Publication 1794-6.5.11 - November 1997
How to Install Your Frequency Input Module
2
-11
Wiring connections for the 1794-IJ2 Frequency Input Module
Channel 0 Terminals
5
Channel 1 Terminals
5
Types of Inputs
Power
Input
RET
6
Power
Input
RET
6
GND
5
Frequency
24V dc IEC1+ Proximity
1, 2
7
6
3
8
9
12
24V dc Contact Switch
3
7
6
3
8
9
12
500mV ac Magnetic Pickup
7
7
5
3
8
10
12
50mV ac Magnetic Pickup
4
7
7
5
3
8
10
12
6V ac Vortex
2
1
3
13
14
12
3V ac Vortex
2
0
3
13
15
12
Gate
24V dc IEC1
+
Proximity
1, 2
24
23
20
25
26
29
24V dc Contact Switch
3
24
23
20
25
26
29
500mV ac Magnetic Pickup
24
22
20
25
27
29
50mV ac Magnetic Pickup
4
24
22
20
25
27
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 or G for wire-off detection (0.4mA) – (
≈
50K
Ω
)
4
Add a jumper between 50mV and RET (Frequency – channel 0 = 4 to 3; channel 1 = 11 to 12)
(Gate – channel 0 = 21 to 20; channel 1 = 28 to 29)
5
Connect cable shields to GND terminals.
6
All 4 RET terminals (ch 0 and 1, Freq, Gate) are internally connected together.
7
24V terminal may not be used on 2-wire magnetic devices
Channel 0 Terminals
1
Channel 1 Terminals
1
Output Alarm
Connections
Sply +
Sply
RET
Out
+
Out
RET
Sply +
Sply
RET
Out
+
Out
RET
Supply Connection
37
39
46
48
Output Connection
17
18
31
32
1
Connect cable shields to GND connections.
!
ATTENTION: Total current draw through the terminal base
unit is limited to 10A. Separate power connections to the
terminal base unit may be necessary.