option, with 4 optically joined 24V DC inputs, with preconfigured signals and it provides means for external control via relays, switches, and push buttons. It discrete adapter Port A option also allows for the conversion of 12-bit analog signals to digital signals, via its -+10V DC analog inputs, and also allows for the conversion of digital signals to analog signals using it 11-bit analog output. The 1395-B75-D3-P11-P51 interfaces with the Allen-Bradley PLC controllers and other devices with serial communication capability by using its multi-communication board (Port Option B), and unlike the discrete adapter board, the multi-communication board is not preconfigured, and will, therefore, require manual configuration. The drive has an operating temperature range of 0-55°C (32–130° F), at relative humidity limits of 5 to 95% without condensation, and it has a maximum operational height of 3,300ft, without de-rating.