Rockwell-automation 1797-IJ2 FLEX Ex Frequency Input Module Uživatelský manuál stáhnout pdf (Strana 15)

FLEX Ex Frequency Input Module 15

Publication

1797-5.9 - June 2010

Specifications

Specifications - 1797-IJ2 Frequency Input Module

Number of inputs 2 frequency channels

2 gate channels

IS input type Ex ia IIB/IIC T4

AEx ia IIC T4

Class I, II, III Division 1 Group A to G T4

IS module type Ex ib IIB/IIC T4

AEx ib IIC T4

Class I, Division 1 Group A to D T4

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

Inputs to flowmeter

Input signal

Voltage available at 20 mA

Threshold 3V or 6V selectable

>15V

Inputs to magnetic pickup input

signal

50 mV or 500 mV selectable

Processing time 

4 ms

Input frequency 1.0…32,767 Hz

Resolution and accuracy Minimum Frequency Resolution

Sampling Time (ms) Accuracy (%)

2 0.043

4 0.033

5 0.031

10 0.027

20 0.025

50 0.023

100 0.023

200 0.023

500 0.023

1000 0.023

Specifications continued on next page.

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