Installation and Configuration
Ndrive QL Hardware Manual
2.4.3. Opto-Isolated Inputs 0-3
The digital inputs are opto-isolated and may be connected to current sourcing or current sinking devices, as
shown in
Figure 2-6
and
Figure 2-7
. These inputs are designed to connect to other ground-referenced circuits
and are not intended for high-voltage isolation.
The opto-isolator's common connections can be directly connected to the drive's power supply; however,
doing so will effectively defeat the isolation and will reduce noise immunity.
Table 2-10:
PS2815-4 Opto-Device Specifications
Input Voltage
Approximate Input Current
Turn On/Off Time
5 to 24 V
5 mA
<100 usec
Table 2-11:
Digital Input Connector Pin Assignment (J108)
Pin
Description
17
Opto-Isolated Input 0
18
Opto-Isolated Input 1
24
Common for Opto-Isolated Inputs 0-3
25
Opto-Isolated Input 2
26
Opto-Isolated Input 3
30
Chapter 2
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