Rockwell Automation Allen-Bradley 1794-IJ2, Installation Instructions Manual

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10 Rockwell Automation Publication 1794-IN049E-EN-P - May 2022
FLEX I/O 2-input Frequency Modules Installation Instructions
Specifications
Input Specifications
Attribute Value
Number of input channels 2
Number of inputs per channel 2 - Frequency and Gate (gate used to establish direction)
Input frequency, max 1…32 kHz w/sine wave; 1…32 kHz w/square wave input
Frequency value, max 32,767 or 3,276.7 (dependent on range)
Input pulse width 20 µs
Resolution/Accuracy See Resolution and Accuracy on page 7
On-stage voltage, min 10V (24V IEC+1 proximity, encoder input or switch inputs)
On-state voltage, nom
(selected by terminal base connections)
50 mV AC, 28V AC peak - Extended Magnetic Pickup
500 mV AC, 28V AC peak - Magnetic Pickup
< 3V - Vortex Flowmeter low range
> 6V - Vortex Flowmeter high range
24V DC IEC+1 proximity or encoder input
24V DC Contact Switch input
On-state voltage, max Limited to isolated 24V DC power supply
On-state current
min
nom
max
2.0 mA
9.0 mA
10.0 mA
Off-state current, min 1.5 mA into 24V DC IEC+ terminal
Off-state voltage, max 5.0V DC on 24V DC IEC+1 terminal
Wire-off detection 0.4 mA for proximity, encoder, or contact switch with 50 k Ω shunt resistor
Frequency input impedance
> 5 k Ω for 50 mV Extended Magnetic Pickup
> 5 k Ω for 500 mV Magnetic Pickup
> 10 k Ω for 3V Vortex Flowmeter low range
> 10 k Ω for 6V Vortex Flowmeter high range
> 2.5 k Ω for 24V DC IEC+1 proximity or encoder input
> 2.5 k Ω for 24V DC Contact Switch input
Gate input impedance
> 5 K Ω for 50 mV Extended Magnetic Pickup
> 5 K Ω for 500 mV Magnetic Pickup
> 2.5 K Ω for 24V DC IEC+1 proximity or encoder input
> 2.5 K Ω for 24V DC Contact Switch input
Output Specifications
(meets IEC 1A 24V DC output specifications)
Attribute Value
Number of outputs 2 isolated
Output voltage source Customer supplied
Output voltage
min
nom
max
10V DC
24V DC
31.2V DC
Off-state voltage, max 31.2V DC
On-state current
1 mA per output min
1.0 A per channel sourced out of module max
Current Limited - All outputs can be on simultaneously without derating
Surge current 2 A for 50 ms, repeatable every 2 s
Off-state leakage, max Less than 300 µA at 31.2V DC
On-state voltage drop 0.9V DC at 1 A
Output control Outputs individually assignable to: Frequency, % Full Scale, or Acceleration Alarm
Output switching time
Triggered by frequency alarm or acceleration alarm
Turn on: Less than 0.5 ms
Turn off: Less than 1 ms