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Diagnostics embedded in the Midi-PCS Including Factory Setup, Factory Test, Generator Amp
Limit, and 50-amp service detection.
Overview: Fully automatic Power Control System which requires little to no user interface. The display is
there to help the RV user understand power management and the function of the Midi-PCS. The Midi-
PCS monitors the total AC current of an RV and prevents circuit breaker tripping by momentarily shedding
up to five loads. As the user turns on additional appliances (such as a microwave, coffee pot, or hair dryer),
the Midi-PCS can shed the loads that it controls, (such as the water heater & air conditioner). As the user's
selected appliances are turned off, and a minimum of 2 minutes has expired, the Midi-PCS will
automatically turn power back on each of the shed loads in reverse sequence. The Midi-PCS will constantly
monitor 120VAC RV power and shed and restore power to the five controlled loads. The display panel has all
the brains, a data connector to the I/O module, and an additional connector to control the air conditioners
through low voltage signals. The I/O Module houses a current sensor, two relays to control 120VAC powered
appliances, and Service Type detect circuitry.
Display Panel: PCI# 00-10050-000
1. Display Screen
2. Select Button
3. Scroll Button
Diagnostics: Press and Hold both the Select and Scroll buttons for 5 seconds to enter Diagnostics Mode.
S W
V e r
2 . 0 5 - 4 2 1
F a c t o r y
S e t u p
F a c t o r y
T e s t
E x i t
F a c t o r y
In Diagnostics mode, there are four main screens. Pressing Scroll button
will step you through the four different screens:
1. Displays the Software Version of the Midi-PCS.
Press Scroll to continue to next menu option.
2. Displays Factory Setup option.
Press Select to enter Factory Setup review mode.
Press Scroll to continue to next menu option.
3. Displays Factory Test option.
Press Select to enter Factory Test mode.
Press Scroll to continue to next menu option
4. Displays Exit Factory option.
Press Select to Exit Diagnostics.
Press Scroll to continue to return to the first display.
I/O Module: PCI# 00-10024-000
4. Screw Terminals
5. Current Sensor
6. Connector to Data Cable
1
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Table of Contents
Summary of Contents for Precision Circuits Midi-PCS
- Page 1 As the user turns on additional appliances (such as a microwave, coffee pot, or hair dryer), the Midi-PCS can shed the loads that it controls, (such as the water heater & air conditioner). As the user’s selected appliances are turned off, and a minimum of 2 minutes has expired, the Midi-PCS will automatically turn power back on each of the shed loads in reverse sequence.
- Page 2 Winnebago170 identifies the RV manufacturer and model 151 identifies the revision of the RV Data-2 as year 2015 release #1 of that year. This is useful information in case the Midi-PCS ever needs to be identified for replacement. Press Scroll Button to move to next Display.
- Page 3 Reference ID. Factory Test: Pressing Select while Factory Test is displayed brings the service technician to this Display. Midi-PCS can control up to 5 appliances, (+ 2 additional future relays) This section allows the user to manually control each individual appliance, shedding and restoring power to that appliance.
- Page 4 / 120volts = 45 amps) After testing all Service Types, Press Scroll button to advance to this Display. Just like in Normal operation, Midi-PCS displays total RV current. Turn on a few known appliances and observe that Amps displayed is reasonable.
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