Precision Circuits Inc

I/O Modules

Display Panels

Power Control System

Precision Circuits Inc

Service

50A GEN

30A 20A

Status

W/H

A/C-2

A/C-1

SELECT

00-10024-000 00-10024-100

120V Energy Management features usually found in high end Class A Motor homes are now made affordable for all RV's including Class C and Trailer Market. The

Mini-PCS monitors the total AC current of an RV and prevents circuit breaker tripping by momentarily shedding up to four loads. As the owner turns on additional appliances such as a Microwave, Coffee Pot, or Hair Dryer, the Mini-PCS can shed two 120VAC appliances such as the Refrigerator and Water Heater, then if additional reduction in power is required the second air conditioner, and lastly the first air conditioner is shed. As the owner selected appliances are turned off, the Mini-PCS will automatically turn power back on to each of the shed loads in reverse sequence. The

Mini-PCS will constantly monitor 120VAC RV power and shed and restore power to the four controlled loads.

Power Control System

Precision Circuits Inc

Service Status

50A GEN

30A 20A

SELECT

REFR

W/H

A/C-2

A/C-1

Power Control System

AC Amps

Precision Circuits Inc

Service Status

50A GEN

30A 20A

SELECT

REFR

W/H

A/C-2

A/C-1

The I/O Module is installed inside any circuit breaker panel and fits into a standard 3/4" knock-out hole. The screw terminals are used to make the 120VAC connections. Outside the circuit breaker panel a data cable is connected through the 3/4" knock-out which goes to the Display Panel. The Display Panel has a Data connector and also another connector to control the air conditioner units through low voltage signals.

Key Features:

1. Helps owners who are use to 50amp service, deal with the common situation of camp grounds where only

30amp service is available.

2. Limits total current to 30 amps, when 50amp service is not available.

3. Minimizes Circuit Breaker Tripping.

4. Monitors current draw for entire RV including owner added loads.

5. Learns controlled appliance current draw.

6. Allows 2 air conditioners to run on 30 amp service when other appliances are not in use.

7. I/O Module fits into a standard 3/4" knock-out

Two Relays capable of 120VAC 18 Amp load.

8. 120VAC Sense

I/O Module has built in 120VAC sense circuitry so that it knows when shore power is available and does not draw on the battery when dry camping. No AC wall adaptor or other sensors required.

9. Display Panel has built in relays to control two air conditioners, no other modules required.

10. All relays are normally closed allowing full operation of appliance in case of fault.

700 South Road Lisle, IL 60532 www.PrecisionCircuitsInc.com 630-240-9832 Rev C

Precision Circuits Inc

Operation:

30-amp Service -

PCS

senses 0VAC between L1 and L2.

The I/O Module has a current sensor which monitors the current on the neutral wire. When the current exceeds the

30-amp limit, because possibly the owner has turned on the

Microwave, the

Mini-PCS will limit the current by shedding appliances. Once the total RV current has dropped, for example because an owner operated appliance has been turned off, the

Mini-PCS will reverse the above procedure, returning power to appliances whose operation was not immediately critical. Appliance shed order is easily determined by the manufacturer by wiring the appliances to the appropriate number relay.

20-amp Service -

Mini-PCS senses 0VAC between L1 and L2, and the owner selects 20A on the Remote Display.

Mini-PCS

performs the same functions as above except that it limits total current to 20amps.

Generator - Mini-PCS

senses power to the

Genenerator Hour Meter. In this mode Mini-PCS assumes enough power is available and goes to sleep. It displays the fact that Gen-Set is running, that all Loads are powered.

50-amp Service - Mini-PCS senses 240VAC between

L1 and L2 to determine this mode of operation. In this mode

Mini-PCS assumes enough power is available and goes to sleep. It displays the fact that 50-amp Service is available and that all Loads are powered.

I/O Module - Features include:

!

Current Sensor

!

Two 18amp Relays

!

Power Line sensing

!

Two Screw Terminal configurations available

Remote Display - Features include:

!

Displays Service Type

!

Displays the Status of the Controlled Appliances

!

Custom Load Names available

Specifications:

Part Numbers: 00-10024-000 Mini- PCS I/O Module, w/Vertical Terminals

00-10024-100 Mini- PCS I/O Module, w/Right Angle Screw Terminals

00-10025-000 Mini-PCS Display Panel, 3 Loads, W/H, A/C-2, A/C-1

00-10025-100 Mini-PCS Display Panel, 4 Loads, Refr, W/H, A/C-2, A/C-1

00-10025-500 Mini-PCS Display Panel, Amp Meter, 4 Loads, Refr, W/H, A/C-2, A/C-1

Service type:

Relays:

Delay:

Environment:

Dimensions:

Mounting Hole:

120/240VAC max

(2) DC 16VDC, 1.0A (Display Panel, Thermostat)

(2) AC 120VAC, 18A, 1HP (I/O Module)

2 minute minimum off time on all loads

Indoor, Out of direct weather

6.25" wide, 3.20” high, 1.0” deep

5.45” wide, 2.91” high (centered with .15" clearance), .188" mount holes

Volts DC

Volts AC

Ambient Temperature

Minimum

9.0VDC

90VAC/line

Typical

12.0VDC

240VAC

Maximum

16.0VDC

135VAC/line

Display Panel Low Voltage Connector:

01 AIR COND 1 NC

02 AIR COND 1 COM

03 NO CONNECT

04 AIR COND 2 COM

05 AIR COND 2 NO

06 AIR COND 1 NO

07 GEN SET RUN

08 COACH BAT

09 GROUND

10 AIR COND 2 NC

AIR COND 2 NO

AIR COND 2 COM

NO CONNECT

AIR COND 1 COM

AIR COND 1 NC

Mating Connector: MOLEX MINI-FIT JR 10-PIN, #39-01-2100

Contact: MOLEX MINI-FIT JR 5556 18-24 AWG, 39-00-0039

AIR COND 2 NC

SYSTEM GROUND

COACH BATTERY

GEN-SET HOUR METER

AIR COND 1 NO

View of connector is from contact insertion side

Four different Air Condition Compressor wiring options are shown above. Relay Contacts are drawn in Non-Shed or Operation Mode.

Option 1, A/C sheds with Ground Signal

NC

Connect to Ground

COM

NO

Connect to Air Cond

Option 2, A/C sheds with +12V Signal

NC

Connect to +12V

COM

NO

Connect to Air Cond

Option 3, A/C operates with Ground Signal

NC

Connect to Air Cond

Connect to Ground

COM

NO

Option 4, A/C operates with +12V Signal

NC

Connect to Air Cond

Connect to +12 V

COM

NO

RJ12

4

5

6

1

2

3

Current Sense -

Current Sense +

Common

Line Sense

Relay 1 Coil

Relay 2 Coil

Data Cable

4

5

6

1

2

3

RJ12

RELAY 1

COM

VOLT SENSE

NC

COM NC

RELAY 2

R1

L1

N

L2

R2

To Load

L1 Breaker

To Neutral Bar

L2 Breaker

To Load

Route Main

Neutral Wire through this

Current Sensor

Hole.

I/O Module Screw Terminal Block Torque: 9-in-lbs

Note: The three Voltage Sense terminals must always be wired for proper

Service Type detection, even if corresponding relays are not used.

700 South Road Lisle, IL 60532 www.PrecisionCircuitsInc.com 630-240-9832