GE Industrial Solutions DV-300 DC Drive Users Manual - Manual (Page 146)

GEI-100332Ga
——— FUNCTION DESCRIPTION ———
6
18
Parameter description No.
Value
Standard
Configuration min max
Factory
American
Factory
European
Ramp ref 1 [FF]
Ramp ref 1 (%)
44
47
-2 P45
-200.0
+2 P45
+200.0
0
0.0
0
0.0
An. Input 1
(Terminals 1 + 2)*
Ramp ref 2 [FF]
Ramp ref 2 (%)
48
49
-2 P45
-200.0
+2 P45
+200.0
0
0.0
0
0.0
*
Ramp ref (rpm)
Ramp ref (d) [FF]
Ramp ref (%)
110
109
111
-32768
-32768
-32768
+32767
+32767
-200.0
-
-
+200.0
-
-
-
**
* This function can be assigned to one of the programmable analog inputs. The converter is already
fatory set for a configuration using the terminals stated. The setting can also be modified to suit the
application at hand.
** This parameter can be assigned to a programmable analog output.
Ramp ref 1 1st reference value for the ramp. The value to be entered depends on the factor function.
Ramp ref 1 (%) 1st reference value as a percentage of the Speed base value
Ramp ref 2 2nd reference value for the ramp. The value to be entered depends on the factor function.
Ramp ref 2 (%) 2nd reference value as a percentage of the Speed base value
Ramp ref (rpm) Total reference value for the ramp in rpm (revolutions per minute)
Ramp ref (d) Total reference value for the ramp in the dimension specified by the factor function.
Ramp ref (%) Total reference value of the ramp as a percentage of the Speed base value
n
ota
: Speed base value cannot exceed 8192 rpm
The total Ramp reference value Ramp ref consists of the signed addition of Ramp ref 1 and Ramp ref 2 (see
Figure 6.4.1.1).
Example 1:
Ramp ref 1 = + 50 % Ramp ref 2 = + 30 %
Ramp ref = 50 % + 30 % = 80 %
Example 2: Ramp ref 1 = + 40 % Ramp ref 2 = - 60 %
Ramp ref = 40 % - 60 %= - 20 %
0 ... 10 V, 0 ... 20 mA and 4 ... 20 mA signals can be used when setting the reference value via terminals.
The Ramp ref (rpm), Ramp ref (d) and Ramp ref (%) are influenced by the minimum speed limits. These are
directly applied on the Ramp ref 1, as well as the Motor potentiometer and Multispeed references.
6.4.2 Speed ref
INPUT VARIABLES
Speed ref
Speed ref 1
[42] Speed ref 1 [FF]
[378] Speed ref 1 (%)
Speed ref 2
[43] Speed ref 2 [FF]
[379] Speed Ref 2 (%)
The speed reference value specifies the required speed of the drive. The drive responds to the reference value
progression directly, except in cases where the torque available is insufficient for this purpose. In this case, the
drive operates at current limit until the selected speed has been reached. The speed reference value determines
the speed of the motor, while the polarity determines the directíon of rotation.