Yaskawa MP2200 Machine Controller - Manual (Page 115)

3.2 SVA-01 Module Setup
3-43
[ b ] Restrictions in the SVA-01 Pulse Input Frequency
The limits to the SVA-01 pulse input frequency are as shown in the following tables.
Upper limit to the SVA-01 phase A/B input pulse frequency ＝ 4 MHz (before
multiplication)
Therefore;
Motor speed at a pulse input frequency of 4 MHz ＝ 4 × 10 6 × 60 ÷ Encoder resolution
The following table shows the relationship between the number of encoder bits and the maximum
speed for a pulse input frequency of 4 MHz to the SVA-01.
Application must be within the ranges shown in these tables when inputting pulses to the SVA-01.
* This table is used to explain restrictions in the SVA-01 pulse input frequency. It contains
some numbers of bits that do not actually exist on the products.
Encoder Bits *
Encoder Resolution
(before Multiplication)
Motor Speed (min -1 ) at a Pulse Input
Frequency of 4 MHz
12 bits 1024 234375
13 bits 2048 117187
15 bits 8192 29296
16 bits 16384 14648
17 bits 32768 7324
18 bits 65536 3662
19 bits 131072 1831
20 bits 262144 915
21 bits 524288 457
22 bits 1048576 228