Pin no.
Function
Description
1
+24 Vdc
Supply provided for use on CMM switched
2
Air
Output to control an air solenoid
3
X brake
Output to control the X brake
4
Y brake
Output to control the Y brake
5
Z brake
Output to control the Z brake
6
Output 0
General purpose output signal
7 to 12
Reserved
13
Input 0
General purpose input signal
14
Input 1
General purpose input signal
15 to 19
20
De-clutch
CMM de-clutch signal
21
Reserved
22
Low air
Low air pressure switch input
23
Crash
Crash detector switch input
24
Reserved
25
X axis outer limit
CMM X axis limit switch input
26
- X axis outer limit
CMM X axis limit switch input
27
Y axis outer limit
CMM Y axis limit switch input
28
-Y axis outer limit
CMM Y axis limit switch input
29
Z axis outer limit
CMM Z axis limit switch input
30
-Z axis outer limit
CMM Z axis limit switch input
31
X axis inner limit
CMM X axis limit switch input
32
-X axis inner limit
CMM X axis limit switch input
33
Y axis inner limit
CMM Y axis limit switch input
34
-Y axis inner limit
CMM Y axis limit switch input
35
Z axis inner limit
CMM Z axis limit switch input
36
-Z axis inner limit
CMM Z axis limit switch input
37
24 V return (0 V)
Common reference line for input and output
signals
38 to 43
Reserved
44
24 V return (0V)
Common reference line for input and output
signals
Shell
Screen
+24 Vdc
+24 Vdc limited to 1 A.
SPA3 installation guide
www.renishaw.com
Issued 11 2020
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