TM 5-3895-374-24-2
On/Off Inputs And Outputs
The following description applies to all 110 V AC input and output modules i.e.:
On The Blend I/O Card
A/C Run
Input
A/C Divert
Input
A/C Inject
Output
Motor Status
Input
Shutdown
Output
On The Feed I/O
Feeder A N/F
Input
Feeder B N/F
Input
Feeder C N/F
Input
Feeder D N/F
Input
NOTE
All 110 vAC output modules are normally open contacts that close on computer
control when the red LED indicator light adjacent to the module is ON.
NOTE
All 110 vAC input modules are in the ON position when energized by 110 vAC
across their input terminals. This condition should cause the red LED indicator
light adjacent to the module to light
1.
Measure the input voltage to suspect Input modules and cause by suitable external means to turn this excitation
voltage on and off. If the modules indicating light does not follow the excitation, replace the module.
2.
Measure the output voltage from the suspect output module. If the output does not follow the indicating light,
either the modules plug in fuse (adjacent to the module and directly behind the terminal strip) or the module itself
should be replaced.
page 4 - 17
