| Questions & Answers |
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Can I use the analog output of a PLC (e.g., DC voltage) to control the speed?
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No. The ES01 was not designed to accept an external DC voltage source. If an analog
output is required, please consider the following moors: the BX,
the BLF,
the FBL,
and the AXH.
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Can I use (non-contact) transistor switches to operate the Run/Stop (SW2) and Run/ Brake (SW3) inputs?
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You cannot use transistor switches with a common emitter. This is because SW2 (Run/Stop) is supplied +10V, S1 is GND, and S3 (Run/Brake) is supplied –10V. That means that S1 has bi-directional current flow, which cannot happen with a transistor having a common emitter. Since there would be a +10 voltage potential between S2 and S1, a common emitter would result in a short circuit and the large current would damage the transistor controlling S3 and S1. You can, however, use PLC controls with switches having separate paths to ground. The brochures and manuals show simple contact-type switches, which are also acceptable.
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