Renishaw SPA3-2 Manual Del Usuario página 19

SPA3-2 installation guide
www.renishaw.com
Scale and motor encoder inputs (15W HDD
socket)
The SPA3-2 can support up to 4-axis scale inputs and 3-axis of motor encoder inputs. Each input supports a RS-422 (TIA/EIA-422) standard
quadrature interface with an edge rate of up to 30 MHz, also supported are discrete and tristate error signals as well as readhead limit
switches.
The scale inputs support absolute readheads using the BiSS protocol as used by Renishaw Resolute™, 18, 26, 32 and 36 bit protocols are
supported.
Pin number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Shell
Issued 08 2020
Incremental readhead
Not connected
0 V supply
- Error
- Reference mark
- B signal
- A signal
+ 5.25 V supply
+ 5.25 V supply
0 V supply
Limit switch Q
+ Error / limit switch P
+ Reference mark
+ B signal
+ A signal
Inner screen
Outer screen
Motor encoder
Not connected
0 V supply
Not connected
Not connected
- B signal
- A signal
+ 5.25 V supply
+ 5.25 V supply
0 V supply
Not connected
Not connected
Not connected
+ B signal
+ A signal
Inner screen
Outer screen
Absolute encoder
Reserved
0 V supply
Reserved
Reserved
MA-
SLO-
+ 5.25 V supply
+ 5.25 V supply
0 V supply
Reserved
Reserved
Reserved
MA+
SLO+
Inner screen
Outer screen
19