ASDA-B3 Wiring C4: pulse input (line driver) can only be used with 2.8V - 3.6V power systems. Do not use it with 24V power. Servo drive Controller 3 Max. pulse input frequency: 4 Mpps SIGN+ 39 51 Ω 4 Mpps SG Note: 1. This is supported by the B3-L model and the B3A series only. 2. The pin definition of the communication type models is different from that of the L model. Communication type model pins: SIGN+ (23), SIGN- (24), PULSE+ (25), and PULSE- (26). 3-51 SIGN- 37 51 Ω PULSE+ PULSE- 41 51 Ω