GE Industrial Solutions DV-300 DC Drive Users Manual - Manual (Page 200)

GEI-100332Ga
——— FUNCTION DESCRIPTION ———
6
72
Window comparator
Input 1 compare
0
Input 1 cp error
0
Input 1 cp delay
0 ms
Input 1 cp match
Figure 6.12.2.2: Analog Input 1 window comparator
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ote
! How to calculate Input 1 compare and Input 1 cp error parameters:
Input 1 compare = (Compare value ) * 10000 / (Full range value)
Input 1 error = (Tolerance half window) 10000 / (Full range value)
Example 1:
Select analog input 1 to Ramp ref 1
Speed base value equal to 1500 [RPM]
10Volt or 20 mA on analog input 1 (Ramp ref 1=Speed base value).
The application requires a signaling at 700 [RPM] via a digital output, with a tolerance window equal to 100 [RPM]
Input 1 cp match assigned to a programmable digital output.
Input 1 compare = 700 * 10000 / 1500 = 4667
Input 1 cp error = 100 * 10000 / 1500 = 666
Example 2:
Select analog input 1 to Ramp ref 1
Speed base value equal to 1500 [RPM]
10Volt or 20 mA on Analog input 1 (Ramp ref 1=Speed base value).
The application requires a signaling at –700 [RPM] via LAN, with a tolerance window equal to ±100 [RPM]
Input 1 compare = -700 * 10000 / 1500 = -4667
Input 1 cp error = 100 * 10000 / 1500 = 666
Example 3:
Select analog input 1 to Pad 0
10Volt or 20 mA on Analog input 1 corresponds to Pad 0=2047.
The application requires a signaling at 700 [count] via a digital output, with a tolerance window equal to ±50 [count]
Input 1 cp match assigned to a programmable digital output
Input 1 compare = 700 * 10000 / 2047 = 3420
Input 1 cp error = 50 * 10000 / 2047 = 244
Example 4:
Select analog input 1 to PID feedback
10Volt or 20 mA on Analog input 1 corresponds to PID feedback=10000.
The application requires a signaling at 4000 [count] via a digital output, with a tolerance band equal to ±1000 [count]
Input 1 cp match assigned to a programmable digital output
Input 1 compare = 4000 * 10000 / 10000 = 4000
Input 1 cp error = 1000 * 10000 / 10000 = 1000