Motor Encoders - Renishaw SPA2-2 Installation Manual

Digital servo power amplifier
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SPA2-2 installation guide
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Motor encoders

If the axis drive motors are fitted with rotary encoders as a method of speed control then these encoders will need to be connected to the
SPA2-2 motor encoder connectors. The encoders are sensitive to supply voltage so the recommended maximum volt drop is only 0.25 V.
The encoder can typically take up to 500 mA.
Maximum current
Maximum
(Amps)
permitted Volt
drop
0.5
0.25
0.5
0.25
0.5
0.25
Issued 11 2020
Maximum length
Minimum CSA
(metre)
﴾mm²﴿
10
0.34
20
0.69
40
1.38
Minimum diameter
Nearest AWG size
(mm)
0.66
21
0.94
18
1.32
15
35

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