Easergy T300 HU250 Control and Communication Unit
Installation Guide
IMPORTANT NOTE
Only qualified personnel should carry out the installation, operation, servicing, and maintenance of electrical equipment. Schneider Electric accepts no liability regarding any consequences of the use of this documentation. A qualified person is a technician who is competent regarding the construction, installation, and operation of electrical equipment and is trained in safety procedures, and is therefore capable of detecting and preventing the risks involved.
Product Description
The HU250 module of the Easergy T300 range is the communication gateway dedicated to remote control applications for T300 units.
Components and Ports
| Port | Characteristics | Description |
|---|---|---|
| 1, 2 Communication ports | RS232/RS485: RJ45 connector including the following connections: RS232: TXD, RXD, CTS, DTR, DSR, RTS, DCD, GND RS485 (2-wire): D1 (B), D0 (A), GND RS422 (4-wire): RXD0 (A'), RXD1 (B'), TXD1 (B), TXD0 (A), GND (C/C') |
Customizable modem boxes including: - RS232/485: for remote link to control center (up to 115200 baud, 2kVAC isolation). - 2G/3G: for remote link to control center. - 2G/3G + GPS: for remote link with GPS time synchronization. - 3G/4G: for remote link to control center. Note: Ports 1 and 2 can include only one 2G/3G or 3G/4G modem. |
| 3 Local communication Ethernet port (EETXHT1) | 10/100 Base-T RJ45 connector | Ethernet port for link to an external device in the MV substation or for connection to a PC. Isolation: 2kVAC |
| 4 Remote communication Ethernet port (EETXHT2) | 10/100 Base-T RJ45 connector | Ethernet port for remote link to the control center, via a modem or router. Isolation: 4kVAC |
| 5 Double Ethernet ports LAN 1 and 2 (Flair 23DM) | 10/100 Base-T RJ45 connectors | Double ports for internal communication between T300 modules or for connection to a PC. Isolation: 2kVAC. 10 Ethernet jumpers (Ref: EMS59528) allow internal Ethernet connection between HU250, SC150, and LV150 modules. |
| 6 RS485 port | RJ45 connector | Port for internal Modbus communication with Easergy PS50 power supply module or other Modbus devices (up to 38400 baud, 2kVAC isolation). |
| 7 WI-FI port | Dual-band concurrent WI-FI (2.4GHz/5GHz) | Secure WI-FI port for local connection of a PC, tablet, or smartphone to the T300's embedded Web server or Easergy Builder tool. |
| 8 Expert USB port | Mini USB connector | Mini USB port for equipment maintenance (reserved for qualified personnel). Requires specific driver installation. |
| 9 Host USB port | A type USB connector | Multi-purpose USB peripheral port. |
| 10 Digital inputs | Plug-in screw connectors | 8 digital inputs: 4 unallocated, 4 dedicated (voltage presence, door open switch, external Local/Remote switch). |
| 11 Digital outputs | Plug-in screw connector | 2 dry-contact digital outputs for free use (Breaking capacity: 2000VA, Max. voltage: 60VDC, Max. current: 2A, Isolation: 2kVAC). |
| 12 Analog inputs | Plug-in leaf-spring connector | 2 analog inputs for one 3-wire PT100 temperature sensor (Measurement: -55°C to 250°C, Resolution: 1°C). |
| 13 Indicator outputs | Plug-in screw connector | 2 polarized indicator outputs for external indication (e.g., fault detection). Voltage: 5V, Max. current: 100 mA. Note: Comply with connection direction (+ and -). |
| 14 Power supply | Plug-in screw connectors | 2 power supply connectors (12-48V DC) connected internally, facilitating serial connections and power supply looping between T300 modules. |
NOTICE: HAZARD OF DAMAGE TO THE DEVICE
- Use appropriate tightening torques for connector screws.
- The HU250 module must be powered by a SELV/PELV type power supply (e.g., PS50).
- The supply voltage must not exceed 60VDC.
Failure to comply with these instructions can result in material damage.
NOTICE: HAZARD OF MATERIAL DAMAGE
- Do not expose the device to conditions exceeding specified electrical values.
- Install the device horizontally in an electrical cabinet, following local regulations.
- Connect the product to the ground (DIN rail) for EMC compliance.
- Provide standby protection according to national and international regulations.
- Install an appropriate electrical disconnecting device.
- Use only the supplied connector accessory (product reference: EMS59010).
- Verify connections match recommended cables before powering up.
- Use appropriate tools for cabling (suitable screwdriver, crimped end-pieces, etc.).
- Strip wires appropriately before connecting them.
Failure to comply with these instructions can cause material damage.
Installation
Installing the enclosure
The HU250 module is fastened to a DIN rail. No tool is needed for mounting. Clip it to fasten as shown in the diagrams.
Diagrams show the process of clipping the HU250 module onto a DIN rail and onto a PS50 enclosure.
External dimensions of the HU250 enclosure are approximately 90mm (width) x 140mm (height) x 104.5mm (depth).
Installation of a modem box
Modem boxes can be installed or interchanged easily and quickly in the HU250. To install a modem box:
- Install the modem box in the required slot (port 1 or 2).
- Press the front panel to insert the rear panel connector into the HU250.
- Tighten the front panel screw with a screwdriver to fasten the modem box.
To withdraw a modem box, reverse the procedure. Note: Changing a modem box requires configuration changes via the Easergy Builder tool. Refer to the Easergy Builder user guide.
Operation
Indicator lamps on the front panel show operating states. Buttons allow user actions. The table below summarizes indications and actions:
| Part | Description of indications and actions |
|---|---|
| 1 | HU 250 states 1.1: HU 250 operating 1.2: Equipment fault 1.3: Wi-Fi access operating (activated by Local mode) 1.4: Modules communication fault (SC150, PS50,...) |
| 2 | Local/Remote 2.1: Local position: All remote controls locked. 2.2: Remote position: All local controls on switches via SC150 module locked. 2.3: Push button to change Local/Remote state. Note: Switching to local mode activates Wi-Fi access. |
| 3 & 8 | Automatic control states and checks 3.1: Automatic control enabled 3.2: Automatic control disabled 3.3: Automatic control locked 3.4: Automatic control change-of-state button (ON/OFF). 8.1: Change-of-state enabling button. Both buttons must be pressed simultaneously. Note: Change of state is possible only in Local mode. |
| 4 | Power supply 4.1: Mains power supply operating 4.2: 48V/24V motor pack power supply operating 4.3: Transmission equipment power supply operating 4.4: Over consumption on Transmission equipment power supply 4.5: Battery fault. Note: These states are retransmitted by the PS50 module. Indicators can be customized via Easergy Builder. |
| 5 | Customizable indicator lamps 5.1, 5.2, 5.3: 3 unassigned indicator lamps configurable for customized states. Refer to the Quick start manual. |
| 6 | 2G/3G or 3G/4G modem box indicator lamps 6.1: Mobile network activity indicator. 6.2: Modem fault indicator (SIM card fault, connection problem). 6.3: GPS signal reception status indicator. |
| 7 | RS232-RS485 modem box indicator 7.1: TX: RS232/RS485 data transmission indicator. 7.2: RX: RS232/RS485 data reception indicator. |
| 9 | Reset 9.1: Reset button reinitializes fault indications and automatic control locking. |
| 10 | Indicator test 10.1: Indicator test button forces lighting of all indicator lamps. Helps detect anomalies. |
Note: Refer to the table for the meaning of flashing states and indicator lamp colors. Some indicators are customizable.
2G/3G or 3G/4G Modem
This modem allows insertion of a SIM card into one of two slots. GPS and GSM antenna connectors and SIM cards are accessible on the front. Mount the GPS antenna to the substation wall (preferably outside) and connect its cable to the 'GPS' connector. Insert SIM card(s) with the HU250 switched off. The GSM antenna is internal and requires no outside mounting.
DANGER: HAZARD OF BURNING, ELECTRIC SHOCK, EXPLOSION OR ELECTRIC ARC
- Wear appropriate Personal Protective Equipment (PPE) and follow safety procedures and local installation standards.
- Switch off power to the HU250 and connected devices before handling or replacement.
- Use a power-off check to ensure the device is properly switched off.
Failure to comply with these indications will result in death or serious injury.
Power Supply
The HU250 has two internal power supply connectors that facilitate serial connections and power supply looping between modules. No strapping is necessary. This architecture ensures continuity of power supply. Connect the HU250 as shown in the diagram for power supply loopback benefits.
Diagram shows power supply connections between HU250, SC150, and PS50 modules.
Parameters Setup
Installation of the HU250 module does not require parameter setup. This is performed during commissioning/configuration stages. Refer to the User Manual and Expert Guide for details.
Identification
The serial number format is: Year - Week - Work order (e.g., 15340265).
Grounding
The DIN rail must be grounded and metallic. If installed on a PS50 module, grounding is performed on the PS50's power supply input, not the DIN rail. Refer to the PS50 Installation Guide.
Indicator Lamp States
The table below details the meaning of indicator states (flashing, steady) for various colors (Red, Green, Orange) and their corresponding states (Boot, Fault, OK, etc.).
| Indicator state | Flashing Red | Steady Green | Steady Red | Steady Green | Steady Orange | Unit |
|---|---|---|---|---|---|---|
| 1.1 | Boot | - | Fault | OK | Com fault | - |
| 1.2 | - | - | Major Fault | - | Minor fault | - |
| 1.3 | - | - | - | OK | - | - |
| 1.4 | - | - | Fault | OK | In progress | - |
| 2.1 | - | - | - | Local | - | Local |
| 2.2 | - | - | - | Remote | - | Remote |
| 2.3 | - | - | - | - | - | - |
| 3.1 | - | - | - | ON | - | ON |
| 3.2 | - | - | - | OFF | - | OFF |
| 3.3 | - | - | - | Locked | - | Locked |
| 3.4 | - | - | - | - | - | - |
| 4.1 | - | - | AC OFF | AC ON | - | - |
| 4.2 | - | - | Fault | OK | - | - |
| 4.3 | - | - | Fault | OK | - | - |
| 4.4 | - | - | - | - | - | - |
| 4.5 | - | - | Fault | OK | - | - |
| 5.1 | - | - | - | ON | - | ON |
| 5.2 | - | - | - | ON | - | ON |
| 5.3 | - | - | - | ON | - | ON |
| 6.1 | - | Active | - | - | - | - |
| 6.2 | - | - | Fault | - | - | - |
| 6.3 | - | Active and sync | - | No sync | - | - |
| 7.1 TX | - | Transmitting | - | - | - | - |
| 7.2 RX | - | Receiving | - | - | - | - |
(1) Indicators customizable by configuration. Only default values shown. Note: Indications in bold letters correspond to normal operation.
FCC Information
Easergy HU250 FCC ID: 2AHHK-EASERGYHU250. Easergy GSM/3G modem box FCC ID: QIPPHS8-P. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. This equipment complies with FCC Class B digital device limits for reasonable protection against harmful interference. It generates, uses, and can radiate radio frequency energy. If interference occurs, try reorienting the antenna, increasing separation, connecting to a different outlet, or consulting a technician. This device complies with FCC RF radiation exposure limits and must be installed at least 20cm from all persons, not co-located or operating with any other antenna or transmitter.
