Yaskawa DS387 - Manual (Page 11)

Section C: Installation in a GPD 503
INTRODUCTION
When installed, this option allows the user to interface three separate high resolution analog input signals, each of
which may be either current or voltage (13-bit plus sign). These signals are added by the AI-14B board and the
result is applied to the drive as a high accuracy 0-±10V frequency reference. Gain and bias for the input reference
is adjusted by using drive constants. Polarity (sign) of the speed reference controls direction of motor rotation.
INSTALLATION
C1. Disconnect all electrical power to drive.
C2. Remove drive front cover. Check that CHARGE indicator lamp inside drive is off.
C3. Verify voltage has been disconnected by using a voltmeter to check for voltage at incoming power terminals
(L1, L2, L3).
C4. See Figure C1. Install the option on the Main Control Board, 1PCB, and ensure 2CN is properly connected.
Make sure Electrostatic procedure is followed.
Figure C1. Installation of Analog Speed Reference (AI-14B) in GPD 503
Table C1. AI-14B Specifications in GPD 503
Parameter Value
Input Signal Level 0 to ±10V DC (Input Impedance: 20k
Ω
)
40 to 20mA (input impedance : 500
Ω)
Input Resolution Voltage: 13 bits (1/8192) plus sign (polarity)
Current: 1/6554
Yaskawa Electric America, Inc-www.drives.com
02Y00025-0296 Page 11 OF 14
REL. 08/23/91
ANALOG SPEED REFERENCE
(BIPOLAR) (AI-14B) MODEL DS387