Alarm Lock Eagle 6000 Spezifikationen PDF herunterladen (Seite 23)

Eagle Research Corporation

REV 11.1.11 Page | 19

XA-AO ANALOG OUTPUT SPECIFICATIONS

Description

Specifications

Environmental

Operating Temperature

Operating Humidity

-40

F to +160

0 to 100%

Electrical Isolation

500 VDC or AC RMS (sine wave) between

digital interface and 4-20 mA loop

Current Loop Output

Maximum Output Current

Minimum Output Current

Maximum Supply Voltage

Minimum Supply Voltage

Resolution

Full Scale %Error (software calibrated at

4 and 20 mA and tested at room

temperature)

Temperature Drift

Error caused by RFI

24mA

3.5mA

50V

16 bits, 0.00024 mA

±0.01% max

±0.00044 mA/

F max

<1% of span shift with 2.8W 150MHz

applied at 1.7’

Digital Control Interface

Vcc Powered Input Current

Vin Powered Input Current

Communications Interface

10 uA max in idle mode; 15 mA max

during communications

30 uA higher than with Vcc power (typical)

C as described for the Phillips PCF8575

digital I/O chip

Physical

Width with mounting tabs

Width without mounting tabs

Height

Depth

4.75”

3.78”

2.14”

0.69”

WIRING THE ANALOG OUTPUT LOOPS

The external wiring to the AO module is very simple. A ribbon cable connects the AO

module to the IOT60 expansion/termination board. Commands are sent to the module

via the cable by the RTU. The 4-20mA current loop is a simple two-wire connection.

+24 VDC loop power is connected to the “+” terminal (pos. 1), and the “-”, or return

terminal (pos. 2), is connected to the field instrument to which the 4-20 mA signal is

being sent.

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