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Altivar
®
58 TRX AC Drives
I/O Extension Cards
27
09/2003
© 2000–2003 Schneider Electric All Rights Reserved
I/O Extension Card with Analog Inputs (VW3A58201U)
This model includes two 24 Vdc logic inputs, one 24 Vdc open collector logic
output, one 0 to 20 mA X-Y configurable analog output, and one bipolar ±10
Vac analog input. The analog input may be used for speed correction with a
tachogenerator, for feedback of the PI function, for processing of PTC motor
protection probes, or for summing the frequency reference.
The figure to the left shows the location of the terminals for this I/O card. The
following tables describe the terminal functions and characteristics. See
page 50 for a summary of configurable I/O functions.
Functions and Characteristics of Terminals
Terminal Function Characteristics
COM Common for analog inputs and outputs 0 V
AI3A Differential analog input
± 10 V, impedance = 30 kΩ
AI3B Differential analog input
+10 Supply for analog inputs + 10 V, Is = 10 mA maximum
-10 Supply for analog inputs - 10 V, Is = 10 mA maximum
AO Analog output
0 - 20 mA, (x - y configurable)
Load impedance = 500 Ω maximum
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 65A-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 5 ms, maximum.
Logic Output LO
1 reassignable open collector logic output, compatible with level 1 PLCs according to
IEC 65A-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 5 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 5 ms, maximum.
Analog Input AI
1 reassignable 0 ± 10 V bipolar differential input.
Impedance = 30 kΩ. Adjustable gain.
Maximum allowable voltage: ± 30 V
Freq. reference resolution: 0.1 Hz for 100 Hz (0.1% of max. freq.), 10 bits plus sign.
Accuracy: ± 0.5%
Linearity: ± 0.2% of the maximum output frequency
The analog input is sampled every 5 ms, maximum.
Maximum length of shielded cable: 66 ft (20 m)
If configured for thermal sensors, use 750 Ω maximum at 20 °C (68 °F)
(three 250 Ω sensors in series).
◆ 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
AI 3A
AI 3B
+ 10
- 10
AO
LI 5
LI 6
+ 24
LO
LO+
Terminals for the I/O Extension Card
with Analog Inputs
AnalogIOTerms.eps