GE Industrial Solutions DV-300 DC Drive Users Manual - Manual (Page 207)

DV-300 Adjustable Speed Drives
——— FUNCTION DESCRIPTION ———
6
79
6.12.5 Speed reference from encoder input (Tach follower function)
I/O CONFIG
Encoder inputs
[1020] Select enc 1
[1021] Select enc 2
[416] Encoder 1 pulses
[169] Encoder 2 pulses
[649] Refresh enc 1
Parameter description No.
Value
Standard
Configuration min max
Factory
American
Factory
European
Select enc 1
OFF (0)
Speed ref 1 (1)
Speed ref 2 (2)
Ramp ref 1 (3)
Ramp ref 2 (4)
1020 0 5 OFF (0) OFF (0)
Select enc 2
OFF (0)
Speed ref 1 (1)
Speed ref 2 (2)
Ramp ref 1 (3)
Ramp ref 2 (4)
1021 0 5 OFF (0) OFF (0)
Encoder 1 pulses 416 600 9999 1024 1024
Encoder 2 pulses 169 150 9999 1024 1024
Refresh enc 1
Enabled (1)
Disabled (0)
649 0 1 Disabled (0) Disabled (0)
Refresh enc 2
Enabled (1)
Disabled (0)
652 0 1 Disabled (0) Disabled (0)
6
5
1
8
9
7
A+
A-
B+
B-
0V
5V
XE1 connector
6
5
1
8
2
7
A+
A-
B+
B-
0V
24
XE2 connector
Encoder 1 Encoder 2
Select enc 2
OFF
Select enc 1
OFF
Figure 6.12.5.1: Tach follower
This configuration allows the use of the encoder inputs, as a speed reference. Compared to an analog input, these
inputs have higher resolution and higher noise immunity.
Using for this purpouse the encoder input (XE1 or XE2 connector), it is necessary to define the destination,
selecting properly the type of speed reference on which it has to interact (Ramp ref 1, Speed ref 1, etc.)
When the encoder input is used as a speed reference source, using the same encoder input as speed feedback is
disallowed. It is impossible to configure the same speed reference to the encoder input and an analog input.