43-TV-25-30 Iss.6 GLO Aug 07 UK 255
Section 12: Technical Data & Specifications
Field IO Specification
Analogue Output
(Not available for the eZtrend QXe recorder)
Each recorder is capable of supporting analogue output function. The AO card is available
as a 2 or 4 channel option, and will plug into any of the analogue input slots.
Analogue Outputs are used to support:
• Re-transmission of Analogue Input values
• Re-transmission of Math Results
• Re-transmission of Process values
• Control Outputs
Analogue Output Specifications
• Resolution - 0.002% or better
• Accuracy - +/- 0.1% 0-500ohm load, +/- 0.25% 500ohm - 1Kohm load
• Maximum load resistance - 1Kohm
• Isolation - 300V AC
• Outputting - 0 to 20mA or 4 to 20mA (over range capability to 21mA)
• Update rate - 250mSec per channel
Pulse Input Card
The Pulse Card is available as an option, and will fit in slots normally allocated to AI cards.
The frequency output from the card can be used in a Maths block and is represented by
HPULn (where ‘n’ is from 1 to 4, when the card is fitted in the top slot)
• Frequency - 1 Hz to 25kHz, this will update once per second
• Inputs - 4 x isolated inputs.
A separate Pulse input card is not available for the eZtrend QXe recorder, however the
first 4 inputs on the Digital I/O card (option) can be used as pulse inputs.
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