Rockwell-automation 1797-IJ2 FLEX Ex Frequency Input Module Manual de usuario descargar pdf (Pagina 16)

16 FLEX Ex Frequency Input Module

Publication

1797-5.9 - June 2010

Frequency input characteristics Magnetic pickup: 50 mV, 500 mV

NAMUR: 8V, 8 mA

Flowmeter: low <

3V, high >6V

Frequency input impedance rating >5 k magnetic pickup

>10 Kflowmeter

Outputs 2 relay outputs

Output switching time <10 ms

Gate inputs 2

Input (intrinsically safe) to DIN19234

(NAMUR)

No load voltage short

Circuit current

Switching point/

Switching hysteresis

Input pulse length/

Pulse pause

Lead breakage monitoring

8V dc/8 mA

1.2…2.1 mA/0.2 mA

>20 s/>20 s

Breakage current <0.35 mA

Indicators 6 yellow status indicators

4 red fault indicators

1 green module power indicator

Output (intrinsically safe)

(16 pin male and female Flexbus

connector)

< 5.8V

< 400 mA

< Negligible

< 2.64 F

Isolation path

Input to power supply

Input to Flexbus

Input to input

Output to power supply

Output to Flexbus

Output to output

Isolation Type

Galvanic to DIN EN 60079-11

None

Galvanic to DIN EN 60079-11

Power supply

(+V, -V intrinsically safe)

< 9.5V dc

< 1 A

= Negligible

Module field-side power

consumption

4.25 W

Power dissipation 4.25 W

Specifications continued on next page.

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