AO-2 Analog Current Output – 4-Channel I/O Module
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AO-2 Analog Current Output 4-Channel I/O Module |
Features:
The analog current output - 4 channel module for the Series II Remote Terminal Unit provides four output channels, each capable of converting 12 bits of binary (digital) data to an analog output.
This module provides two output ranges. The default range is 4 to 20 mA with user data scaled so that a count of 0 corresponds to 4mA and a count of 32760 corresponds to 20 mA with each 1000 counts representing 0.5 µA.
A range link (on the rear of the module) selects either 4-20mA or 0-20mA for all four channels. The default condition is 4-20mA with the link on. The module provides a full 12 bits of resolution in either range.
Overview
- 4 Analog Current Outputs
- 12-Bit Resolution
- 0-20 or 4-20mA Outputs
- 3kV Field to Logic Isolation
- Channel to Channel Isolation
Order Information
- AO-2-1 (Analog Output - 4 channel, 12 bit resolution)
Datasheets
Product specifications:
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General |
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| Output Current Range |
4 to 20mA and 0 to 20mA |
| Calibration |
Factory calibrated to 5µA per count |
| Supply Voltage (nominal) |
+5V and +12VDC backplane |
| Update Rate |
250 msec (all channels) Determined by I/O scan time, and is application dependent |
| Resolution |
12 bit (no sign bit) |
| Absolute Accuracy |
(0 to 20 mA) +/- 10µA at 25 DegC |
| User Load |
0 to 850 ohms |
| Output Load Capacitance |
2000 pF |
| Output Load Inductance |
1H |
| Isolation |
3000 Volts RMS between field and logic
1500 Volts RMS between channels |
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Environmental |
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| Operating Temperature |
-20°C to 70°C / -4°F to 158°F |
| Storage Temperature |
-40°C to 85°C / -40°F to 185°F |
| Operating Humidity |
5 to 98% RH non-condensing |
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