Instruction manual

Appendix 4. Explanation of Large Capacity Spindle Unit Specifications
A4 - 13
(2) Selection
(a) When using the MDS-B-CVE-450, 550, one of the B-SPA-370, 450, 550 units must be selected
for the drive units connected to this power supply unit.
Only one MDS-B-SPA-370, 450, 550 can be connected to one MDS-B-CVE-450, 550.
(b) When using MDS-B-SPA-370, 450 or 550, the following power supply unit must be selected.
• When using MDS-B-SPA-370: Select MDS-C1-CV-260 or more or MDS-B-CVE-450 or 550
• When using MDS-B-SPA-450: Select MDS-C1-CV-300 or more or MDS-B-CVE-450 or 550
• When using MDS-B-SPA-550: Select MDS-C1-CV-370 or more or MDS-B-CVE-450 or 550
Note that if the total of the spindle motor output corresponds to the above power supply unit
with the normal selection method, that capacity power supply unit can be selected.
<Example 1> When using MDS-B-SPA-370
When total of servo/spindle motor output is 23kW or less: Select MDS-C1-CV-260
When total of servo/spindle motor output is 23.1kW or more: Select power supply unit with
normal selection method.
<Example 2> When using MDS-B-SPA-450
When total of servo/spindle motor output is 27kW or less: Select MDS-C1-CV-300
When total of servo/spindle motor output is 27.1kW or more: Select power supply unit with
normal selection method.
<Example 3> When using MDS-B-SPA-550
When total of servo/spindle motor output is 31kW or less: Select MDS-C1-CV-370
When total of servo/spindle motor output is 31.1kW or more: Select power supply unit with
normal selection method.