DOUT Connector (Digital Outputs)

Optically-isolated solid-state relays drive the digital outputs. You can connect the digital outputs in current sourcing or current sinking mode but you must connect all four outputs in a port in the same configuration. Refer to Digital Outputs Connected in Current Sourcing Mode and Outputs Connected in Current Sinking Mode.

You must install suppression diodes on digital outputs that drive relays or other inductive devices. To see an example of a current sourcing output that has diode suppression, refer to Digital Outputs Connected in Current Sourcing Mode. To see an example of a current sinking output that has diode suppression, refer to Outputs Connected in Current Sinking Mode.

The digital outputs are not designed for high-voltage isolation applications and they should only be used with ground-referenced circuits.

IMPORTANT: The digital outputs have overload protection. They will resume normal operation when the overload is removed.

Table 2-32:     Digital Output Specifications

Digital Output Specifications

Value

Maximum Voltage

24 V (26 V Maximum)

Maximum Sink/Source Current

250 mA/output

Output Saturation Voltage

0.9 V at maximum current

Output Resistance

3.7 Ω

Rise / Fall Time

250 µs (2K pull up to 24V)

Reset State

Output Off (High Impedance State)

Table 2-33:     DOUT Connector Digital Outputs Pinout

Pin #

Description

In/Out/Bi

Connector

1

 Port 0 Digital Output Common Output

2

 Port 0 Digital Output 0 Output

3

 Port 0 Digital Output 1 Output

4

 Port 0 Digital Output 2 Output

5

 Port 0 Digital Output 3 Output

6

 Port 1 Digital Output Common Output

7

 Port 1 Digital Output 4 Output

8

 Port 1 Digital Output 5 Output

9

 Port 1 Digital Output 6 Output

10

 Port 1 Digital Output 7 Output

11

 +5 V (1) Output

12

 +5 V (1) Output

13

 Ground N/A

14

 Port 2 Digital Output Common Output

15

 Port 2 Digital Output 8 Output

16

 Port 2 Digital Output 9 Output

17

 Port 2 Digital Output 10 Output

18

 Port 2 Digital Output 11 Output

19

 Port 3 Digital Output Common Output

20

 Port 3 Digital Output 12 Output

21

 Port 3 Digital Output 13 Output

22

 Port 3 Digital Output 14 Output

23

 Port 3 Digital Output 15 Output

24

 Ground N/A

25

 Key N/A

(1) The maximum combined current output is 500 mA.

Table 2-34:     DOUT Mating Connector Ratings

Specification 25-Pin Solder Cup

Backshell
Aerotech Part Number ECK00101 ECK00656
Amphenol Part Number (1) DB25P064TXLF

17E-1726-2
Maximum Wire Size 20 AWG (0.5 mm2)

N/A

(1) Refer to the manufacturer website for additional information.

Figure 2-33:     Digital Output Schematic

Figure 2-34:     Digital Outputs Connected in Current Sourcing Mode

Figure 2-35:     Outputs Connected in Current Sinking Mode