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Progressive Industries, Inc.
EMS
Electrical Management System
Complete Installation Guide
and
Operating Instructions for:
Model EMS-LCHW50C
Rated at 240V/50A
Manufactured by:
Progressive Industries, Inc.
414B Airport Boulevard
Morrisville, NC 27560
(919) 462-8280
www.progressiveindustries.net
Proudly manufactured in the U.S.A.
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 flashes 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.
5 Mode Surge Protection
This feature provides full surge protection L-N, L-N, L-G, L-L and N-G. Total Joule rating is
3,580 and 88,000A surge current. Response time of <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 display error code will read E-10. This indicates that the EMS needs to be
serviced.
Reverse Polarity Protection
If AC power is a reverse polarity condition, the EMS will not allow power to the RV and the
error code will read E1.
Open Neutral Protection
If AC power has an open neutral condition, 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 E2, 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 E7 will be displayed when the frequency is high; and an
Error Code of E8 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 off 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
This feature tells the user what the previous error was and why power was interrupted to the RV.
To read a Previous Error Code, put a “P” in front of the “E” code. This is only displayed if an
actual error occurs. The error is deleted when the power is disconnected from the EMS. .
Bypass
Enclosed blue jumper wire allows the user to bypass the computer circuit in the EMS in the event
of computer failure, thus allowing AC power into the RV. This does not disable the surge
protector portion of the EMS; however, all other features are disabled.
Modular Design
Replacement parts are designed for simple plug and play, making repairs extremely user friendly.
Microprocessor Controlled
The computer and built-in display are driven by state of the art microprocessors that are
programmed with software to drive the entire EMS unit.
Warnings
•
Do not exceed the rating on the EMS for any reason, however,
these devices are designed to be reduced down to 120V/15A, and
still maintain full protection.
•
Do not modify the EMS in any way. This will void the
warranty, compromise protection and could result in possible
shock and/or fire hazard.
•
It is important to always check the pedestal power outlet for
charring; this condition means that the AC receptacle is
providing a weak connection. DO NOT USE! It could result in
possible melting of the RV power plug.
•
Progressive Industries recommends you have a certified
electrician or an authorized dealer perform the installation of the
EMS.
•
When running extension cords from the RV to AC power,
always use a 6 gauge cable for your 240 Volt, 50 Amp system.
Make sure that the cable is rated for outdoor use to reduce the
risk of electrical shock. Small gauge cable will have a higher
resistance and will result in voltage loss, plus it may result in an
electrical fire.
•
Whenever servicing or installing the EMS, or any other AC
powered device, make sure AC power is disconnected.
•
RV wiring is different than the wiring found in homes; the
neutral and ground conductors are isolated in the RV, unlike in a
home where they are tied together at the service panel. The
reason is: homes have a bonded ground system, whereas RV’s
do not. Therefore, never bond the neutral and ground together
for any reason. This will create a ground fault condition, and
may result in electric shock and/or fire hazard.
•
Never solder the ends of the wires that you attach during
installation. This includes the Red, Black and White wires.
•
Never plug the EMS into an inverter.
Installation Instructions Before Transfer Box Model EMS-LCHW50
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 #6 wire.
1. Unplug RV from AC power and be sure generator is off.
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
Picture A)
4. Strip back each conductor 3/8 inch on both stripped ends, (See
Picture A) and attach ring terminals to green ground wires. If
this wire is solid wire, do not use ring terminals. Loop the wire
around the ground screw.
5. Remove the lid from the EMS. Next, remove the digital display
and pack of screws and then back off 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. Then 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. (See Picture B) 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 tape and connect to T1, then connect the white wire to
T2. Now slide the red wire through the other current sensor and
attach to T3. The arrow that is on the sensor needs to face T1
and T3 and the green ground wire to the ground screw on side of
box. (See Picture B) Make sure that the wire colors match up
across from each other. 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 Picture B) Caution: If you break off a tab and do not
remove it, this may stop the contactor from working and allow
240 volts into the RV.
10. Secure cable ends by tightening down strain reliefs over the input
and output wires. Do not over tighten as this could bite 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.
(See Picture B)
12. Plug in display. (See Picture C)
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.
Installation After Transfer Box for
Protection from both Generator and AC Power.
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 #6 wire.
1. Unplug RV from the AC power and be sure generator is off.
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 Picture A)
6. Strip back all conductors 3/8 inches and attach ring terminals to
green ground wires. (See Picture A) If this wire is solid wire, do
not use ring terminals. Loop the wire around the ground screw.
7. Remove the lid from the EMS. Remove the digital display and
pack of screws and then back off the six set screws from top of
contactor. (L1, L2, etc.)
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 black to L1; white to L2; red to L3; green to ground
screw. (See Picture B) 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 tape and
connect to T1, then connect the white wire to T2. Now slide the
red wire through the other current sensor and attach to T3. The
arrow that is on the sensor needs to face T1 and T3. Next, attach
the green ground wire to the ground screw on side of box. (See
Picture B) Make sure that 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 Picture B)
14. Plug in display. (See Picture C)
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 flash while the EMS is going
through its countdown and will stop when the unit engages.
(Bottom right hand corner.)
3. You may notice when first plugging in that the display may read
E-9. Don’t worry about this, it only means that the display has not
received data from the computer yet. By the next time through it
should read E-0 if the A/C power is normal.
4. The digital display will read L-1, and then give you a three digit
number which is your Line 1 voltage, then 0A which is Line 1
current (amps). Then L-2 and a three digit number which is Line
2 voltage, then OA which is Line 2 current (amps). Current will
read zero until the time delay is complete. (136 seconds or 15
seconds, depending on your settings). Next, you will notice a
number between 0 and 35. This number indicates how many
amps the RV is drawing on each line. Next you will notice 60H
and this is your line frequency. That number should remain fairly
consistent, however, it may read plus/minus one or two. Lastly,
you will notice the E code. E-0 is normal and only if E-0 or E-10
is present will the delay light flash and allow power to the RV.
Refer to your Error Code chart that was provided or see Error
Code chart for further details.
5. Verify that Error Code E0 is displayed and set up is now
complete.
IMPORTANT:
The display will only read voltages between
approximately 78 volts and 255 volts.
NOTE: If the wiring reads anything different than correct, the EMS will
not turn on and we recommend you move to a different 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.
Error Code Chart
E-0 Normal Conditions
E-1 Reverse Polarity Condition (hot and neutral wires reversed)
E-2 Open Ground
E-3 Line 1 Voltage High (Line voltage above 132 volts)
E-4 Line 1 Voltage Low (Line voltage below 104 volts)
E-5 Line 2 Voltage High (Line voltage above 132 volts)
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
E-10 Replace Surge Protector Module
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 E0, but the PE code reads PE4 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 and red to L3. Output
(going to the RV) should match up. T1 is black, T2 white and
T3 is red. The green ground gets attached to the input and output
on the side of the box.
2. Make sure that 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 Technical Support.
In order for the on-call Technician to troubleshoot the problem(s) you
are experiencing and render the best possible solution, it is necessary
that 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 definition of AC power
problem. The device being off 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 flashing.
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 you 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 flashing?
Pictures Referenced in Instructions
Picture A
_____________________________________
Green Ground Wires
Time Delay Jumper
Plastic Plate
Picture B
Pictures Referenced in Instructions (continued)
Display Socket with Display Plugged In
Picture C
_____________________________________
Wiring Diagram
Sensor Arrow
Red input
L3
T3
White input
L2
T2
Black output
L1
T1
Input Ground
Red Output
Sensor w/
no tape
White Output
Sensor w/
Green tape
Black output
Sensor Arrow
Output Ground
Progressive Industries Warranty
Progressive Industries warrants its products are free from defects in materials and
workmanship for a period of three (3) years. This is in lieu of all other warranties,
obligations, or liabilities expressed by the company. In the event that a properly installed
EMS proves defective under normal use, Progressive Industries will repair or replace the
device at its discretion.
The hardwired EMS product was specifically designed to be modular; therefore, any part
of the EMS can be replaced without removing the entire unit. For Technical Support,
please call (919) 462-8280. In order for the on-call Technician to troubleshoot the
problem(s) you are experiencing and render the best possible solution, it is necessary that
you be at your RV when you place your call.
Once Technical Support has properly diagnosed the problem, if any, a replacement part
will be sent to you. Do not remove the damaged part unless instructed to do so. This will
aid you with the installation of the replacement part(s).
When you receive your replacement part(s), inside the box will be a return address label.
Simply use the same box and the return label to return the damaged part(s).
The address below is strictly a mailing address. Please do not attempt to visit our facility
during business hours as the company is not staffed, nor equipped to handle on-site repair
work. All returns must be routed through Technical Support.
Progressive Industries, Inc.
414B Airport Boulevard
Morrisville, North Carolina 27560
The unit being returned must be properly packaged with the postage paid and include the
following information:
1)
2)
3)
4)
Date of purchase.
A detailed explanation of the problem/defect.
Your Name
Return Address and Phone Number
Progressive Industries cannot assume responsibility for acts of God, alterations,
shipping/handling, or any other factors not under the control of Progressive Industries.
Progressive Industries has no responsibility for installation, personal injury, property
damage, incidental, contingent, or consequential damages of any kind resulting from
defects or failure of the unit to function.
The remedy for breach of this warranty is limited to the repair or replacement of the
defective product at Progressive Industries’ option. In no case shall the liability
prescribed by law exceed the purchase price. Some states do not allow exclusion or
limitation of incidental or consequential damages or allow disclaimers, modifications or
limitations on how long a warranty lasts; therefore, the above warranties may not apply to
you. This warranty gives you certain legal rights, and you may have other rights, which
may vary from state to state.
(Revision E)
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