Issue
In DUI-5R modules on installed MNL-800's the LED indications on the DUI follows the contact closure signals connected to them, but the values being read based on those status points do not match. Eg. DUI-5 has LED's on for inputs 1, 3, and 5 however the controller values have 1 and 5 on only.
Product Line
TAC IA SeriesEnvironment
- WorkPlace Tech
- MNL-800
Cause
MNL-800 Inputs require an external parallel resistor (Rp=22.1 kohms, 1%) be placed across the UI input to which the DUI is attached. Some DUI models may incorporate this resistor that may be either switch or jumper selected.
Resolution
MNL-800 Inputs require an external parallel resistor (Rp=22.1 kohms, 1%) be placed across the UI input to which the DUI is attached. Some DUI models may incorporate this resistor that may be either switch or jumper selected.
For example the DUI-5R available in Asia Pacific notes the following:
Switch 1 set to ON for MNL-800 and OFF for all other controllers. In some models the switch is replaced by a jumper. Bridge the jumper for MNL-800s and leave open (jumper on one pin only) for all other MNL controllers.
