Baldor NextMove ESB-2 Installation Manual page 31

4.4.3.1 Encoder input frequency
The maximum encoder input frequency is affected by the length of the encoder cables.
The theoretical maximum frequency is 10 million quadrature counts per second. This is
equivalent to a maximum frequency for the A and B signals of 2.5 MHz. However, the effect
of cable length is shown in Table 1:
A and B signal
frequency
1.3 MHz
500 kHz
250 kHz
100 kHz
50 kHz
20 kHz
10 kHz
7 kHz
Table 1: Effect of cable length on maximum encoder frequency
The maximum recommended cable length is 30.5 m (100 ft).
Servo Systems Co. • 115 Main Road • P.O. Box 97 • Montville, NJ,
4-16 Input / Output
meters
2
10
20
50
100
300
700
1000
07045-0097 • (973) 335-1007 • Toll Free: (800) 922-1103
Fax: (973) 335-1661 • www.servosystems.com
Maximum cable length
www.baldormotion.com
feet
6.56
32.8
65.6
164.0
328.1
984.2
2296.6
3280.8
MN1957