Hardware reference guide

I/O Modules
550
35013379 02 October 2007
140ACO02000 Quantum I/O Analog Current Out Module
Overview The Analog Output 4 Channel Current module controls and monitors current in 4 ...
20 mA loops.
Specifications The following table shows the module specifications.
Specifications
Number of Channels 4
LEDs Active
F
1 ... 4 (Green) - Module outputs switched on
1 ... 4 (Red) - Broken wire on indicated channels
NOTE: When the green channel status LEDs are off,
the loop current is 0 mA.
Required Addressing 4 Words Out
Loop Voltage 12 ... 30 Vdc. Up to 60 Vdc with an external loop
resistor. Outputs are short circuit proof up to 30 Vdc (up
to 60 Vdc with external loop resistor).
Loop Resistance
No external resistor is required for loop voltage supply
less than 30 volts.
Internal Voltage Drop 7 Vdc min, 30 Vdc max @ 20 mA
Resolution 12 Bits
Accuracy Error @ 25° C +/- 0.20% of full scale
Linearity +/- 1 LSB
Accuracy Drift w/Temperature Typical: 0.004% of full scale / °C. Maximum:0.007% of
full scale / °C
Isolation
Channel to Channel 500 Vac @ 47 ... 63 Hz or 750 Vdc for 1 minute
Channel to Bus 1780 Vac @ 47 ... 63 Hz, or 2500 Vdc for 1 minute
R
MAX
V
loop
7Vdc–
0.02A
----------------------------------=
*For a loop supply
less than 30 volts,
R
MIN is 0W
.
R
MIN
∗
V
loop
30Vdc–
0.02A
-------------------------------------=
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123 www.barr-thorp.com