Yaskawa DS387 - Manual (Page 8)

B5. For VCD 703, all input selection jumpers on
the AI–14B board must be set to "V" (see Figure
B2).
B6. Wiring. See Figure B3 for Analog Speed
Reference connections. See Table B2 for
terminal functions.
CAUTION
KEEP ANALOG SPEED REF. (I.E. CONTROL CIRCUIT) WIRING
SEPRATE FROM MAIN CIRCUIT INPUT/OUTPUT WIRING.
CAUTION
TO PREVENT ERRONEOUS OPERATION CAUSED BY NOISE
INTERFENCE, USE SHIELDED CABLE FOR CONTROL WIRING, AND
LIMIT DISTANCE TO 10M (33 FEET) OR LESS.
CAUTION
IF ANY OF THE CONTROL SIGNAL INPUT TERMINALS (TC1 THRU TC3)
ARE NOT USED, JUMPER THEM TO 0V TERMINAL (TC4).
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 B2. Voltage/Current Selection on AI-14B
• • •
V C
• • •
V C
• • •
V C
PART OF
AI-14B
BOARD
ALL JUMPERS
(SHORTING
PLUGS) SHOWN
IN POSITION
FOR VOLTAGE
INPUT
Table B2. Terminal Functions of AI-14B
Terminal Function Signal Level Notes
TC1 Analog voltage input Voltage Input: — Input Resolution:
Input voltage: 0 to ±10V/0 to ±100% Voltage: 1/8192 (13 bits) plus
TC2 Analog voltage input Input impedance: 20K
Ω
sign (polarity)
TC3 Analog voltage input — Signal Linearity: ±0.1%
— Terminal screws are metric
TC4 Signal common 0V size M3.
Yaskawa Electric America, Inc-www.drives.com
02Y00025-0296 Page 8 OF 14
REL. 08/23/91
ANALOG SPEED REFERENCE
(BIPOLAR) (AI-14B) MODEL DS387