GE Industrial Solutions DV-300 DC Drive Users Manual - Manual (Page 178)

GEI-100332Ga
——— FUNCTION DESCRIPTION ———
6
50
Speed
Index Storing
Motor
A
H
Tacho
+
-
T
ach
generator
CEMF
Armature
Fbk Bypass
Encode
r
1
Sinusoidal
6
5
1
8
4
3
A+
A-
B+
B-
C+
C-
0V
5V
XE1 connector
9
7
Encode
r
1
Digital
6
5
1
8
4
3
A+
A-
B+
B-
C+
C-
0V
24
XE2 connector
2
7
Enable ind store
Disabled
Encoder 2 pulses
1024
Refresh enc 2
Disabled
Encoder 1 pulses
1024
Refresh enc 1
Disabled
Speed fbk sel
Armature
Speed fbk sel
Encoder 1
Speed fbk sel
Encoder 2
Speed fbk sel
Tacho
Enc 1 speed
PD output PID
Encoder 1 state
Encoder 2 state
Speed offset
0
Tacho scale
1
Actual spd (d)
Max. out voltage
500 V
Output voltage
Enable fbk bypass
Disabled
Figure 6.11.4.1: Speed feedback
Motor max speed Max motor speed. It is used to convert tach and armature feedback values in rpm. In case
of speed feedback from tachogenerator it is used to convert the tach voltage in an rpm
value. In case of armature voltage feedback Max out voltage parameter is considered
equivalent to Motor max speed.
Speed fbk sel Select which feedback has to be used.
Encoder 1 The sinusoidal encoder connected th the XE1 connector is used.
Encoder 2 The digital encoder connected to the XE2 connector is used
(standard).
Tacho The analog tachogenerator connected to the terminals + and - is used.
Armature The internal measurement of the armature voltage is used. No
external connection is required.
Enable fbk contr Enable of the control for the speed feedback.
Enabled Enabled control
Disabled Disabled control
This function controls the speed feedback, where a comparison between the armature
voltage and the speed value read by the encoder or by the tachometer is made. When an
excursion higher of the value set via Speed fbk error is signaled, the failure message
“Speed fbk loss” appears. This function is automatically disabled when the armature
feedback has been selected. (Speed fbk sel = Armature).