ElmoMC SimplIQ Analog Servo Amplifiers-Violin Installation - Manual (Page 18)

Violin Installation Guide Servo Control Operation
MAN-VIOIG (Ver. 2.3)
4-2
4.3 Current Gain Control (CGC)
The Violin 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 4-1: 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)
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)
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 -3 * V
supply (Volt)
L
Load (millihenry)
> ___*10 -3 * V
supply (Volt)
15/200 L
Load (millihenry)
> 6.5*10 -3 * V
supply (Volt)
L
Load (millihenry)
> 1.6 *10 -3 * V
supply (Volt)
Table 4-2: Minimum Inductance Values