Specifications

Altivar
®
31 Adjustable Speed AC Drives
Wiring
27
4/2005
© 2004–2005 Schneider Electric All Rights Reserved
Logic input switch
The logic input switch assigns the logic input common link to 0 V (Source logic), 24 V (Sink logic), or
floating (CLI).
NOTE: When the logic input is configured for Sink logic, grounding the input signals can result in
unintended activation of drive controller functions.
Examples of recommended circuit diagrams
Logic input switches (the heavy dashed line represents the drive controller)
AOC output
Source position (1)
Internal supply
Source or Floating position
External supply or PLC (2)
Sink position
Internal supply
Floating position
External supply or PLC
Wired as logic output
Two-wire control Three-wire control Analog voltage inputs Analog current input
± 10 V external ± 10 V external 0–20 mA, 4–20 mA, X–Y mA
1) Factory setting for controllers other than ATV31••••••A
2) Jumper installed from COM to CLI.
0V
CLI LI1 LIx
Source
(1)
CLI at 0 V
CLI LI1 LIx
Floating
CLI Floating
24V
CLI LI1
LIx
Sink
CLI at 24 V
ATV31 Logic Input Switch.eps
+24
LI1
LIx
COM
CLI
24 V Internal Source
Relay Contacts
+24
COM
CLI
+24
LIx
LI1
PLC with either transistor
outputs or relay contacts
and its own internal su
pp
l
y
24 V Internal Source
+24
COM
CLI
+24
LIx
LI1
24 V Internal Source
Relay Contacts
+24
COM
CLI
LI1
LIx
+24
24 V Internal Source
PLC with either transistor
outputs or relay contacts
and its own internal supply
AOC 0 V
24 V
relay
10 mA
ATV31 control terminals
LI1 + 24 V LIx
ATV31 control terminals
LI1: Forward
LIx: Reverse
LI1 LI2 + 24 V LIx
ATV31 control terminals
LI1: Stop
LI2: Forward
LIx: Reverse
AI1 0 V
+ 10 V
Speed
reference
potentiometer
2.2 to 10 kΩ
ATV31 control terminals
AI2 0 V
± 10 V
ATV31 control terminals
AI3 0 V
Source
0–20 mA
4–20 mA
X–Y mA
ATV31 control terminals
Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: [phone]-Outside Local Area: [phone]-www.stevenengineering.com