Yaskawa V7 Drives - Manual (Page 64)

5-12
Continued
D. Frequency Reference via Pulse Train Input
In order to set the Drive so the frequency reference comes from a pulse train, set the following
parameters.
Pulse Source Specifications
•
Low-level voltage: 0.8V or less
• High-level voltage: 3.5 to 32V
• Duty Cycle: 30 to 70% - high
• Pulse Frequency: 0 to 30 kHz
n149 : Pulse Train Input Scaling Factory Setting: 2500
Range: 100 to 3000 (x 10 Hz)
This parameter scales the incoming frequency on terminal RP by using the following equation
Frequency reference =
Pulse Source Frequency
*
n011
n149 * 10
E. Frequency Reference via Serial Communications - See paragraph 5.14
FC
RP
GPD Drive
Pulse
Source
PARAMETER SETTING DESCRIPTION
n004 5 Sets reference source as a pulse train at terminals RP & FC
n149
User
Sets the input scaling for the pulse train input
Set
5.11 FREQUENCY REFERENCE SELECTION
Drive