Publication 1794-6.5.11 - November 1997
How to Install Your Frequency Input Module
2
-13
Module Indicators
The Frequency Input module has one status indicator (PWR) that is on
when power is applied to the module, one fault indicator (F) for each
input, and an input status indicator for each input (0 or 1) and an output
indicator for each output (0 or 1).
A = Input indicators for each input channel.
B = Insertable label for writing individual I/O assignments.
C = Wire-off Fault indicators for each input channel.
D = Output indicators for each output channel.
E = Power/status indicator – indicates power applied to module and sta-
tus of module.
Chapter Summary
In this chapter, we told you how to install your input module in an
existing programmable controller system and how to wire to the terminal
base units.
Indicator
Indication
Description
Input (0 or 1)
Frequency or Gate
Off/Dark
Input turned off, input not used, wire disconnected
On/Yellow
Input turned on
Fault (F)
Frequency or Gate
Off/Dark
Wire connected, normal operation
On/Red flash
Wire disconnected, fault condition (for IEC 1
+
or
switch contacts with shunt resistor)
Output Alarm (0 or 1)
Off/Dark
Output turned off
On/Yellow
Output turned on (logic drive on)
Module Power (OK)
Off/Dark
24V power off, or 5V logic power problem
Solid Green
Module OK, normal operating mode
Solid Red
Module fault, outputs disabled
E
B
FREQ
GATE
OK
0
FREQUENCY INPUT 2 CHANNEL
1
1794-IJ2
Allen-Bradley
F
0
F
FREQ
GATE
1
F
1
F
OUT
0
OUT
1
C
D
A