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gunther
@gunther
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Joined: Dec 9, 2024
Last seen: Sep 21, 2026
Topics: 0 / Replies: 8
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RE: S7-1200 slot 3 SM 1223 faults after a download, rest of the rack runs

The module is defective. We have had three go the same way, always after a load, because the load is when the module is addressed again after sitting....

3 weeks ago
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RE: PowerFlex 525 STO inputs instead of the safety contactor, panel builder wants it dropped

STO for the stop, the disconnect for the lockout. Two different things.

3 weeks ago
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RE: SINAMICS G120 F01910 fieldbus setpoint timeout when the PLC goes to STOP

Losing the master is a fault. A warning would let it keep running.

3 weeks ago
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RE: G120 runs the pump backwards after a motor swap

The drive does not know which way the motor turns. It outputs U, V, W in the same sequence it always did. If the leads in the new motor's terminal box...

3 weeks ago
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RE: SINAMICS G120 on S7-1500 telegram 1, r0052 ready to switch on but never runs

The drive is waiting for an edge. Bit 0 of the control word, OFF1, must go from 0 to 1 while the other bits are already set. If the PLC writes 16#047F...

3 weeks ago
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RE: G120C says 1450 rpm, tacho says 1390, label pitch wrong

The 1450 on the display is the setpoint, worked out from frequency and pole count. It isn't a measurement. Nothing is broken. In V/f the drive doesn't...

3 weeks ago
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RE: PowerFlex 525 STO inputs instead of the safety contactor, panel builder wants it dropped

Which stop category does the risk assessment require for that E-stop? STO is stop category 0, the drive removes torque and the motor coasts. If a cont...

3 weeks ago
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RE: SINAMICS G120 F01910 fieldbus setpoint timeout when the PLC goes to STOP

This is not a fault in the sense of something broken. F01910 means the drive expected a cyclic telegram with a valid setpoint and did not get one with...

3 weeks ago