Warning – Yaskawa DS387 User Manual

Page 4

IMPORTANT

Because the analog speed reference is converted by 1/16384 resolution, the
voltage source accuracy of the analog speed reference source must be con-
sidered. To ensure speed control accuracy, use a high precision power supply for
the voltage source.

Route wires from the drive and connect to the peripheral device. Refer to "Electrical Installation" in the drive
technical manual for further information on use of shielded cable.

Figure A3. Interconnection for Analog Speed Reference (AI-14B) Circuit in GPD 515

2CN

GPD
515

AI-14B BOARD

L1
L2
L3

T1
T2
T3

I M

MOTOR

MCCB

SHIELD

HIGH ACCURACY
VOLTAGE / CURRENT
DEVICES

2CN

14 BIT
A/D

SEE
FIGURE A4
FOR BLOCK
DIAGRAM

0-±10V
or 0-20mA

TC1

TC2

TC3

TC4

A7. Adjustments.

There are no adjustments to be made on the Analog Speed Reference option; however, the GPD 515 will have to
be reprogrammed for the input requirement(s) of the remote device and the reversing or non-reversing
requirement of the specific application.

WARNING

IF THE APPLICATION REQUIRES THAT REVERSE MOTOR
ROTATION BE PROHIBITED, PARAMETER b1-04 MUST BE SET
TO " 1 " SO THAT THE MOTOR WILL STOP ANY TIME
POLARITY OF THE SPEED REFERENCE GOES NEGATIVE.

Yaskawa Electric America, Inc-www.drives.com

02Y00025-0296 Page 4 OF 14

REL. 08/23/91

ANALOG SPEED REFERENCE

(BIPOLAR) (AI-14B) MODEL DS387