.. include:: variables.rst .. _ems support: EMS Installation ================ |MODULENAME| Pro supports |PI| EMS-HW30C and EMS-HW50C Electrical Management System. The |PI| EMS modules are not included with |MODULENAME| Pro and is a separate purchase. The |MODULENAME| manual is not a replacement for the |PI| manual. You should consider the |PI| manual as the **authoritive source** when it comes to the installation and of the |PI| module. This manual only covers the integration between the |MODULENAME| module and the |PI| EMS. .. figure:: /images/emshw30c.png :align: center |PI| - EMS-HW30C - EMS and Surge Protection - Courtesy of www.progressiveindustries.net .. admonition:: Disclosure We should be absolutely clear that |COMPANYNAME| is not associated, nor has it had any contact with |PI| regarding product integration. We simply choose |PI| as we felt they had the right product and in our feeling is that EMS should be built in to travel trailers not connected externally on the pedestal. You should carefully read the Instruction manual included with your purchase of your EMS. If you have any questions regarding EMS operations, installation, maintenance, etc you should consider the |PI| manual to be the primary source of information. Any issues you have with your EMS-HW30C or EMS-HW50C should be referred directly to |PI|. .. _installing the ems: Wiring the EMS -------------- In this section we will focus on the EMS AC connections to the RV as well as connecting the |MODULENAME| Pro and the |PI| EMS module via the RJ-11 data cable. .. figure:: /images/levelup.ems.ac.and.data.connections.png :align: center |MODULENAME| Pro - AC and Data Wiring AC Power ++++++++ In this section we will focus on the AC power connections between your RV and the |PI| EMS module. This is designated in the diagram above with thick blue lines. Before you begin it would be advisable to plan out the entire project. Things to consider: * determine where the the power comes into the RV * determine the location of the AC/DC converter * is there sufficient room to mount the |PI| EMS module. * is there a suitable location for the remote display * is the data cable long enough to connect to the |MODULENAME| Pro module .. warning:: There may come a day when you will need to access the surge suppression board in the |PI| EMS, so plan to leave sufficent room to remove the lid to get access to the board. - Ensure that the power is disconnected from the RV to avoid injury. Before You Get Started ^^^^^^^^^^^^^^^^^^^^^^ * disconnect the AC Power into the RV * disconnect the DC Power to the RV. This can be done either by disconnecting the batteries or using the master disconnect switch if your RV is equipped with one. * ensure that you have a copy of the |PI| EMS module instruction manual. .. important:: If your RV is equipped with a solar installation make sure that it is not powering some of the trailer systems even if the disconnect is off. Getting Started ^^^^^^^^^^^^^^^ Refer to the |PI| EMS module instuction manual for installation, wiring, warnings, cautions and configuration details. .. figure:: /images/emswiringdiagram.png :align: center Installation Example of the |PI| EMS - 30 AMP Wiring Data Connections ++++++++++++++++ In a standard |PI| EMS installation the EMS module would be connected directly to the remote display with a single 6ft RJ-11 cable as shown below. .. figure:: /images/ems.data.standard.png :align: center In a |MODULENAME| Pro installation, the |MODULENAME| Pro is installed between the |PI| EMS Module and the |PI| remote display as shown below. The |PI| EMS module includes a 6ft RJ-11 cable. A second 6ft RJ-11 cable is supplied with your |MODULENAME| Pro module. * Use the first RJ-11 cable to connect the |PI| the module to the |MODULENAME| Pro (either one of the jacks). * Use the second RJ-11 cable to connect the |MODULENAME| Pro module to the |PI| remote display. .. figure:: /images/ems.data.levelup.png :align: center .. admonition:: Note The RJ-11 connectors on the |MODULENAME| Pro module are interchangeable. Remote Display -------------- .. figure:: /images/ems.remote.display.png :align: left :scale: 20 % The great thing about the |PI| remote display is that it is easy to read in almost any lighting conditions. The downside is that if you mount it in you RV specifically near your bed you will need to deal with the high intensity LED's and the constant flashing as the module cycles through the status of the EMS. We would recommend mounting the remote display in a cabinet or inside a closet with a door. The display should be easy to access, but you also don't want to have to deal with the flashing LED's in your RV when your trying to sleep. Eliminating the Display ----------------------- It is possible to operate the EMS without the remote display connected and just have the EMS connected into one of the two RJ-11 jacks on the |MODULENAME| Pro. You do loose the functionality of the bypass switch on the |PI| remote display. In the event of an issue with power to the pedistal it is nice to have the option to bypass the EMS. You just need to be really careful and understand the risks associated with bypassing the EMS. .. admonition:: Recommendation While it is certainly possible to operate the |PI| EMS module without the remote display, we highly recommend that you connect the Remote Display. The bypass switch functionality is too important to do without. .. danger:: If you are not sure if or when it is safe to use the bypass switch we would strongly recommend leaving it in Normal mode (not bypassed). Have a qualified RV tech or an electrician check out your installation, or have the park check the power pedestal (See Page 7 in the |PI| Manual - Accidental 240 V Protection). Device Isolation ---------------- The data connection between the |PI| EMS modules and |MODULENAME| Pro are optically isolated. This means there is no electrical connection between the two modules. The |MODULENAME| module and the EMS-HW30C or EMS-HW50C modules maintain separate grounds. The isolation protects the |MODULENAME| module from the EMS in the event of a power surge through the EMS. The |MODULENAME| module is a passive device between the EMS module and the remote screen included with the EMS module. The |MODULENAME| Pro can only report what the EMS module is reporting. |MODULENAME| **cannot and does not** control the EMS in any way. This was done intentionaly. The optical isolation eliminates any issues related to power surges from your pedestal through the EMS to the |MODULENAME| module. .. admonition:: Troubleshooting If you are having issues with your |PI| EMS. Disconnect the AC power (Shore) to the line side of the EMS before connecting or disconnecting the |PI| display module (see |PI| Manual Page 5). Reconnect the |PI| remote display directly into the |PI| EMS module (i.e. bypass the |MODULENAME| Pro module) to check if the problem still persists. If the problem persists and |MODULENAME| Pro has been disconnected then please contact |PI| support directly for assistance. .. danger:: If you are not 100 percent comfortable with the installation, have your EMS installed by a certified electrician or take your trailer to an RV dealer or repair center.