A4NFF: AUMATIC ACExC 01.2 positioner and position/torque feedback signal 0/4 - 20 mA (MWG in actuator), reversing contactors MODE, CLOSE, OPEN, STOP, EMERGENCY, I/O (24 V DC), 6 programmable output contacts, Foundation Fieldbus, AUMA power class A1 - A3
A4NMB: AUMATIC AC 01.2 positioner and position/torque feedback signal 0/4 - 20 mA (MWG in actuator), reversing contactors MODE, CLOSE, OPEN, STOP, EMERGENCY, I/O (24 V DC), 6 programmable output contacts, Modbus RTU, AUMA power class A1 - A3