Altivar
®
58 TRX AC Drives
I/O Extension Cards
© 2000–2003 Schneider Electric All Rights Reserved
28
09/2003
I/O Extension Card with Encoder Inputs (VW3A58202U)
This card includes two 24 Vdc logic inputs, one 24 Vdc open collector logic
output, one 0 to 20 mA X-Y configurable analog output, and A+, A–, B+, B–
inputs which may be used for speed correction with an incremental encoder
or with an inductive or photoelectric sensor.
The figure to the left shows the location of the terminals for this I/O card, while
the tables below describe the terminals. See page 50 for a summary of
configurable I/O functions.
Functions and Characteristics of Terminals
Terminal Function Characteristics
COM Common
0 V
At the same potential as COM on the
main control board.
A
Incremental logic inputs
Nominal voltage 24 Vdc,
Input impedance 785 Ω ±10%
A–
B
B–
AO Analog output
0 - 20 mA, (x - y configurable)
Max. Load impedance = 500 Ω
LI5
Logic inputs
2 logic inputs
Impedance = 3.5 kΩ
Supplied by +24 V
LI6
+24 Supply for logic inputs +24 V, Is = 200 mA maximum
◆
LO Logic output Open collector output
LO+ Supply for logic output +24 V supply, Is = 20 mA maximum
◆ The 200 mA is the sum of the current supplied by the +24 on the control board and
the +24 on the I/O extension card.
Specifications
Available internal supplies
Protected against short circuits and overloads
1 output +10 V ± 1%, Is = 10 mA maximum
1 output -10 V ±1%, Is = 10 mA maximum
1 output +24 V (20 V min., 30 V max.), Is = 200 mA maximum
◆
Logic Inputs LI
2 reassignable logic inputs. Impedance = 3.5 kΩ. Compatible with level 1 PLCs
according to IEC 60065A-68. Maximum shielded cable length: 330 ft (100 m).
Supply: +24 Vac (11 V min., 30 V max.)
State 0 if < 5 V, state 1 if > 11 V.
The logic inputs are sampled every 2 ms, maximum.
Logic Output LO
1 reassignable open collector logic output, compatible with level 1 PLCs according to
IEC 60065A-68.
Supply: +24 V (12 V min., 30 V max.),
maximum current = 20 mA with internal source or 200 mA with external source.
The logic output is updated every 2 ms, maximum.
Analog Output AO
1 reassignable 0 - 20 mA analog output, (x - y configurable).
Maximum load impedance = 500 Ω.
Resolution: 0.04 mA (9 bits)
Linearity: ± 0.1 mA
Accuracy: ± 0.2 mA
The analog output is updated every 2 ms, maximum.
Logic Inputs A, A-, B, B-
For incremental encoder (TTL, line driver, push pull) or open collector type
(NPN detector, three-wire inductive, or photoelectric sensor).
Nominal voltage: 24 Vdc (19.2 to 30 V).
Input impedance: 785 Ω ±10%.
Maximum signal frequency: 33 kHz with motor operating at drive controller high
speed setting (HSP).
It is preferable to use an external 24 V external supply for the incremental encoder.
◆ The 200 mA is the sum of the current supplied by the +24 on the control board and
the +24 on the I/O extension card.
COM
A
A –
B
B –
AO
LI 5
LI 6
+ 24
LO
LO+
Terminals for the I/O Extension Card
with Encoder Inputs
DigitalIOTerms.eps
