Progressive Industries Instruction Manual

Electrical Management System (EMS)

EMS-PT30X & EMS-PT50X

Features

Low Voltage Protection: Shuts down power to the RV when AC line voltage drops below 104V for longer than 6 seconds. Displays error code E4 (EMS-PT30X) or E4/E6 (EMS-PT50X). Re-applies power after voltage stabilizes and a 2 minute 16 second delay.
High Voltage Protection: Shuts down power for various overvoltage conditions:
- Above 132V but less than 140V for > 3 seconds.
- Above 140V but less than 156V after 1 second.
- Above 156V within 60 ms.
Displays error code E3 (EMS-PT30X) or E3/E5 (EMS-PT50X). Re-applies power after voltage stabilizes and a 2 minute 16 second delay.
Time Delay for A/C Compressor: A 2 minute 16 second (136 seconds) delay is activated upon initial plug-in, AC power interruption, or EMS fault to protect the air conditioning compressor.
3-Mode Surge Protection (EMS-PT30X): Protects line-to-neutral, line-to-ground, and neutral-to-ground. Total joule rating: 1,790 J. Surge current: 44,000 A. Response time: < 1 ns.
5-Mode Surge Protection (EMS-PT50X): Protects line 1-to-neutral, line 2-to-neutral, neutral-to-ground, line 1-to-line 2, and line-to-ground. Total joule rating: 3,580 J. Surge current: 88,000 A. Response time: < 1 ns.
Surge Indicator: If surge protection is damaged or depleted, the display shows error code E10. Replace the surge protector; this condition does not shut off incoming power but removes surge protection.
Reverse Polarity Protection: Detects reversed hot and neutral lines. Prevents power to RV and displays error code E1.
Open Neutral Protection: Detects a disconnected neutral wire. EMS will not turn on, display will not illuminate, and power will not be supplied to the RV.
Open Ground Protection: Detects an open ground wire or unbonded neutral/ground wires. Prevents power to RV and displays error code E2.
AC Frequency Protection: Shuts down power if AC frequency is outside 51-69 Hertz range. Displays E7 for high frequency and E8 for low frequency.
Accidental 240V Protection: Prevents RV from receiving power if 240V is detected. Displays error code E3 and the voltage. Do not bypass the EMS if this occurs.
Display: Continuously updates AC power information (voltage, current, frequency, error codes) at 2-second intervals.
Previous Error Code (PE): Indicates the last error that caused power interruption. Disconnect power from EMS to clear.
Weather Resistant: Unit is designed for outdoor use but not submersion. Can be mounted or used vertically.
Built-in Locking Bracket: Secures the EMS to the power source pedestal with a lock (e.g., bicycle cable lock) to prevent theft.

NOTE: The EMS can be used with 15A, 20A, 30A, or 50A service with the proper adapter. Power should be limited to the lower amperage rating of the power source and RV. The RV and power source circuit protection are the current limiting devices.

Warnings

RV wiring differs from house wiring; neutral and ground are isolated in RVs. Never connect neutral and ground to avoid ground fault, shock, or fire hazards.
The EMS can be used with a generator. A neutral-bonded generator is recommended.
Do not exceed the electrical rating of the EMS.
Do not modify the EMS; this voids the warranty and can cause harm or compromise protection.
When using extension cords, use appropriate gauge wire (6/4 AWG or 6/3 + 8/1 AWG for 240V/50A; 10/3 AWG for 120V/30A) rated for outdoor use. Keep cord length under 25 feet to reduce shock/fire risk.
NEVER plug the EMS into an inverter. EMS units can be used with inverter-generators.

Power Connection

WARNING: To minimize shock hazard, follow these instructions:

Turn off power to the RV at the AC power source before connecting or disconnecting the power cable.
Connect the power cable to the RV first.
Disconnect the power cable from the AC power source first.
Close the inlet cover tightly.

Maintenance Warning

Before each use, inspect the EMS plug and receptacle, the RV power cord plug, and the AC power source receptacle for signs of discoloration indicating overheating.
If any connection shows signs of overheating, replace both mating parts immediately.
Follow wiring instructions for replacement devices carefully.

Operating Instructions

Ensure power is disconnected at the AC power source. Plug the EMS unit into the AC power source receptacle.
Re-apply power to the AC power source and monitor the EMS display. The display will flash '888' for a system check, then scroll through voltage, current, frequency, and error codes (E1-E10). If no error codes (other than E0) are present, the wiring is correct and voltage is within limits. If an error code is displayed, disconnect the EMS and report the error to the park manager or a qualified technician.
If error code E0 is displayed, the AC power source is safe. Disconnect power at the AC power source. Plug the RV cord into the EMS receptacle. Ensure all connections are secure.
Re-apply power to the AC power source. If no error codes other than E0 are displayed, the 2 minute 16 second (136 seconds) timer will activate, indicated by a flashing delay indicator. After the timer expires, power is supplied to the RV. If an error code other than E0 or E10 is present, the timer will not start, and the delay indicator will not blink.
The EMS display shows various electrical characteristics. Examples include:
- EMS-PT30X: Voltage, Amperage, Frequency (60H), Error Code (E0 for normal), Previous Error Code (PE3 example).
- EMS-PT50X: Line 1 Voltage (L-1), Line 1 Amperage, Line 2 Voltage (L-2), Line 2 Amperage, Frequency (60H), Error Code (E0 for normal), Previous Error Code (PE3 example).

NOTE: If the display shows an error code other than E0 or E10, the EMS will not allow power to the RV.

Troubleshooting Guide

Error Code	Description	Troubleshooting Steps	If Error Code Remains
E0	Normal Operating Condition	None	No action required
E1	Reverse Polarity	1) Plug RV into an AC power source at a different location. 2) If error code reads "E 0", contact park manager or a qualified electrician to notify them of a fault at the original AC power source.	1) Fill out the online warranty form for a replacement unit.
E2	Open Ground	1) Plug RV into an AC power source at a different location. 2) If error code reads "E 0", contact park manager or a qualified electrician to notify them of a fault at the original AC power source.	1) Fill out the online warranty form for a replacement unit. Note: If plugged into a generator, refer to the warning section for generator information.
E3	Line 1 High Voltage	1) Plug RV into an AC power source at a different location. 2) If error code reads "E 0", contact park manager or a qualified electrician to notify them of a fault at the original AC power source.	1) Verify AC power source voltage with a multi-meter or contact an electrician. 2) If voltage reading is below 132 volts and stable, fill out the online warranty form for a replacement unit.
E4	Line 1 Low Voltage	1) Plug RV into an AC power source at a different location. 2) If error code reads "E 0", contact park manager or a qualified electrician to notify them of a fault at the original AC power source.	1) Verify AC power source voltage with a multi-meter or contact an electrician. 2) If voltage reading is above 104 volts and stable, fill out the online warranty form for a replacement unit. Note: Low voltage for a short period may be due to a large load (water heater, A/C).
E5	Line 2 High Voltage	1) Plug RV into an AC power source at a different location. 2) If error code reads "E 0", contact park manager or a qualified electrician to notify them of a fault at the original AC power source. 3) Plug RV into an AC power source at a different location. 4) If error code reads "E 0", contact park manager or a qualified electrician to notify them of a fault at the original AC power source.	1) Verify AC power source voltage with a multi-meter or contact an electrician. 2) If voltage reading is below 132 volts and stable, fill out the online warranty form for a replacement unit.
E6	Line 2 Low Voltage	1) Plug RV into an AC power source at a different location. 2) If error code reads "E O", contact park manager or a qualified electrician to notify them of a fault at the original AC power source.	1) Verify AC power source voltage with a multi-meter or contact an electrician. 2) If voltage reading is above 104 volts and stable, fill out the online warranty form for a replacement unit. Note: Low voltage for a short period may be due to a large load (water heater, A/C).
E7	Line Frequency High	1) Plug RV into an AC power source at a different location. 2) If error code reads "E O", contact park manager or a qualified electrician to notify them of a fault at the original AC power source.	1) If error occurs at dawn/dusk, it may be motion sensing lights. 2) Neon lights on the same circuit may cause frequency error. 3) Charging a depleted RV battery may cause frequency error. 4) If none of the above, fill out the online warranty form for a replacement unit.
E8	Line Frequency Low	1) Plug RV into an AC power source at a different location. 2) If error code reads "E O", contact park manager or a qualified electrician to notify them of a fault at the original AC power source.	1) If error occurs at dawn/dusk, it may be motion sensing lights. 2) Neon lights on the same circuit may cause frequency error. 3) Charging a depleted RV battery may cause frequency error. 4) If none of the above, fill out the online warranty form for a replacement unit.
E10	Replace Surge Protector Module	None	1) The unit has protected your RV from a surge event. It will continue to provide error code information but will not protect your RV from future surge events.

Contact Information

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
tech.progressive@oneasg.com