Cut Sheet

Volume 7—Logic Control, Operator Interface and Connectivity Solutions CA08100008E—February 2014 www.eaton.com V7-T4-37
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4.2
PLC, I/O and Communications Products
XC Series Programmable Logic Controllers
XC121 Expansion Module, continued
Description Unit XIO-EXT121-1
Digital Outputs
Number At X3: 8 (can also be used as inputs)
Rated voltage
Rated voltage (U
e
) Vdc 24
Permissible range 20.4–28.8 Vdc
Ripple %
<
5
Rated operational current
At state “1” (I
e
) A 0.5 at 24 Vac
Utilization factor (%) g 1
Maximum duty factor ms 100%
Lamp load without (R
v
)W5
Potential isolation No
Residual current at state “0” per channel mA <0.1
Max. output voltage
At state “0” with external load <10M ohms V 2.5
At state “1” at I
e
= 0.5A V U = U
e
–1V
Short-circuit tripping current
Short-circuit tripping current for R
a
<10M ohms A 0.7
<
I
e
<
2 for output
Total short-circuit current A 16
Peak short-circuit current A 32
Max. operating frequency ops/h 40,000
Parallel connection capability Yes
Analog Inputs 0–10V
Number of channels 2
Primary voltage range V 0–10
Resolution bit 10
Conversion time ms
<
5
Overall accuracy
<
± 1% (of full-scale value)
Input resistance kohm 200
Analog Inputs 0–20 mA
Number of channels 2
Primary voltage range mA 0–20
Resolution bit 10
Conversion time ms
<
5
Overall accuracy
<
± 1% (of full-scale value)
Input resistance ohm 50
PT100 RTD
Number of channels 2
Temperature range °F (°C) –348° to 392° (–200° to 200°)
Resistance range ohm 18.5–175.8
Resolution bit 10
Overall accuracy
<
± 2%
Analog Outputs
Number of channels 2
Secondary voltage range V 0–10
Resolution bit 12
Conversion time ms
<
5
Overall accuracy
<
± 1% (of full-scale value)
External load resistance (R) kohm 10