Auxiliary I/O Connector

The Auxiliary I/O connector has 1 analog input, 6 digital inputs, 1 analog output, 4 digital outputs, a secondary line driver encoder input, and a secondary absolute encoder interface.

Table: Auxiliary I/O Connector Pinout

Pin#	Description	In/Out/Bi
1	Auxiliary Sine +	Bidirectional
1	Absolute Encoder Data +	Bidirectional
2	Auxiliary Sine -	Bidirectional
2	Absolute Encoder Data -	Bidirectional
3	High-Speed Input 20 + / PSO External Sync. +	Input
4	High-Speed Input 20 - / PSO External Sync. -	Input
5	High-Speed Input 21 +	Input
6	High-Speed Input 21 -	Input
7	Digital Output 0	Output
8	Digital Output 1	Output
9	Digital Output 2	Output
10	Auxiliary Cosine +	Bidirectional
10	Absolute Encoder Clock +	Output
11	Auxiliary Cosine-	Bidirectional
11	Absolute Encoder Clock -	Output
12	+5 V (500 mA max)	Output
13	Analog Input 0+ (Differential)	Input
14	Analog Input 0- (Differential)	Input
15	Digital Output Common	Output
16	Digital Output 3	Output
17	Digital Input 0 / CCW EOT Input ⁽¹⁾	Input
18	Digital Input 1 / CW EOT Input⁽¹⁾	Input
19	Auxiliary Marker - / PSO⁽²⁾ Differential Output - / PSO TTL Output	Bidirectional
20	Auxiliary Marker + / PSO⁽²⁾ Differential Output +	Bidirectional
21	Common	Output
22	Analog Output 0	Output
23	Analog Common	Output
24	Digital Input Common	Output
25	Digital Input 2 / Home Input ⁽¹⁾	Input
26	Digital Input 3	Input
(1) Software configured option (2) For PSO, refer to Position Synchronized Output (PSO)

Table: Auxiliary I/O Mating Connector Ratings

Specification	26-Pin Solder Cup	Backshell
Aerotech Part Number	ECK01259	ECK01022
Manufacturer Part Number ⁽¹⁾	Kycon K86-AA-26P	Amphenol 17E-1725-2
Maximum Wire Size	22 AWG (0.25 mm²)	N/A
(1) Refer to the manufacturer website for additional information.