Lumity™ E3 Supervisory Control Retrofitting with E2 and E2E

Overview

This technical bulletin describes E3 retrofitting of environments with existing E2 and E2E controllers.

Preparing for Retrofit

When replacing an E2 unit with an E3, there are several major differences that must be taken into account.

1. COM 1-4 networks (the RS485 I/O networks) use the same wire and polarity for both the E2 and E2E controllers. No rewiring of the I/O network will be necessary; just unplug the COM 1-4 connectors, and plug them into the I/O port(s) on the E3 PIB (see “Transferring the COM 1-4 Networks” section below).
2. E2 and E2E units support an optional Echelon card. E3 does not currently support Echelon; therefore, any Echelon-based controllers must be replaced with BACnet or Modbus equivalent controllers that utilize BACnet or Modbus interfaces.

Note that the E3 mounting points are the same as E2E, so the fasteners can be reused for the E3 in the same mounting location.

Technical Specifications

Table 1 - E3 Specifications

E3 Dimensions

Figure 1 - E3 Dimensions: This diagram shows the physical dimensions of the E3 unit from three perspectives: front view, side view, and top view. The front view displays the screen and ports. The side view shows the depth. The top view shows the width and length. Dimensions are provided in inches and millimeters.

Transferring the COM 1-4 Networks

The COM 1-4 I/O networks on the E2 are where connections to all I/O devices, such as MultiFlex boards are made. The three networks are interchangeable, each one capable of connecting up to approximately 127 devices (contact Technical Services for verification of the maximum number of devices for your network).

The E3 adds an additional COM 3 port (COM 7) on the PIB. This COM port is electrically isolated. The COM 2 port (COM 6) is also electrically isolated. Please refer to the specification table for COM 1-4 RS485 equivalent numbering.

Table 2 - E3 RS845 COM Port Naming Translations for E2 Retrofit

E3 Termination Jumper Settings

The network termination jumpers, directly above all COM plugs on the PIB, will need to be set to the same positions as the corresponding termination jumpers on the E2/E2E. The rules for termination on E3 I/O networks are the same as the rules for E2/E2E networks. For each COM port, set the three jumpers to the (terminated) position if the port is at the end of a network segment or the hub of a star configuration, and down NO (unterminated) if the port is in the middle of a segment.

On E3, there is one set of RS485 jumpers for each RS485 port. Jumpers J16-J18 are located directly above the COM2A connector port, and jumpers J20-J22 are located directly above the COM2B port. All the RS485 termination jumpers are used to terminate the devices at the beginning and end of an RS485 Network. If the E3 is at the beginning of an RS485 I/O, MODBUS, or BACnet Network, all three of these jumpers should be set to the up position. For MODBUS and BACnet, the jumpers should all be in the top-most position (MOD). For I/O Net, the jumpers should be in the middle position (I/O). For no termination, set the jumpers to the down position (NO).

Refer to the E3 User's Manual (P/N 026-1803) for expanded communication setup information.

E3 Circuit Board and E3 PIB Retrofit Layout

Figure 2 - E3 Circuit Board and E3 PIB Retrofit Layout: This diagram illustrates the E3 circuit board and the E3 PIB (Process Interface Board). It highlights key areas such as the Ethernet network port, the unplugged ETH cable, COM 1-3 term jumpers, COM 4 term jumpers, COM 1-3 (COM 2A/2B and COM 6 and 7) connections, COM 4A and 4B connections, 24VAC power input, and the ON/OFF switch.

STEP 1: Powering Down the E2 Controller

Power down the E2 by flipping the ON/OFF power switch to the OFF position on the E2 PIB and remove all field wiring from the E2.

1. Disconnect 24VAC power connector and remove from the box.
2. Unplug the Ethernet cable and remove from the box.
3. Unplug and remove the RS485 connections and remove wires from the box.

Labeling Wires: Pro Tip - label all wires and make note to which COM ports the wires belong for quick and easy reconnections to the E3.

4. If a Digital I/O card is present, disconnect the I/O wiring and pull the wiring out of the box. Note that the I/O card is mounted with two screws. Unscrew and remove the card.
5. Unscrew the ground terminal wire (2 screws) and remove wire from the box.

Note: Before removing the E2, ensure all wires are removed from the E2 enclosure.

STEP 2: E2 Checklist

• ✔️ Power switch is in the OFF position on the E2 PIB
• ✔️ Disconnected the 24VAC power
• ✔️ Disconnected Ethernet wires
• ✔️ Disconnected RS485 comm wires
• ✔️ Disconnected Digital I/O card (if present) removed and wires removed
• ✔️ Disconnected and unscrewed the Ground terminal wires
• ✔️ Locate the screws that attach the E2 to the wall or panel and remove the E2

E2E - PIB Board

Figure 3 - E2E - PIB Board: This diagram shows the E2E PIB board with numbered components and a legend. The legend identifies: 1. RS232 Port, 2. Phone Line Jack, 3. Power ON LED, 4. Power Terminals (24VAC Class 2 only), 5. Power Switch, 6. Earth Ground, 7. Termination Jumpers (COM4A and B) - I/O Net or MODBUS, 8. RS485 COM4A and COM4B Ports, 9. Plug-In Digital I/O Card, 10. Termination Jumpers (COM6) - I/O Net or MODBUS, 11. RS485 COM6 Port, 12. RS485 COM2A and COM2B Ports, 13. Termination Jumpers (COM 2A and B) - I/O Net or MODBUS, 14. Power Interface Port, 15. MODEM/COM3 Plug-In, 16. External Power Connector (for Echelon Repeater Card).

STEP 3: Mounting the E3

Route all cables, Ethernet, RS485, ground, 24VAC, and I/O back into the box and match to the corresponding COM ports.

Pro Tip - refer to the labels on the wires.

1. Once the E2 is out of the wall or panel, mount the E3 into the same location, using the same hardware to attach to the wall or panel.
2. Attach the Ground wire to the green ground terminal and fasten by tightening down both screw terminals.
3. Reconnect the Ethernet cable to the ETH0 port on the E3 processor board.
4. Reconnect the RS485 Com Port wires.
5. If a digital I/O card is present, reinstall the I/O card on the E3 PIB using the same screws and plug the I/O wires into the I/O card terminal.
6. Reconnect the 24VC power plug.
7. Flip the 24VAC power switch on the E2 PIB to ON.

E3 PIB and MultiFlex Board Wiring

Figure 4 - E3 PIB and MultiFlex Board Wiring: This diagram illustrates the wiring connections for the E3 PIB and MultiFlex Board. It shows the E3 PIB with USB ports, termination jumpers (set to I/O Net and MOD), and connections for RS485, ground, and 24VAC power. It also depicts the MultiFlex Board with its various ports and connections, including notes on transformer requirements for different MultiFlex boards (8RO, MultiFlex 16AI, MultiFlex ESR) and wiring conventions for MODBUS devices.

E3 and XR75 Wiring

Figure 5 - E3 and XR75 Wiring: This diagram shows the wiring connections for the E3 PIB and the XR75 unit. It details the E3 PIB with its ports and termination jumpers, and the XR75 unit with its power and communication connections. Notes cover grounding shields, Modbus network termination, COM mode jumper settings, mixed model configurations, electrical loading, and reversed RS485 COM polarity between E3 and XR75CX.

STEP 4: Setpoint Conversion Tool

For translating the E2 program, reference the E2 Setpoint Conversion Tool instruction guide:

https://climate.emerson.com/documents/026-4050-e2-setpoint-conversion-tool-for-retrofits-en-7062824.pdf

Additional Information

For Technical Support call 833-409-7505 or email ColdChain.TechnicalServices@Emerson.com.

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