Rockwell Automation 1794-IJ2XT 2 Input Frequency Module Installation Instructions - Manual (Page 3)

3
Publication 1794-IN049D-EN-P - January 2009
Resolution and Accuracy
+1Hz or +0.1Hz (depending on frequency range bit setting), or + accuracy
specification listed below, whichever is greater.
Input Map
Output Map
Types of Inputs Channel 0 Terminals 5 Channel 1 Terminals 5
Power Input RET 6 Power Input RET 6 GND 5
Frequency
24V DC IEC 1+ Proximity 1,2 A-7 A-6 A-3 A-8 A-9 A-12
24V DC Contact Switch 3 A-7 A-6 A-3 A-8 A-9 A-12
500 mV AC Magnetic Pickup A-7 A-5 A-3 A-8 A-10 A-12
50 mV AC Magnetic Pickup 4 A-7 A-5 A-3 A-8 A-10 A-12
6V AC Vortex A-2 A-1 A-3 A-13 A-14 A-12
3V AC Vortex A-2 A-0 A-3 A-13 A-15 A-12
Gate
24V DC IEC 1+ Proximity 1,2 B-24 B-23 B-20 B-25 B-26 B-29
24V DC Contact Switch 3 B-24 B-23 B-20 B-25 B-26 B-29
500 mV DC Magnetic Pickup B-24 B-22 B-20 B-25 B-27 B-29
50 mV DC Magnetic Pickup 4 B-24 B-22 B-20 B-25 B-27 B-29
1 As defined by standard IEC 1131-2.
2 RET not used on 2-wire devices.
3 Add external resistor from 24V to F (A-6) or G (A-9) for wire-off detection (0.4 mA).
4 Add jumper between 50 mV and RET (frequency - channel 0 = A-4 to A-3; channel 1 = A-11 to
A-12)
(gate - channel 0 = B-21 to B-20; channel 1 = B-28 to B-29).
5 Connect cable shields to GND terminals.
6 All 4 RET terminals (ch0 and 1, Freq. and Gate) are internally connected together.
Accuracy
Min. Freq.
Sample
Time (ms)
Sampling
Accuracy Time
Base
Accuracy Worst
Case Total
Accuracy Deviation in Hz Due
to Total Accuracy Resolution
1.0-3276.7
Freq.
Range
(in Hz)
1-32767
Freq.
Range
(in Hz)
2 +0.02% +0.0225% +0.0425 +0.1-1.4 +1-14 0.01%
4 +0.01% +0.0225% +0.0325 +0.1-1.1 +1-11 0.005%
5 +0.008% +0.0225% +0.0305 +0.1-1.0 +1-10 0.004%
10 +0.004% +0.0225% +0.0265 +0.1-0.9 +1-9 0.002%
20 +0.002% +0.0225% +0.0245 +0.1-0.8 +1-8 0.001%
50 +0.0008% +0.0225% +0.0233 +0.1-0.8 +1-8 0.0004%
100 +0.0004% +0.0225% +0.0229 +0.1-0.8 +1-8 0.0002%
200 +0.0002% +0.0225% +0.0227 +0.1-0.7 +1-7 0.0001%
500 +0.00008% +0.0225% +0.02258 +0.1-0.7 +1-7 0.00004%
1000 +0.00004% +0.0225% +0.02254 +0.1-0.7 +1-7 0.00002%
2
minimum frequency sample time
% Resolution =
count frequency X minimum frequency sample time
Accuracy % is defined as:
Resolution % is defined as:
% Accuracy =
count frequency
1
100
minimum frequency
sample time
2
100 1 -
+
Bit
⇒
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Wor
d
⇓
Read
0 Frequency 0…32,767 or 0.0…3,276.7 Channel 0
1 % Full Scale 0.0 … 3,276.7% Channel 0 or Acceleration -32,768 … 32,767 Channel 0
2 Frequency 0 … 32,767 or 0.0 … 3,276.7 Channel 1
3 % Full Scale 0.0 … 3,276.7% Channel 1 or Acceleration -32,768 … 32,767 Channel 1
4 R R Direction
Ch 0 GS
Ch 0
F/A
Ch 0 WO
Ch 0 MPA
Ch 0 R R Directio
n Ch 1 GS
Ch 1
F/A
Ch 1 WO
Ch 1 MPA
Ch 1
5 Reserved Diagnostic Status
Channel 0
Reserved Diagnostic Status
Channel 1
6 Reserved
Where:
GS = Gate state
F/A = Frequency/Accel alarm
WO = Wire-off alarm
MPA = Missing pulse alarm
R = Reserved
Dec
. 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Oct. 17 16 15 14 13 12 11 10 7 6 5 4 3 2 1 0
0 CF SSM FR
Ch
0
Number of
pulses to
terminate
sampling 0-7
Ch 0 MPM 0-3
Ch 0 R LF FR
Ch
1
Number of
pulses to
terminate
sampling 0-7 Ch
1 MPM
0-3
Ch 1
1 Maximum Frequency 0 - 32.767 or 0.0 - 3,276.7 - or -
Absolute Value of Acceleration - 0 to 32767 Channel 0
2 Frequency Scaling Divisor 0-255 Channel 0 Frequency Scaling Multiplier 0-255
Channel 0
3 WOF
G Ch
0 WOF
F Ch
0 IGI
Ch
0 IFI
Ch
0 Minimum Frequency
Sample Time 0-15
Ch 0 Init
St
Up
Ch 0 ACT
0-3
Ch 0
F/AA
S Ch
0 MPDM
0-3 Ch 0 WOFM
0-3 Ch
0
4 Maximum Frequency 0 - 32,767 or 0.0 - 3,276.7 - or -
Absolute Value of Acceleration - 0 to 32,767 Channel 1
5 Frequency Scaling Divisor 0-255 Channel 1 Frequency Scaling Multiplier 0-255
Channel 1
6 WOF
G Ch
1 WOF
F Ch
1 IGI
Ch
1 IFI
Ch
1 Minimum Frequency
Sample Time 0-15
Ch 1 Init
St
Up
Ch 1 ACT
0-3
Ch 1
F/AA
S Ch
1 MPDM
0-3 Ch 1 WOFM
0-3 Ch
1
7 Reserved
Where:CF = Communication Fault
SSM = Safe state mode
FR = Frequency range
MPM = Missing pulse multiplier
LF = Local Fault mode
F/AAS = Frequency/Accel alarm select
WOFF = Wire-off fault frequency
WOFG = Wire-off fault gate
WOFM = Wire-off fault mode
IGI = Invert gate input
IFI = Invert frequency input
ACT = Acceleration calculation time
MPDM = Missing pulse delay multiplier
R = Reserved