Scale Inputs (15-Pin Hdd Socket) - Renishaw SPA3 Installation Manual

SPA3 installation guide
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Scale inputs (15-pin HDD socket)

These connectors are suppied pre-blanked for use with UCC2.
Remove blanking plugs for use with UCC T5 only.
These inputs are RS422 compatible scale inputs for each of the machine axes through the 15 W HDD connectors.
NOTE: If the machine scale is of a different format (e.g. analogue, single ended) then this will require an external adaptor.
Pin no.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Shell
Scale supply voltage is 5.25 V at 350 mA from each read head connector. Scale quadrature signals with ideal waveforms and phase
displacement with an edge rate of up to 40 MHz.
Scale input signals to be to EIA specification RS422.
Issued 11 2020
Function
External N/C
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
26