Hardware reference guide

Intrinsically Safe Modules
420
35013379 11/2011
140AIO33000 Intrinsically Safe Analog Output Module
Overview
The Quantum 140AIO33000 Intrinsically Safe Analog Output module controls and
monitors current loops in intrinsically safe applications. The module provides 8 dual-
ended output channels that are referenced over sense resistors to a single
Common. The output ranges are 4 ... 20 mA, 0 ... 20 mA, and 0 ... 25 mA. This
module detects broken wires on a per-channel basis indicates their location on the
front panel LEDs, and transmits the status to the PLC.
Specifications
Specifications for the Quantum 140AIO33000 Intrinsically Safe Analog Output
module are as follows.
Specifications
Number of Channels 8
LEDs Active (Green)
F (Red)
1 ... 8 (Green) - Module output switched ON
1 ... 8 (Red) - Broken wire on indicated Channel
(4 ... 20 mA range)
Loop Resistance 500 ohms maximum
Ranges 4 ... 20 mA (0 to 4095) 4 ... 20 mA (0 to 16000)
0 ... 20 mA (0 to 20000) 0 ... 25 mA (0 to 25000)
Resolution 15 bits within 4 ... 20 mA
Accuracy Drift
w/Temperature
Typical: 40 PPM/° C.
Maximum: 70 PPM/° C
Accuracy Error @ 25° C +/- 0.2% of full scale
Linearity +/- 1 LSB
Isolation
Channel to Channel None
Channel to Bus 1780 Vac RMS for 1 minute
Update Time 4 ms - for all channels
Settling Time 1 ms to +/- 0.1% of the final value
Bus Current Required 2.5 Amps
Power Dissipation 12.5 W
External Power Not required for this module
Fault Detection Open circuit in 4 ... 20 mA range