User Manual of EM760 High-Performance Inverter (4) Disconnect the load, and perform self-learning of asynchronous motor encoder. See 7.3.1 for detailed steps. (5) If the load can’t be disconnected, perform static self-learning of asynchronous motor, in case of which VF is required to determine encoder direction. To do this, set F00.01=0 and give 10 Hz, and check ifF18.02 and F18.01 have the same direction. If not, invert F01.27 (set it as 0/1 if it’s 1/0). (6) In case of excessive current in running with load, increase F06.06 appropriately. (7) In case of reversing upon start-up, reduce F04.06 and F04.07 appropriately.
(8) In case oflow rigidity, adjust F06.00~F06.05, increase speed loop gain, and reduce integral time; and if the rigidity is great and has caused motor vibration, reduce speed loop gain accordingly, and increase integral time. The EM760 series inverter supports a number of types of encoders, which, however, require varying PG cards. Please purchase the proper PG card as well (See Appendix III). Upon installing the PG card, set F01.24 properly based on the actual conditions, otherwise the inverter will not work during closed-loop control. Where speed sensor vector control (FVC) is available, the number of lines of the encoder must be correctly set, otherwise the motor will not work properly.
For encoders with AB signals (F01.24 = 0/1), when the feedback frequency direction of the PG card is found opposite to the set frequency, set F01.27 as 1 if it’s 0, and 0 if it’s 1. This parameter can be correctly set through motor parameter self-learning. The rotary transformer involves pole pairs, parameter of which should hence be properly set if this kind of encoders is used. 210 Function code Function codename Parameter description Unit Default setting Attribute F01.24 Encoder type 0: ABZ gain encoder 1: UVW gain encoder 2: Reserved 3: SinCos encoder (with CD signal) 4:
Rotary transformer 0 O Function code Function codename Parameter description Unit Default setting Attribute F01.25 Encoder line count 1~65535 1024 O Function code Function codename Parameter description Unit Default setting Attribute F01.27 AB pulse phase sequence 0: forward 1: reverse 0 O Function code Function codename Parameter description Unit Default setting Attribute F01.30 Pole pairs ofrotary transformer 1~65535 1 O