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What's wrong with Suzhou Suzuki escalator 17?

After sending the operation instruction, the main control unit did not receive the operation signal of the frequency converter. Upon inquiry, Suzhou Suzuki Escalator 17 did not receive the frequency converter operation signal after the main control unit issued the operation instruction. You can check the direction enable signal of the inverter, run the signal output circuit, and check the relevant parameter settings of the inverter.