9 Replace and Repair

This section outlines the handling and installation of spare parts to the eSite Modular system, either to expand the system functionality or to replace faulty equipment.

9.1 Ambient Air Temperature Sensor

The ambient air temperature sensor consists of a thermistor on a cable, standard length 5 m. Place the sensor hanging outside of the battery cabinet, probing the ambient air temperature.

Part	Comment	Connection point
Ambient air temp sensor cable 1	Not polarity dependent	C7:7
Ambient air temp sensor cable 2	Not polarity dependent	C7:8

9.2 Battery Temperature Sensor

The battery temperature sensor consists of a thermistor on a cable, standard length 5 m. Place the sensor in the battery cabinet in the centre of the battery bank.

Part	Comment	Connection point
Battery temp sensor cable 1	Not polarity dependent	C7:9
Battery temp sensor cable 2	Not polarity dependent	C7:10

9.3 Battery Voltage Sensor

The battery voltage sensor probes connect directly to the battery terminals. They are polarity sensitive, but are protected for reversed polarity. On the negative probe, there is a tubular fuse (slow acting, 1 A, 48 V). The probes are connected to the Batt1 connection ports on the rear side of the RMC.

Part	Comment	Connection point
Battery volt 0 V	Battery + terminal	C9:6
Battery volt -48V	Battery - terminal	C10:6

9.4 CAN Communication and Current Sensors

For tenant current measurements, eSite Modular uses complementary LEM current sensors (see figure 9.1). LEM current sensors utilize the CAN protocol for communication with the eSite Modular system. The CAN cable kit provided by eSite Power Systems is specifically prepared for use with LEM sensors. The white contacts can be used to connect several current sensors in series. The connection order does not matter.

Note

Each sensor has a fixed, predetermined CAN ID which is printed on the sensor and should be clearly visible. Make sure to do the correct system configurations for each installed sensor in the eSite Web pages. The CAN ID must be unique for each sensor in the system.

The following CAN IDs are presently configurable:

• 001 (3C1)

• 002 (3C2)

• 003 (3C3)

• 004 (3C4)

• 005 (3C5)

• 006 (3C6)

• 007 (3C7)

• 008 (3C8)

• 009 (3C9)

• 000 (3C0)

Figure 9.1. LEM current sensor with CAN ID highlighted.

For more information about 12 V, 24 V and GND see section Connection point 24 V, GND and 12 V.

Part	Comment	Connection point
CAN cable	Orange – White	C7:5 CAN–H
CAN cable	Orange	C7:6 CAN–L
CAN cable	Brown	GND
CAN cable	Brown – White	12 V

9.5 Fuel Sensors

A fuel sensor must be supplied with 24 V and has a 0‒10 V output. A fuel sensor can be connected to any of the Analogue In 1-4 ports. This is configurable on the Settings page on eSite Web. The default system settings are Analogue In 1 for Fuel sensor 1 and Analogue In 2 for Fuel sensor 2 as shown below. The colour coding below is valid for fuel sensors supplied by eSite Power Systems.

9.5.1 Fuel sensor 1

Part	Comment	Connection point A	Connection point B
Fuel Sensor cable	Red, 24 V	+24 V
Fuel Sensor cable	Green, GND	GND
Fuel Sensor cable	Yellow, signal	C8:2
Jumper cable		C8:1	GND 24 V

9.5.2 Fuel sensor 2

Part	Comment	Connection point A	Connection point B
Fuel Sensor cable	Red, 24 V	+24 V
Fuel Sensor cable	Green, GND	GND
Fuel Sensor cable	Yellow, signal	C8:4
Jumper cable		C8:3	GND 24 V

9.6 Replacement of Converter Unit

9.6.1 When to Replace a Converter Unit

Replacing a Converter Unit is generally the last course of action when a serious permanent unit failure has been determined that cannot be amended during operation. Replace a Converter Unit only after consulting eSite Power Systems. All prior corrective actions must be tried and failed.

Fill in a replacement report for the faulty Converter Unit before it is replaced. Send the report to eSite Power Systems. A Return Material Authorization (RMA) number is provided from eSite Power Systems. In the case of a warranty claim, the RMA number must be clearly labelled on the returning box to eSite Power Systems for the warranty to be processed.

9.6.2 Replacing a Converter Unit

Warning

The Converter Unit must not be lifted by one person alone.

Before you lift the Converter Unit you must:

• know the weight of the Converter Unit (RSE: 62 kg, RE: 58 kg, SE: 45 kg).

• make sure the installation area is clear of obstruction.

• make sure there are no wet or slippery surfaces in the installation area.

To lift the Converter Unit properly (see figure 9.2), do as follows:

1. Stand as close to the box as possible.

2. Make sure you are steady on your feet and keep a good balance.

3. Keep your back straight and use your legs and hips to lower yourself down to the box.

4. Get a firm hold of the Converter Unit with your hands.

5. Lift slowly by extending your legs with your back straight.

Figure 9.2. How to lift the Converter Unit.

Warning

During operation, the Converter Unit may become very hot. Ensure that the Converter Unit has cooled down sufficiently before undocking it. There is a burn hazard.

Note

Fill in the replacement report before disconnecting and packing the used Converter Unit.

For more information on how to perform a complete site installation, please refer to the eSite Modular Installation and Site Commissioning Manual.

With the eSite Modular system shut down, go through the following steps to replace a Converter Unit.

1. Disengage all Converter Unit breakers, AC power source breakers, Battery breakers and Solar breakers .

2. Remove the bottom metal cover plate of the used Converter Unit by loosening the 3 M5x10mm Torx screws.

3. Detach the Converter Unit from the mounting frame by loosening the 2 M8x12Hex screws.

4. Disconnect the CAN communication cable from the Converter Unit.

5. Disconnect the AC power cables, the Solar power cables and the battery power cables from the Converter Unit.

6. Lift up the Converter Unit. Let it slide up and out of the slots.

7. Keep the used Converter Unit on a clean and dry surface while the new Converter Unit is being installed.

8. Unpack the new Converter Unit. Lift up the Converter Unit and put it on a flat surface.

9. Remove the bottom metal cover plate of the new Converter Unit by loosening the 3 M5x10mm Torx screws.

10. Lift up and dock the new Converter Unit. Make sure that the guides on the right and left side of the unit go into the slots on the mounting frame.

11. Lower the Converter Unit and let it slide down the slots entirely.

12. Put the used Converter Unit in the transportation box for the new Converter. One styrofoam is for the top of the Converter Unit and one styrofoam is for the bottom. Make sure that they are fitted correctly when lowering the used Converter Unit into the package. Pack the Converter Unit properly to prevent any damage.

13. Close the box lid and mark the box with the serial number and the Return Material Authorization (RMA) number.

14. Attach the new Converter Unit to the mounting frame by tightening the 2 M8x12Hex screws.

15. Connect the AC power cables, the Solar power cables and the battery power cables to the new Converter Unit.

16. Connect the CAN communication cable from the RMC to the new Converter Unit.

17. Mount the bottom metal cover plate of the new Converter Unit by tightening the 3 M5x10mm Torx screws.

18. Engage Converter Unit and Battery breakers. Engage AC Power breakers. Start up the system and perform a Site Commissioning and Registration of the new Converter Unit.

9.7 Installation of SIM Card

Caution

Be careful when installing the SIM card.

Note

Before installing the SIM card, please make sure that the SIM card is working and that it has sufficient data available. The SIM card must not have a PIN code.

The installation of a SIM card into the designated slot on the side of the RMC unit (see figure 9.3) is a quick and straightforward procedure. To install a SIM card, do the following:

1. If the RMC is mounted to the cabinet rack, unscrew the 4 Hex inserts and pull out the RMC slightly to access the SIM card slot on the right-hand side.

2. If an old SIM card is inserted and is to be replaced, eject it by gently pressing it inwards and then remove it.

3. Install the new SIM card by gently inserting it into the SIM card slot until it clicks.

4. Reattach the RMC to the rack with the 4 Hex inserts.

Figure 9.3. Installation of a SIM card.