Yaskawa Sigma I to Sigma-5 Conversion Guide - Manual (Page 38)

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3-3. Installation Size
Σ-V series servo amplifier is not compatible with Σ series servo amplifier in the dimension and mounting
dimension. The position of the screw for the installation is different.
【 AC200V, 200W or less】
【 AC100V, 200W or less and AC200V, 400W】
2-M4 Tap
2-M4 Tap