IFM Interface

Introduction

Overview

The IFM Modbus-SL interface for one circuit breaker enables an intelligent modular unit (IMU) with a ComPacT, PowerPacT or MasterPacT circuit breaker, to be connected to a two-wire Modbus-SL RS-485 serial line Modbus network. Each circuit breaker has its own IFM interface and a corresponding Modbus address.

Types of IFM Interface

The part number of the IFM interface is LV434000. The IFM interface part number LV434000 completely replaces the IFM interface with part number TRV00210 or STRV00210.

NOTE:

The IFM interface data for the IFM interface with part number LV434000 is the same as for the IFM interface with part number TRV00210 or STRV00210.
The IFM interfaces with part number TRV00210 or STRV00210 are not compatible with MasterPacT MTZ circuit breakers.

IFM Interface Features

The main features of IFM interface are:

Single Modbus serial line interface provided in
- RJ45 connector interface
- Stacking connection interface
HMI rotary dials for address settings and padlock option
Push-button for test functionality

Hardware Description

General Description

A	24 Vdc power supply terminal block
B	Modbus address rotary switches
C	Modbus traffic status LED
D	Modbus locking pad
E	ULP status LED
F	Test button
G	Mechanical lock
H	QR code to product information
I	RJ45 Modbus-SL port
J	Stacking accessory connection (TRV00217, optional)
K	2 RJ45 ULP ports

For information on installation, consult the instruction sheet available on Schneider Electric website: NVE85393.

Mounting

The IFM interface is a DIN rail mounting device. The stacking accessory enables the interconnection of several IFM interfaces without additional wiring.

24 Vdc Power Supply

The IFM interface must always be supplied with 24 Vdc:

IFM interfaces stacked to an IFE server are supplied by the IFE server and it is not necessary to supply them separately.
If IFM interfaces are stacked without IFE server, only one of the IFM interfaces must be supplied with 24 Vdc.
A single IFM interface must be supplied with 24 Vdc.

It is recommended to use an UL listed/UL recognized limited voltage/limited current or a class 2 power supply with a 24 Vdc, 3 A maximum.

NOTE: For 24 Vdc power supply connection, use copper conductors only.

Modbus Address Rotary Switches

The IFM interface bears the Modbus address of the IMU to which it is connected. See the ULP System User Guide for more information regarding the IMU.

Define the Modbus address using the two address rotary switches on the front panel of the IFM interface.

The address range is 1 to 99. Do not to use the address 0, because it is reserved for broadcasting commands.

The IFM interface is initially configured with address 99.

Example of the configuration of the address rotary switches for address 21:

Modbus Traffic Status LED

The Modbus traffic status LED provides information about the traffic transmitted or received by the IMU over the Modbus network.

When the Modbus address rotary switches are on value 0, the yellow LED is steady ON.
When the Modbus address rotary switches are on value anywhere from 1 to 99, the yellow LED is ON during the transmission and reception of messages, OFF otherwise.

Modbus Locking Pad

The Modbus locking pad on the front panel of the IFM interface enables or disables remote control commands to be sent over the Modbus network to the IFM interface itself, and to the other modules of the IMU.

If the arrow points to the open padlock (factory setting), remote control commands are enabled.
If the arrow points to the closed padlock, remote control commands are disabled.

The only remote control commands that are enabled even if the arrow points to the closed padlock are the Set Absolute Time and Get Current Time commands List of IFM Interface Commands.

NOTE: For, IFM interface slaves connected to an IFE Ethernet switchboard server, the locking pad of the IFE interface does not disable the remote control commands in IFM interface.

Test Button

The test button tests the connection between all the ULP modules connected to the IFM interface.

Pressing the test button launches the connection test for 15 seconds.

During the test, all the ULP modules keep working normally.

ULP Status LED

The yellow ULP status LED describes the mode of the ULP module.

ULP status LED	Mode	Action
	Nominal	None
	Conflict	Remove extra ULP module
	Degraded	Replace IFM at the next maintenance operation
	Test	None
	Non-critical firmware discrepancy	Use EcoStruxure Power Commission software to check the firmware and hardware compatibility and follow the recommended actions.
	Non-critical hardware discrepancy
	Configuration discrepancy	Install missing features
	Critical firmware discrepancy	Use EcoStruxure Power Commission software to check the firmware and hardware compatibility and follow the recommended actions.
	Critical hardware discrepancy
	Stop	Replace IFM.
	Power off	Check power supply

Schematics With PowerPacT H-, J-, and L-Frame Circuit Breakers

General Description

Depending on the type of circuit breaker used, the user must connect the IFM interface using one of the following configurations:

Connection of the IFM interface to the MicroLogic trip unit.
Connection of the IFM interface to the BSCM module.
Connection of the IFM interface to the BSCM module or the MicroLogic trip unit.

For more information, refer to the ULP System User Guide.

ULP Connection

NOTICE
HAZARD OF EQUIPMENT DAMAGE The RJ45 ports of IFM interface are for ULP modules only. Any other use can damage the IFM interface or the device connected to the IFM interface. To check if an ULP module is compatible with the RJ45 ports of IFM interface, refer to the ULP System User Guide. Failure to follow these instructions can result in equipment damage.

All the connection configurations require the NSX cord. The insulated NSX cord is mandatory for system voltages greater than 480 Vac.

When the second ULP RJ45 connector is not used, it must be closed with an ULP line termination:

A NSX cord or RJ45 ULP cord

B ULP line termination

Connection of the IFM Interface to the MicroLogic Trip Unit

A IFM Modbus-SL interface for one circuit breaker

B NSX cord

C MicroLogic trip unit

Connection of the IFM Interface to the BSCM Module

A IFM Modbus-SL interface for one circuit breaker

B NSX cord

C BSCM breaker status control module

Connection of the IFM Interface to the BSCM Module and to the MicroLogic Trip Unit

A IFM Modbus-SL interface for one circuit breaker

B NSX cord

C BSCM breaker status control module

D MicroLogic trip unit

Connection of the IFM Interface to a Circuit Breaker for System Voltage Greater Than 480 Vac

A IFM Modbus-SL interface for one circuit breaker

B RJ45 ULP cord

C Insulated ULP module for system voltage greater than 480 Vac

D Insulated ULP cord for system voltage greater than 480 Vac

E Connector for PowerPacT H-, J-, and L-frame internal connection

Configuration

General Description

Two configurations of the IFM interface are available:

Automatic configuration (Auto-Speed sensing ON, factory setting): when connected to the Modbus network, the IFM interface automatically detects the network parameters.
Personalized configuration (Auto-Speed sensing OFF): the user can personalize the network parameters using the EcoStruxure Power Commission software.

Automatic Configuration

The Modbus slave address is defined by the two address rotary switches on the front panel of the IFM interface. When connected to the Modbus serial line network, the IFM interface automatically detects the network speed and parity. The Auto-Speed sensing algorithm tests the available Baud rates and parities and automatically detects the Modbus communication network parameters. The Modbus master must send at least 25 frames on the Modbus network in order to allow the Auto-Speed sensing algorithm to work.

The transmission format is binary with one start bit, eight data bits, one stop bit in case of even or odd parity, and two stop bits in case of no parity.

If the Auto-Speed sensing algorithm does not detect the network parameters, it is recommended to follow this procedure:

Step	Action
1	Set up the IFM interface to Modbus address 1.
2	Send a Read Multiple Register request (function code 0x03) to slave 1, at any address and for any number of registers.
3	Send this request at least 25 times.

NOTE: If the network speed or parity is changed after the IFM interface has automatically detected these settings, the IFM interface must be restarted (power off/power on) in order to detect the new network parameters.

Personalized Configuration

The Modbus slave address is defined by the two address rotary switches on the front panel of the IFM interface.

Disable the Auto-Speed sensing option and set the following Modbus communication network parameters with the EcoStruxure Power Commission software:

Baud rate: 4800, 9600, 19200, and 38400 Baud.
parity: even, odd, and none (it is possible to select one stop bit or two stop bits in case of no parity).

NOTE: It is not possible to change the Modbus address or the status of the locking pad with the EcoStruxure Power Commission software.

Communication Test

Introduction

The use of the EcoStruxure Power Commission software is recommended to test the serial line communication on the various circuit breakers.

If the laptop or PC installed with the EcoStruxure Power Commission software and connected on the Modbus network is able to read data from the IMU, the communication is established. Refer to the EcoStruxure Power Commission Online Help.