Progressive Industries EMS-LCHW50 User manual

Electrical Management System (EMS)
EMS-LCHW30 & EMS-LCHW50
Instruction Manual
EMS-LCHW50
EMS-LCHW30
!CAUTION These instructions are intended to provide assistance with the installation
of this product, and are not a substitute for a more comprehensive understanding
of electrical systems. We strongly recommend that a certied electrician perform the
installation of this product. Improper installation may void warranty.

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INSTRUCTION MANUAL: ELECTRICAL MANAGEMENT SYSTEM (EMS)
Features
• High/Low Voltage Protection: Whenever AC power falls below 104 volts, or rises
above 132 volts, the EMS automatically shuts down power to the RV. The EMS will
monitor the power and once the AC power rises above 104 volts, or drops below
the 132 volt level the time delay indicator ashes for the preset time and then
automatically restores power to the RV.
• Time Delay for A/C Compressor: If AC power is interrupted or the EMS detects a
fault condition, the built in time delay is activated. There are two settings on the
EMS: one is 136 seconds (02:16), and the other is 15 seconds. Consult your air
conditioner manual to see if it has a time delay built in. If so, use the 15 second
delay, if not, use the 136-second delay. The factory setting is 15 seconds.
• 3-Mode Surge Protection (EMS-LCHW30): This feature provides full surge
protection L-N, L-G, and N-G. Total Joule rating is 1,790J and 44,000A surge current.
Response time <1 Nano second.
• 5-Mode Surge Protection (EMS-LCHW50): This feature provides full surge
protection L-N, L-N, L-G, L-L, and N-G. Joule rating is 3,580J and 88,000A surge
current. Response time <1 Nano second.
• Surge Indicator: In the event of a power surge and the surge protector circuit
is damaged within the EMS-L-N or L-G the digital error code will read E 10. This
indicates the EMS needs to be serviced.
• Reverse Polarity Protection: If AC power has a reverse polarity condition, the EMS
will not allow power to the RV and the error code will read E 1.
• Open Neutral Protection: If AC power has an open neutral, the display will not light
and the EMS will not allow power to the RV.
• Open Ground Protection: If AC power has an open ground condition, the EMS will
read an error code of E 2, and power will not be allowed to the RV.
• AC Frequency Protection: If AC power frequency deviates plus/minus 9 hertz from
60 cycles per second, the EMS will shut down AC power. An Error code of E 7 will
be displayed when the frequency is high; and an Error code of E 8 will be displayed
when frequency is low.
• Accidental 240V Protection: If 240 volts is detected when plugging into AC power
the EMS will NOT allow power to the RV. If this condition occurs while power is
applied to the RV, the EMS shuts o power instantly. The display will read the
voltage and E 3 for the error. NEVER BYPASS THE EMS WHEN THIS OCCURS.
• Display: Continuously scrolls the AC power information, including voltage,
current, frequency, error codes and previous errors. Each reading is displayed
for two (2) seconds.
• Previous Error Code: Previous error code (PE) indicates what error occurred
and why power was interrupted. To delete code, disconnect power from EMS.
• ByPass: This switch is located on the remote display and allows the user to
bypass the EMS in the event of failure, thus allowing AC power into the RV.
This does not disable the surge protection portion of the EMS; however, all
other features are disabled.

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INSTRUCTION MANUAL: ELECTRICAL MANAGEMENT SYSTEM (EMS)
• Modular Design: Replacement parts are designed for simple plug-and-play making
repairs extremely user friendly.
• Microprocessor Controlled: The computer and remote display are driven by state-
of-the-art microprocessors that are programmed with software to drive the entire
EMS unit.
Warnings
• RV wiring is dierent than house wiring; in an RV, neutral and ground conductors
are isolated whereas in a house they are bonded at the service panel. Therefore;
never connect neutral and ground. The result will cause a ground fault condition,
electric shock, and/or a re hazard. This does not stop you from using a
“generator plug” that ties together neutral and ground as this is perfectly safe.
• Do not exceed the rating on the EMS for any reason. These devices are designed
to be reduced down to 120V/15A and maintain full protection.
• Do not modify the EMS in any way as this will void the warranty, compromise
protection and could result in possible shock, and/or a re hazard.
• It is important to always check the pedestal power outlet for charring; this
condition means the AC receptacle is providing a weak connection. Should this
condition exists, DO NOT USE as it could result in possible melting of the RV
power plug.
• Progressive Industries recommends you have a certied electrician perform the
installation of the EMS unit.
• All AC power extension cords in conjunction with your EMS unit should be rated
10 gauge for 120V, 30A systems or 6 gauge for 240V, 50A systems and rated for
outdoor use to reduce the risk of electrical shock. We recommend the length not
to exceed 20-25’. Small gauge cable will have a higher resistance and can result in
voltage loss or an electrical re.
• Whenever servicing or installing the EMS, or any other AC powered device, make
sure AC power is disconnected.
• Never solder the ends of the wires you attach during installation, this includes
any red, black and/or white wires.
• Never plug the EMS into an inverter.

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INSTRUCTION MANUAL: ELECTRICAL MANAGEMENT SYSTEM (EMS)
1) Unplug RV from AC power and be sure generator is o.
2) Determine a location for the EMS control box.
3) Cut the RV power cord about three (3) inches greater than the distance from the
junction box to the desired location of the EMS control box. Then strip back the
outer insulation three (3) inches on input, and three (3) inches on output cable.
See visual references on page 9.
4) Strip back each conductor 3/8" on both stripped ends and attach ring terminals to
green ground wires. If this wire is a solid wire, do not use ring terminals. Loop the
wire around the ground screw.
5) Remove the lid from the EMS. Inside the unit will be a display, cable and pack of
screws. Back o the six set screws from top of contactor (L1, L2, etc.).
6) Take your long cable with the plug end and connect it to the input side by sliding
through the wire restraint on the end of the EMS control box. Next connect the
wires to the contactor by attaching black to L1, white to L2, red to L3, and green
to ground screw on side of box. Torque down set screws and ground nut to
secure connections.
7) Take the short cable coming from the junction box by sliding it through the wire
restraint output side of the EMS control box. Next slide the black wire through the
current sensor containing the green mark and connect to T1, then connect the
white wire to T2. Next slide the red wire through the other sensor and attach to T3.
The current sensor(s) can be oriented in either direction. Attach the green ground
wire to the ground screw on side of box. Make sure the wire colors adjacent
to each other match up. Torque down set screws and ground nut to secure
connections.
8) Double check all connections and make sure they are secure.
9) Remove the two screws on contactor where marked L1, L2, etc. Next remove the
top plastic plate with markings. Examine inside ensuring there are no loose plastic
pieces inside the contactor. If so, remove and re-install cover with two screws. See
visual references on page 9.
!CAUTION If you break o a tab and do not remove it, this may stop the contactor
from working and allow 240 volts in the RV.
Visual Photo Library - LCHW50C: page 9 | LCHW30C: page 10
Wiring Diagram - LCHW50C: page 11 | LCHW30C: page 11
For installation, in addition to the EMS Kit, you will need:
• 6 mounting screws
• In some cases you will need a jumper cable, length to be
determined based on the placement of the EMS.
• Always use #10 wire for the LCHW30C & #6 wire for the LCHW50C.
Installation Instructions Before Transfer Box

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INSTRUCTION MANUAL: ELECTRICAL MANAGEMENT SYSTEM (EMS)
10) Secure cable ends by tightening down strain reliefs ove the input and output wires.
Do not over tighten as this could cut through the insulation and cause a short.
11) Set time delay jumper on the circuit board. The factory setting is for 15 seconds.
Remove jumper to set for 136 seconds (02:16). See Features Section on time delay
to determine which to use.
12) Plug in remote display and cable. (This cable is not a phone cable, but rather a data
cable). NEVER PLUG IN DISPLAY WHILE RV POWER IS ON.
13) Attach EMS lid with the six black machine screws provided.
14) Mount the EMS control box.
15) Installation is complete. Next, plug in and follow operating instructions.
Visual Photo Library - LCHW50C: page 9 | LCHW30C: page 10
Wiring Diagram - LCHW50C: page 11 | LCHW30C: page 11
For installation, in addition to the EMS Kit, you will need:
• 4 mounting screws
• In some cases you will need a jumper cable, length to be determined
based on the placement of the EMS.
• Always use #10 wire for LCHW30 models and #6 wire for LCHW50 models.
• Surge & Electrical Protection units are for Recreational Vehicles (RV) only.
1) Unplug RV from the AC power and be sure generator is o.
2) Locate transfer switch box; determine where the EMS control box will be mounted.
3) Measure the distance between the transfer switch and the control box and add one
(1) foot. This is the length of cable that will be required for the installation. Make
sure 6 gauge, 4 conductor cables are used.
4) Remove lid from transfer box, disconnect and remove the output cable.
5) Take jumper cable and strip back one end three (3) inches and the other end the
same as the end removed from the transfer box. The cable removed from the
transfer box must have at least three (3) inches of the outer insulation removed.
See visual references on page 9.
6) Strip back all conductors 3/8" and attach ring terminals to green ground wires (see
visual references on page 9). If this wire is solid wire, do not use ring terminals.
Loop the wire around the screw.
7) Remove the lid from unit. Inside the unit will be a digital display, cable and pack of
screws. Back o the six set screws from top of contactor (L1, L2, etc.).
Installation After Transfer Box for Protection
from both Generator and AC Power

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INSTRUCTION MANUAL: ELECTRICAL MANAGEMENT SYSTEM (EMS)
8) Take the jumper cable and connect it to the input side by sliding through the wire
restraint on the end of the EMS control box and then connect the black wire to L1;
white to L2; red to L3, green to ground screw. See visual references on page 9.
Torque down set screws and ground nut to secure connections.
9) The cable that came from the transfer box connects to the output side of the EMS
control box in the same manner. Next slide the black wire through the current
sensor containing the green mark and connect to T1 and then connect the white
wire to T2. Now slide the red wire through the other current sensor and attach to
T3. The current sensor(s) can be oriented in either direction. Next, attach the green
ground wire to the ground screw on the side of box (see visual references on page
9). Make sure the conductor’s colors match up across from each other. Torque
down the set screws and ground nut to secure connections.
10) Connect the loose end of the jumper cable to the transfer switch. See wiring
diagram on transfer switch if needed.
11) Double check all connections to ensure they are secure.
12) Secure cable ends by tightening down strain reliefs over the input and output
wires. Do not over tighten as this could bite through insulation and cause a short.
13) Set time delay jumper on the circuit board. Factory setting is for 15 seconds.
Remove jumper to change setting to 136 seconds (02:16). See Features Section on
time delay to determine which to use. See visual references on page 9.
14) Plug in digital remote and data cable (this cable is not a phone cable, but rather a
data cable). NEVER PLUG IN THE DISPLAY WHILE RV POWER IS ON.
15) Attach lid with the six black machine screws provided and attach transfer switch lid.
16) Mount the EMS control box.
17) Installation is complete. Next, plug in and follow operating instructions.
Operating Instructions
1) Plug into A/C power.
2) Digital display will read 888 for one second and then begin scrolling the voltage,
amps, line frequency and error code, if any. In addition, the time delay light will
ash while the EMS is going through its countdown and will stop when the unit
engages (bottom right hand corner.) If delay light does not ash, a fault condition
is present. Refer to the Error Code Chart (page 7) to determine the problem
with the AC power.
3) You may notice when rst plugging in, the display may read E 9. This indicates the
display has not received the data from the computer yet. Do not be alarmed, this
is normal. By the next scroll through, it should read E 0 if the AC power is normal.
4) The digital display will give you a three digit number indicating your line
voltage. Next, it will give you a “0A” reading indicating current (amps). Current
(amps) will read zero until the time delay is complete (136 seconds or 15
seconds, depending on your settings). The output power will remain o until
the time delay is nished. Then you will notice a number between 0 and 50. This

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INSTRUCTION MANUAL: ELECTRICAL MANAGEMENT SYSTEM (EMS)
number indicates how many amps the RV is drawing. Next, you will notice “60H”,
indicating your line frequency. This number should remain fairly consistent;
however, it may read plus/minus one or two. Lastly, note the E code. E 0 is normal
and only when E 0 or E 10 is present will the delay light ash and allow power to
the RV. Refer to the Error code chart card that was provided or see Error Code
Chart for additional information.
5) Verify the error code E 0 is displayed and set up is now complete.
NOTE: If the wiring reads anything dierent than correct, the EMS will not turn on and
we recommend you move to a dierent source of AC power or use your generator
power. Also, if power is below 104 volts or above 132 volts, the EMS will not turn on,
and we recommend using your generator power.
Display Code Chart
The EMS display will indicate multiple electrical characteristics. Examples of these
characteristics are listed below:
30A 50A
120 - Voltage
7A - Amperage
60H - Frequency
E0 - Error Code = 0
(Normal operation)
PE3 - Previous Error Code = E3
(This error has been corrected)
L1 - Line 1 Characteristics
120 - Line 1 Voltage
7A - Line 1 Amperage
L2 - Line 2 Characteristics
118 - Line 2 Voltage
5A - Line 2 Amperage
60H - Frequency
E0 - Error Code = 0
(Normal operation)
PE X - Previous Error Code = E3
(This error has been corrected)
NOTE: If the display indicates an error code other than E0 or E10, the EMS will not
allow power to the RV.
Error Code Chart
E 0 - Normal Operating Condition
E 1 - Reverse Polarity (hot and neutral wires reversed)
E 2 - Open Ground (no ground wire connection)
E 3 - Line 1 High Voltage (line voltage above 132V)
E 4 - Line 1 Low Voltage (line voltage below 104V)
E 5*- Line 2 Voltage High (line voltage above 132)
E 6*- Line 2 Voltage Low (line voltage below 104 volts)
E 7 - Line Frequency High (line frequency above 69 cycles per second)
E 8 - Line Frequency Low (line frequency below 51 cycles per second)
E 9 - Data Link Down (call technical support)
E10 - Replace Surge Protector Module (call technical support)
* Codes only apply to EMS-LCHW50 models

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INSTRUCTION MANUAL: ELECTRICAL MANAGEMENT SYSTEM (EMS)
Note: If the EMS cuts the power to the RV it will show a PE code following the E code.
This denotes the previous error or why the EMS shut down. Example: The EMS cuts
power for low voltage on Line 1, and then the power is restored. The Error Code reads
E 0, but the PE code reads PE 4 which tells the user low voltage was the reason for
the EMS previously cutting power. This PE error code will be deleted when power is
disconnected from the EMS.
Accidental 240 volt Protection: Should this condition occur, the display will read 240
volts instead of displaying the voltage and the error code message will read E 3. AC
power will shut down instantly. DO NOT UNDER ANY CIRCUMSTANCES BYPASS THE
EMS; OTHERWISE, THIS WILL RESULT IN SEVERE DAMAGE TO THE RV.
Troubleshooting Guide
Common installation mistakes:
1) Check connections. Input is the plug side of the RV and black should be attached
to L1, white to L2. Output (going to the RV) should match up. T1 is black, T2 white.
The green ground get attached to the input and output on the side of the box.
2) Make sure the input wires are, in fact, the input wires. Connecting the output
to the input of the EMS will cause the device to malfunction.
3) If the EMS is still not functioning at this point, follow instructions below prior
to calling Progressive Industries Technical Support.
In order for the on-call Technician to help troubleshoot the problem(s) you are
experiencing and render the best possible solution, it is necessary you be at your
RV when you place your call.
1) If the display is illuminated and scrolling information, note the Error Code. If
there is an Error code of 1-9, the device will interrupt the power. See Error Chart
for denition of AC power problem. The device being o when an Error Code is
present indicates the product is working properly and protecting your coach.
2) If the display is illuminated and reading Error code E 0, and yet no power is
present in the coach, please contact Technical Support. You must wait for the
time delay light to stop ashing.
3) If the display is not illuminated and power is in the coach there is a connection
issue between the display and the main control box. Contact Technical Support.
Technical Support can only help if the above information is provided; therefore,
please do not call until this information is obtained. Again, it is necessary for your
to be at the RV when you place your call. To recap...
1) Are the connections correct?
2) What is the Error Code message being displayed?
3) Is the delay indicator ashing?

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INSTRUCTION MANUAL: ELECTRICAL MANAGEMENT SYSTEM (EMS)
Visual References
Photo Library for the EMS-LCHW50

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INSTRUCTION MANUAL: ELECTRICAL MANAGEMENT SYSTEM (EMS)
Photo Library for the EMS-LCHW30

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INSTRUCTION MANUAL: ELECTRICAL MANAGEMENT SYSTEM (EMS)
Wiring Diagram for EMS-LCHW50
Wiring Diagram for EMS-LCHW30
Power
Input
Coach Load
Output
Black
Output
White
Output
Black
Input
Input
Ground
White
Input
Red
Input Red Output
L2 T2
L3 T3
L1 T1
Relay
(Contactors)
Output
Ground
Sensor
w/green
mark
Sensor
Black
Output
White
Output
Black
Input
Input
Ground
White
Input L2 T2
L1 T1
Relay
(Contactors)
Output
Ground
Sensor
Power
Input
Coach Load
Output

INSTRUCTION MANUAL:
Electrical Management System (EMS)
EMS-LCHW30 & EMS-LCHW50
ELECTRICAL MANAGEMENT SYSTEM (EMS)
ProgressiveIndustries.net | 800.307.6702 | ZX481/PRI-6007 (1221)
Progressive Industries, Inc.
For more information regarding the Limited Lifetime Warranty,
Troubleshooting and the Warranty Claim Form visit:
www.progressiveindustries.net
Technical Support
• 800.307.6702
• [email protected]