The Allen-Bradley 1388B-AV40 is a servo controller module from the Bulletin 1388B series, specifically designed as a DC servo controller compatible with Allen-Bradley's 1388 Anti-Backlash system. This Series B open-frame controller comes with an internal heatsink. It delivers a nominal output voltage of 150VDC, a continuous current rating of 40 Amperes, a peak output current of 100 Amperes, and a power output of 3.0 kW with a minimum load inductance of 0.4 milliHenry.
The 1388B-AV40 operates with a 120 VAC, 3-phase power supply at 50/60 Hz and requires an input current of 20 Amperes. Additionally, it has a VCT of 35.5 VAC (single-phase) at 50/60 Hz with a current of 1.6 Amperes. The maximum short circuit current for this controller is 1600 Amperes (rms). For power connections, use 8-18 AWG copper wires with a 75°C insulation rating and apply 32 lb-in of tightening torque for terminals 1-6, and 10-20 AWG copper wires with the same insulation rating and 18 lb-in of tightening torque for terminals 7-12. Control wiring should use terminals TB1 and TB2 on the controller’s PCB with 12-22 AWG wires and 75°C insulation rating, applying 5 lb-in of tightening torque.
Front-panel LED indicators provide status information, including motor overload, undervoltage, overvoltage, current foldback, overtemperature, transistor overcurrent, and module enabled. This controller aids in enhancing servo motor operation with features like speed-dependent current limit, electronic motor thermal overload detection (MODR), power amplifier inverse time overload detection, and power bus over/under voltage detection, as well as logic supply under voltage detection.
The 1388B-AV40's output voltage is 150 VDC, delivering a continuous current of 40 Amperes and a peak current of 100 Amperes. It includes a 1 Ohm, 100 Watt internal dynamic braking resistor and offers a continuous power output of 3 kW, peaking at 15 kW. The internal shunt regulator handles 51 Watts, and the circuit breaker's interrupt rating is 5000 Amps. The unit boasts a form factor of 1.03 or less, can adjust peak current limit between 10 to 250% of rated current, and operates at 85% drive efficiency.
Operating conditions for the 1388B-AV40 include an ambient temperature range of 0 to 60°C, relative humidity of 5 to 95%, and a maximum operating altitude of 1000 meters. Weighing 10.4 kilograms (23 pounds), this controller is built to withstand industrial environments.
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