ElmoMC SimplIQ Analog Servo Amplifiers-Piccolo Installation - Manual (Page 24)

Piccolo Installation Guide Servo Control Operation
MAN-PICIG (Ver. 2.301)
www.elmomc.com
24
4.3. Current Gain Control (CGC)
The Piccolo amplifier is equipped with Current Gain Control (CGC) for improved performance of
low induction motors. Connecting pin J1/8 to J1/9 reduces the gain of the current loop, thus
enabling the use of low inductance motors without the insertion of an additional inductor. The
default (pin J1/8 left open) is high gain.
Shorting this pin to the circuit common pin (J1/9) reduces the proportional gain (P) of the
current loop by approx. 70%.
For permanent selection, a simple short is recommended. For remote selection, the following
scheme should be used.
Figure 5: CFM and CGC Remote Control
The following table should be used for calculating minimum inductance values.
Minimum Inductance for High Gain Minimum Inductance for Low Gain
5/60
L
Load (millihenry)
> 12*10 -3 * V
supply (Volt)
L
Load (millihenry)
> 4.8*10 -3 * V
supply (Volt)
10/60
L
Load (millihenry)
> 6*10 -3 * V
supply (Volt)
L
Load (millihenry)
> 2.4*10 -3 * V
supply (Volt)
15/60
L
Load (millihenry)
> 4*10 -3 * V
supply (Volt)
L
Load (millihenry)
> 1.6*10 -3 * V
supply (Volt)
25/60
L
Load (millihenry)
> 2.4*10 -3 * V
supply (Volt)
L
Load (millihenry)
> 0.9*10 -3 * V
supply (Volt)
3/100
L
Load (millihenry)
> 30*10 -3 * V
supply (Volt)
L
Load (millihenry)
> 7.5*10 -3 * V
supply (Volt)
10/100
L
Load (millihenry)
> 9*10 -3 * V
supply (Volt)
L
Load (millihenry)
> 2.2*10 -3 * V
supply (Volt)
15/100
L
Load (millihenry)
> 6*10 -3 * V
supply (Volt)
L
Load (millihenry)
> 1.5*10 -3 * V
supply (Volt)
20/100
L
Load (millihenry)
> 4*10 -3 * V
supply (Volt)
L
Load (millihenry)
> 1.1*10 -3 * V
supply (Volt)
2/200
L
Load (millihenry)
> 50*10 -3 * V
supply (Volt)
L
Load (millihenry)
> 12*10 -3 * V
supply (Volt)
6/200
L
Load (millihenry)
> 16.5*10 -3 *V
supply(Volt)
L
Load (millihenry)
> 4*10 -3 * V
supply (Volt)
10/200
L
Load (millihenry)
> 10*10 -3 *V
supply(Volt)
L
Load (millihenry)
> 2.4 -3 * V
supply (Volt)
15/200
L
Load (millihenry)
> 6.5*10 -3 *V
supply(Volt)
L
Load (millihenry)
> 1.6 -3 * V
supply (Volt)
Table 8: Minimum Inductance Values