Siemens SICAM User Manual

Preface

Open Source Software

Table of Contents

SICAM
Feeder Condition Monitor

V03.30

Manual

Delivery

Introduction

Hardware Components and Drawings

Device Functions

Technical Data

Type Testing

Connection Diagrams

Parameterization

Modbus Registers

1
2
3
4
5
6
7

A

B

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Glossary

Index

i

i

NOTE

For your own safety, observe the warnings and safety instructions contained in this document, if available.

Disclaimer of Liability

This document has been subjected to rigorous technical
review before being published. It is revised at regular inter­vals, and any modifications and amendments are included
in the subsequent issues. The content of this document has
been compiled for information purposes only. Although
Siemens AG has made best efforts to keep the document as
precise and up-to-date as possible, Siemens AG shall not
assume any liability for defects and damage which result
through use of the information contained herein.

This content does not form part of a contract or of business
relations; nor does it change these. All obligations of
Siemens AG are stated in the relevant contractual agree­ments.

Siemens AG reserves the right to revise this document from
time to time.

Document version: E50417-H8940-C580-A4.01
Edition: 03.2019
Version of the product described: V03.30

Copyright

Copyright © Siemens AG 2019. All rights reserved.
The disclosure, duplication, distribution and editing of this

document, or utilization and communication of the content
are not permitted, unless authorized in writing. All rights,
including rights created by patent grant or registration of a
utility model or a design, are reserved.

Trademarks

SIPROTEC™, DIGSI™, SIGRA™, SIGUARD™, SAFIR™, and
SICAM™ are trademarks of Siemens AG. Any unauthorized
use is illegal. All other designations in this document can
be trademarks whose use by third parties for their own
purposes can infringe the rights of the owner.

Preface

Purpose of the Manual

This manual describes the application, functions, installation, and operation of the SICAM Feeder Condition
Monitor (FCM) 6MD232xx.

Target Audience

Protection system engineers, commissioning engineers, persons entrusted with the setting, testing and main­tenance of automation, selective protection and control equipment, and operational crew in electrical installa­tions and power plants.

Scope

This manual applies to SICAM Feeder Condition Monitor (FCM) 6MD232xx; firmware version V03.30.

Indication of Conformity

This product complies with the directive of the Council of the European Communities
on the harmonization of the laws of the Member States relating to electromagnetic
compatibility (EMC Directive 2014/30/EU) and concerning electrical equipment for use
within specified voltage limits (Low Voltage Directive 2014/35/EU) as well as restriction
on usage of hazardous substances in electrical and electronic equipment (RoHS Direc­tive 2011/65/EU).

This conformity has been proved by tests performed according to the Council Directive
and in accordance with the generic standard IEC/EN 61326-1 (for EMC directive) and
with the standards IEC/EN 61010-1 and IEC/EN 61010-2-30 (for Low Voltage Directive)
by Siemens AG.

The device is designed and manufactured for application in an industrial environment.
RoHS directive 2011/65/EU is met using the standard EN 50581.
The product conforms with the international standards of IEC 61326-1.

Standards

IEEE Std C 37.90 and EN 55011
IEC/EN 62271-1: 2007-10
IEC/EN 61243-5: 1997-06

Support

Our Customer Support Center provides a 24-hour service.

Siemens AG
Customer Support Center
Humboldtstraße 59
90459 Nürnberg
Germany

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Preface

Phone: [phone]
Fax: [phone]
E-mail: [e-mail]

Additional Support

For questions about the system, please contact your Siemens sales partner.

Training Courses

Inquiries regarding individual training courses should be addressed to our Training Center:

Siemens AG
Siemens Power Academy TD
Humboldtstraße 59
90459 Nürnberg
Germany

Phone: [phone]
Fax: [phone]
E-mail: [e-mail]
Internet: www.siemens.com/poweracademy

Notes on Safety

This document is not a complete index of all safety measures required for operation of the equipment (module
or device). However, it comprises important information that must be followed for personal safety, as well as
to avoid material damage. Information is highlighted and illustrated as follows according to the degree of
danger:

DANGER

DANGER means that death or severe injury will result if the measures specified are not taken.

²

WARNING

WARNING means that death or severe injury may result if the measures specified are not taken.

²

CAUTION

Comply with all instructions, in order to avoid death or severe injuries.

Comply with all instructions, in order to avoid death or severe injuries.

CAUTION means that medium-severe or slight injuries can occur if the specified measures are not taken.

Comply with all instructions, in order to avoid moderate or minor injuries.

²

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NOTICE

i

i

NOTICE means that property damage can result if the measures specified are not taken.

Comply with all instructions, in order to avoid property damage.

²

NOTE

Important information about the product, product handling or a certain section of the documentation
which must be given particular attention.

Qualified Electrical Engineering Personnel

Only qualified electrical engineering personnel may commission and operate the equipment (module, device)
described in this document. Qualified electrical engineering personnel in the sense of this manual are people
who can demonstrate technical qualifications as electrical technicians. These persons may commission,
isolate, ground and label devices, systems and circuits according to the standards of safety engineering.

Proper Use

The equipment (device, module) may be used only for such applications as set out in the catalogs and the
technical description, and only in combination with third-party equipment recommended and approved by
Siemens.

Problem-free and safe operation of the product depends on the following:

Preface

Proper transport

•

Proper storage, setup and installation

•

Proper operation and maintenance

•

When electrical equipment is operated, hazardous voltages are inevitably present in certain parts. If proper
action is not taken, death, severe injury or property damage can result:

The equipment must be grounded at the grounding terminal before any connections are made.

•

All circuit components connected to the power supply may be subject to dangerous voltage.

•

Hazardous voltages may be present in equipment even after the supply voltage has been disconnected

•

(capacitors can still be charged).

Operation of equipment with exposed current-transformer circuits is prohibited. Before disconnecting the

•

equipment, ensure that the current-transformer circuits are short-circuited.

The limiting values stated in the document must not be exceeded. This must also be considered during

•

testing and commissioning.

Used Symbols on Device

Symbol Description

No.

1 Direct current, IEC 60417-5031

2 Alternating current, IEC 60417-5032

3 Direct and alternating current, IEC 60417-5033

4 Earth (ground) terminal, IEC 60417-5017

5 Protective conductor terminal, IEC 60417-5019

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Preface

No. Symbol Description

6 Caution, risk of electric shock

7 Caution, risk of danger, ISO 7000-0434

8 Protective Insulation, IEC 60417-5172, Safety Class II devices

9 Guideline 2002/96/EC for electrical and electronic devices

10 Guideline for the Eurasian Market

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Open Source Software

The product contains, among other things, Open Source Software developed by third parties. The Open
Source Software used in the product and the license agreements concerning this software can be found in the
Readme_OSS. These Open Source Software files are protected by copyright. Your compliance with those
license conditions will entitle you to use the Open Source Software as foreseen in the relevant license. In the
event of conflicts between Siemens license conditions and the Open Source Software license conditions, the
Open Source Software conditions shall prevail with respect to the Open Source Software portions of the soft­ware. The Open Source Software is licensed royalty-free. Insofar as the applicable Open Source Software
License Conditions provide for it you can order the source code of the Open Source Software from your
Siemens sales contact - against payment of the shipping and handling charges - for a period of at least 3 years
since purchase of the Product. We are liable for the Product including the Open Source Software contained in
it pursuant to the license conditions applicable to the Product. Any liability for the Open Source Software
beyond the program flow intended for the Product is explicitly excluded. Furthermore any liability for defects
resulting from modifications to the Open Source Software by you or third parties is excluded. We do not
provide any technical support for the Product if it has been modified.

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Table of Contents

Preface..........................................................................................................................................................3

Open Source Software..................................................................................................................................7

1 Delivery.......................................................................................................................................................11

1.1 Delivery............................................................................................................................ 12

2 Introduction................................................................................................................................................13

2.1 Overview ......................................................................................................................... 14

2.2 Environmental Protection Hints......................................................................................... 20

3 Hardware Components and Drawings........................................................................................................21

3.1 Hardware Components..................................................................................................... 22

3.2 Terminal Diagram............................................................................................................. 23

3.3 Dimensional Drawings ......................................................................................................25

4 Device Functions........................................................................................................................................ 29

4.1 Description....................................................................................................................... 30

4.1.1 Measurements and Derived Values.............................................................................. 30

4.1.2 Fault Detection............................................................................................................30

4.1.3 Fault-Reset Mechanism................................................................................................32

4.1.4 Enhanced Fault Validation and Fault-Reset Function.....................................................33

4.1.5 Trip Time DMT and IDMT .............................................................................................36

4.1.6 Ground-Fault Parameter Active Group Setting.............................................................. 37

4.1.7 Fault Indication........................................................................................................... 37

4.1.8 DO Configuration........................................................................................................ 38

4.1.9 Operating Modes.........................................................................................................38

4.1.10 Correction Factors for LoPo VT and LoPo CT (IEC 61869-10, IEC 61869-11)................... 38

4.1.11 Power-Flow Direction Reversal .................................................................................... 39

4.1.12 P,Q Sign...................................................................................................................... 39

4.1.13 3-Phase Angle Calculations.......................................................................................... 40

4.1.14 Phase-Sequence Monitoring........................................................................................ 40

4.1.15 Determination of Fault Direction..................................................................................41

4.1.16 Direction Determination of Phase Elements..................................................................42

4.1.17 Directional Ground Fault (Compensated/Resonant-Grounded) ..................................... 43

4.1.18 Directional Ground Fault (in Isolated Electrical Power Systems).................................... 43

4.1.19 Ground-Fault Direction for Solidly Grounded System.................................................... 44

4.1.20 Ground-Fault Detection with Cos φ/Sin φ Measurement............................................... 45

4.1.21 Determination of a Ground Fault with the Pulse-Location Detection Mechanism........... 46

4.1.22 Determination of the Ground-Fault Phase.................................................................... 49

4.1.23 Determination of Repeated Phase Faults with Automatic Reclosing ..............................49

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Table of Contents

4.1.24 Intermittent Ground Fault............................................................................................49

4.1.25 Inrush-Current Detection/Blocking ...............................................................................50

4.1.26 Primary Current Settings..............................................................................................51

4.1.27 Ground-Current Calculation......................................................................................... 51

4.1.28 Network Voltage Ratio................................................................................................. 52

4.1.29 Voltage Measurements with Sensors as per IEC 60044-7, IEC 61869-11 and with

Conventional Voltage Sensors......................................................................................52

4.1.30 Low-Voltage Measurement.......................................................................................... 53

4.1.31 Determination of Medium Voltage via Low-Voltage Measurements.............................. 53

4.1.32 Voltage Measurement via Integrated Voltage-Detecting Systems..................................54

4.1.33 Energy Measurement...................................................................................................55

4.1.34 RTC Synchronization....................................................................................................55

4.1.35 Remote Firmware Updates...........................................................................................56

4.1.36 Password Menu Access................................................................................................ 56

4.1.37 Device Alerts............................................................................................................... 57

4.1.38 Archive Logging.......................................................................................................... 58

4.1.39 Battery Freshness Mode...............................................................................................59

5 Technical Data............................................................................................................................................ 61

5.1 Device Technical Data....................................................................................................... 62

6 Type Testing............................................................................................................................................... 65

6.1 Type Testing..................................................................................................................... 66

7 Connection Diagrams................................................................................................................................. 69

7.1 Connection Diagrams........................................................................................................70

7.2 Installing the Device..........................................................................................................73

7.3 Sensor Connections.......................................................................................................... 74

7.4 Modbus Connection of SICAM FCM with RTU..................................................................... 78

A Parameterization........................................................................................................................................ 81

A.1 Parameterization...............................................................................................................82

A.2 Parameterizing the User Interface......................................................................................83

A.3 Editing the Device Settings................................................................................................91

B Modbus Registers....................................................................................................................................... 93

B.1 Modbus Registers..............................................................................................................94

B.2 Implementation of the Modbus Protocol ...........................................................................95

B.3 Bit-Type Data.................................................................................................................. 107

B.4 Register-Type Data – Holding Registers............................................................................110

B.5 Register-Type Data – Input Registers................................................................................131

B.6 Register-Type Data – Analog Input Registers.................................................................... 144

B.7 Register-Type Data - Events............................................................................................. 150

B.8 Register-Type Data – Trailing Pointers..............................................................................153

B.9 Self-Test Mode................................................................................................................ 156

Glossary.................................................................................................................................................... 171

Index.........................................................................................................................................................173

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Delivery

1.1 Delivery 12

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Delivery

1.1 Delivery

1.1

Delivery Note

Contents of Delivery

Delivery

The SICAM FCM device is delivered in a cardboard box containing the Siemens logo.

1 SICAM FCM device

•

1 document with safety instructions

•

1 ground wire

•

WARNING

Danger of explosion of the battery.

Noncompliance with the safety instructions means that death, severe injuries, or considerable mate­rial damages can occur.

Do not throw the SICAM FCM device containing a battery into a fire.

²

NOTE

SICAM FCM with 1 contained lithium metal cell (0.6 g lithium content) meets the preconditions of Special
Provision 188 of the UN Recommendations on the Transport of Dangerous Goods, 17th revised edition and
is classified according to:

ADR/RID/ADN/IMDG-Code: UN 3091 lithium metal batteries contained in equipment, 9, preconditions

•

of SP 188

ICAO-TI/IATA-DGR: UN 3091 lithium metal batteries contained in equipment, 9, preconditions of

•

Section II PI 970

NOTE

Do not transport the SICAM FCM in battery-activated mode. Before transportation, ensure that the SICAM
FCM is in Battery Freshness Mode (BFM).

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2

Introduction

2.1 Overview 14

2.2 Environmental Protection Hints 20

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Introduction

2.1 Overview

2.1

Overview

SICAM Feeder Condition Monitor (FCM) is an Intelligent Electronic Device (IED) used for detecting and indi­cating short circuits or ground faults with and without directional information. SICAM FCM accurately moni­tors, measures, and displays operational measured values and performs the condition monitoring task in a
medium-voltage distribution system. SICAM FCM is typically used in the medium-voltage and low-voltage
secondary substation that ranges from 0.4 kV to 36 kV.

SICAM FCM measures the RMS value for alternating voltage, alternating current, and power frequency.
SICAM FCM calculates the active power (P), reactive power (Q), apparent power (S), power factor (cos φ),
phase angle, energy, and other relevant values.

SICAM FCM consists of the following hardware interfaces:

3 current inputs

•

3 voltage inputs

•

1 digital input

•

2 digital outputs

•

1 RS 485 interface (Modbus RTU)

•

1 auxiliary power supply

•

[dw_fcm_block_diagram2321, 3, en_US]

Figure 2-1 SICAM FCM Block Diagram for MLFB 6MD2321-1AA00-1AA0

14 SICAM, Feeder Condition Monitor, Manual

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[dw_fcm_block_diagram2322, 2, en_US]

Figure 2-2 SICAM FCM Block Diagram for MLFB 6MD2322-1AA00-1AA0

Introduction

2.1 Overview

Applications

SICAM FCM is used:

As a directional and non-directional short circuit and ground-fault detector suitable for solid, isolated, and

•

compensated networks in medium-voltage and low-voltage distribution systems

As a simple power quality meter and energy measurements in various applications

•

Flush Mounting

SICAM FCM can be flush-mounted in the panel and operated inside an enclosed dry room. To mount
SICAM FCM in the panel, proceed as follows:

Cut a rectangle in the Ring-Main Unit (RMU) panel measuring 92.0 mm + 0.8 mm × 45.0 + 0.8 mm (W ×

•

H).

Carry out all the required internal wiring connections.

•

For more information about terminal diagrams, refer to 3.2 Terminal Diagram.

Flush SICAM FCM into the panel and lock it with the clamps.

•

For more information about installation, refer to 7.2 Installing the Device.

•

Device Ordering Information

Use the following ordering information to order SICAM FCM and other related accessories.

SICAM, Feeder Condition Monitor, Manual 15
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Introduction

2.1 Overview

Table 2-1 SICAM FCM and Accessories Ordering Information

Description Order Number

SICAM FCM

Voltage measurements: LoPo VTs according to IEC 60044-7, IEC 61869-11,

•

conventional VT and 230 V
Current measurements: LoPo CTs according to IEC 60044-8, IEC 61869-10

•

Fault indicator with directional information and measurements of V, I, f, P,

•

Q, S, cos φ, and power-flow direction
Panel mounted

•

Dimensions in mm: 96 × 48 × 109.5

•

1 digital input

•

2 digital outputs

•

Modbus RTU

•

SICAM FCM

For voltage measurement with LRM voltage-detecting systems according

•

to IEC 61243-5
Current measurements: LoPo CTs according to IEC 60044-8, IEC 61869-10

•

Fault indicator with directional information and measurements of V, I, f, P,

•

Q, S, cos φ, and power-flow direction
Panel mounted unit with display

•

Dimensions in mm: 96 × 48 × 109.5

•

1 digital input

•

2 digital outputs

•

Modbus RTU

•

The mandatory interface cable (6MD2322-0AA80-0AB3) for linkage to the

•

Voltage-Detection System (VDS) has to be ordered separately.

Voltage-Detection System (VDS) Interface Cable

4-wire connection lead with integrated protection circuit to connect

•

SICAM FCM 6MD2322-1AA00-1AA0/CC with the LRM voltage detection
system

1 ground input

•

Length: 0.3 m

•

Mandatory accessory for each SICAM FCM 6MD2322-1AA00-1AA0 with

•

hardware revision number “CC” or higher

Adapter 1 A to low power IEC 60044-8

3 inputs, transformer ratio 225 mV@1 A

•

Accuracy class: 1

•

Thermal overload: 100 A for 1 s

•

Coil diameter: 5.8 mm

•

Adapter 5 A to low power IEC 60044-8

3 inputs, transformer ratio 225 mV@5 A

•

Accuracy class: 3

•

Thermal overload: 100 A for 1 s

•

Coil diameter: 5.8 mm

•

6MD2321-1AA00-1AA0/XX

6MD2322-1AA00-1AA0/XX

6MD2322-0AA80-0AB3

6MD2320-0AA10-1AA0

6MD2320-0AA20-1AA0

1

1

1

XX represents the hardware revision number

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Description Order Number

Phase current sensor – split core

Ratio: 225 mV@300 A, IEC 61869-10

•

Accuracy class: 0.5/1 extension 200 %, 5P10

•

Connection cable: 2.0 m, open end

•

Internal diameter: 65 mm

•

Phase current sensor – closed ring core

Ratio: 225 mV@700 A, IEC 60044-8

•

Accuracy class: 0.5, 5P10

•

Connection cable: 3.5 m, open end

•

Internal diameter: 82 mm

•

GOST certificate

•

Core balance current sensor – split core

Ratio: 225 mV@60 A, IEC 61869-10

•

Accuracy class: 1/3

•

Connection cable: 2.0 m

•

Window diameter: 160 mm

•

Core balance current sensor – split core

Ratio: 225 mV@60 A, IEC 60044-8

•

Accuracy class: 1

•

Connection cable: 3.5 m

•

Window diameter: 120 mm

•

GOST certificate

•

Voltage Sensor 10 kV

10 kV/√3 : 3.25/√3

•

Accuracy class: 1

•

IEC 60044-7 for symmetrical T connectors with C cone for cables: Nexans

•

(K) 440TB/ Cellpack CTS-S/Südkabel SEHDT13 and SEHDT23
Voltage factor: 1.2 V

•

Voltage factor: 1.9 VN for maximum of 8 hours

•

Voltage Sensor 10 kV

10 kV/√3 : 3.25/√3

•

Accuracy class: 1

•

IEC 60044-7 for asymmetric T connectors of nkt cables type CB-24, CC-24

•

and Raychem RSTI-58xx/RSTI-CC-58xx
Voltage factor: 1.2 V

•

Voltage factor: 1.9 VN for maximum of 8 hours

•

Voltage Sensor 10 kV

10 kV/√3 : 3.25/√3

•

Accuracy class: 0.5

•

IEC 60044-7 for asymmetric T connectors of nkt cables type CB-24

•

Voltage factor: 1.2 V

•

Voltage factor: 1.9 VN for maximum of 8 hours, GOST certificate

•

N

N

N

Introduction

2.1 Overview

6MD2320-0GA00-1AA0

6MD2320-0JA00-0BA1

6MD2320-0AF00-1AA0

6MD2320-0AF00-1AA1

6MD2320-0AA04-1AA0

6MD2320-0AA04-1AB0

6MD2320-0AA04-0AB1

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Introduction

2.1 Overview

Description Order Number

Voltage Sensor 20 kV

20 kV/√3 : 3.25/√3

•

Accuracy class: 0.5/1

•

IEC 61869-11 for symmetric T connectors with C cone for cables: Nexans

•

(K) 440TB/ Cellpack CTS-S/Südkabel SEHDT13 and SEHDT23
Voltage factor: 1.2 V

•

Voltage factor: 1.9 VN for maximum of 8 hours

•

Voltage Sensor 20 kV

20 kV/√3 : 3.25/√3

•

Accuracy class: 1

•

IEC 61869-11 for asymmetric T connectors of nkt cables type CB-24, CC-24

•

and Raychem RSTI-58xx/RSTI-CC-58xx
Voltage factor: 1.2 V

•

Voltage factor: 1.9 VN for maximum of 8 hours

•

Typical Ordering Combinations MLFB Number Use Case

SICAM FCM For resistive voltage

dividers, conventional VTs,
and 230 V.

Fault indicator with direc­tional information and
measurements of V, I, f, P,
Q, S, cos φ, power-flow
direction, 2 digital outputs

SICAM FCM For voltage detecting

systems
Fault indicator with direc-

tional information and
measurements of V, I, f, P,
Q, S, cos φ, and power­flow direction, 2 digital
outputs

1 A adaptor 3 inputs @225mV low-

power signal

5 A adaptor 3 inputs @225mV low-

power signal

Phase-current
sensor

Depending on require­ments

N

N

LoPo
sensors
available

6MD2321-1AA00

-1AA0/XX

6MD2322-1AA00

-1AA0/XX

6MD2320-0AA10

-1AA0
6MD2320-0AA20

-1AA0
Refer to Table 2-1 – 3 x 2 x – –

1

1

1 x 1 x 1 x 1 x –

1 x 1 x 1 x 1 x

– – – 1 x –

– – – 1 x –

Neutral­point
treat­ment:
Solid/low­resistant

6MD2320-0AA07-1AA0

6MD2320-0AA07-1AB0

Neutral­point
treat­ment:
Isolated/
compen­sated

Conven­tional

1 A/ 5 A
CTs avail­able

Connect­ing cable

2

1 x

2

In order to set up SICAM FCM (MLFB: 6MD2322-1AA00-1AA0/CC and above) with voltage-detection system, an appropriate
connecting cable (MLFB: 6MD2322-0AA80-0AB3) must be used.

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Typical Ordering Combinations MLFB Number Use Case

i

i

i

i

LoPo
sensors
available

Core balance
current sensor

Voltage
sensor

Depending on require­ments

For example, GOST certifi­cate

Depending on voltage
level and form factor

NOTE

The device with MLFB number 6MD2321-1AA00-1AA0/DD and above must be loaded with firmware
V03.XX only.

The device with MLFB number 6MD2321-1AA00-1AA0/CC must be loaded with firmware V02.XX only.

Refer to Table 2-1 – –

Refer to Table 2-1 –

Neutral­point
treat­ment:
Solid/low­resistant

4

(3 x)

Neutral­point
treat­ment:
Isolated/
compen­sated

3

1 x

4

(3 x)

2.1 Overview

Conven­tional

1 A/ 5 A
CTs avail­able

– –

– –

Introduction

Connect­ing cable

Accessories

NOTE

The device with MLFB number 6MD2322-1AA00-1AA0/CC and above must be loaded with firmware V03.XX
only.

The device with MLFB number 6MD2322-1AA00-1AA0/BB must be loaded with firmware V02.XX only.

You can download the current version of the SICAM FCM manual from Siemens Powerquality.

3

The ground current can also be calculated in isolated/compensated electrical power systems. Consider information regarding accu­racy.

4

Optional for measuring purpose or for directional information

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Introduction

2.2 Environmental Protection Hints

2.2

Disposal of Old Equipment and Batteries (Applicable only for European Union and Countries with a Recycling
System)

Disposal of Mobile Storage Devices (e.g. USB Sticks and Memory Cards)

Environmental Protection Hints

The disposal of our products and possible recycling of their components after decommissioning has to be
carried out by an accredited recycling company, or the products/components must be taken to applicable
collection points. Such disposal activities must comply with all local laws, guidelines and environmental speci­fications of the country in which the disposal is done. For the European Union the sustainable disposal of elec­tronic scrap is defined in the respective regulation for "waste electrical and electronic equipment" (WEEE).

The crossed-out wheelie bin on the products, packaging and/or accompanying documents means
that used electrical and electronic products and batteries must not be mixed with normal house­hold waste.

According to national legislation, penalties may be charged for incorrect disposal of such
waste.

By disposing of these products correctly you will help to save valuable resources and prevent any potential
negative effects on human health and the environment.

NOTE

Our products and batteries must not be disposed of as household waste. For disposing batteries it is neces­sary to observe the local national/international directives.

When disposing of/transferring mobile storage devices, using the format or delete functions only changes the
file management information and does not completely delete the data from your mobile storage device. When
disposing of or transferring a mobile storage device, Siemens strongly recommends physically destroying it or
completely deleting data from the mobile storage device by using a commercially available computer data
erasing software.

REACH/RoHS Declaration

You can find our current REACH/RoHS declarations at:

https://www.siemens.com/global/en/home/products/energy/ecotransparency/ecotransparency-down­loads.html

NOTE

You can find more information about activities and programs to protect the climate at the EcoTransparency
website:

https://www.siemens.com/global/en/home/products/energy/ecotransparency.html

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3

Hardware Components and Drawings

3.1 Hardware Components 22

3.2 Terminal Diagram 23

3.3 Dimensional Drawings 25

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Hardware Components and Drawings

3.1 Hardware Components

3.1

Hardware Components

In this manual, SICAM FCM is also referred as device.

Microcontroller

•

The device uses a low-power ARM MCU which includes high-precision 16-bit ADCs.

Battery

•

The device contains a battery with 3.6 V and a capacity of 1.2 Ah.

LCD

•

LCD is used to view real-time values, events, archives, and device parameters.

Keypads

•

The 4 navigation keys are used to navigate through the device menu and to select the desired parame­ters. The functions of the navigation keys are specific to different menu sections.

LEDs

•

The device consists of 3 LEDs which indicate the status of the process.

– FAULT (Red)

Indicates when any distribution-system fault is detected

– COM (Yellow)

Indicates that the communication is active between Modbus master and the SICAM FCM

– RUN (Green)

Indicates the healthy condition of the device and operating on the auxiliary voltage

Digital Input

•

The device consists of 1 digital input for resetting the fault indication.

Digital Output

•

The device consists of 2 digital outputs for indicating fault conditions.

[dw_sfcmhwbd, 1, en_US]

Figure 3-1 SICAM FCM Hardware Block Diagram

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Hardware Components and Drawings

3.2 Terminal Diagram

3.2

Terminal Diagram

The terminal diagram is located on top of the housing and displays the terminal numbers and terminals.

[dw_sfcmtrml, 2, en_US]

Figure 3-2 Terminal Diagram

Table 3-1 Terminal Specifications

Terminal Number Terminal Name Description

(1) 1 Functional ground
(2) N(-)/~ Auxiliary voltage
(3) L(+)/~ Auxiliary voltage
(4) COM Modbus - Common
(5) A/- Modbus - T

(6) B/+ Modbus - R
(7) DI1(-) Digital input (-)

(8) DI1(+) Digital input (+)
(9) DO2 Digital output 2
(10) DO2 Digital output 2
(11) DO1 Digital output 1
(12) DO1 Digital output 1
(13) I1/A Phase current I

(14) I1N Neutral
(15) I2/IN/B Phase current I2 or ground current I
(16) I2/INN Neutral
(17) I3/C Phase current I
(18) I3N Neutral
(19) V
(20)

(21) V
(22)

(23) V
(24)

1

V1N

2

V2N

3

V3N

5

5

5

Voltage input V
Neutral

Voltage input V
Neutral

Voltage input V
Neutral

x

x

1

N

3

1

2

3

5

V1N, V2N, V3N are internally shorted

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Hardware Components and Drawings

3.2 Terminal Diagram

Terminal Connections

You can connect the device terminals with a wire of cross-section ranging from 0.75 mm2 to 2.5 mm2. Use the
following options to connect the terminals:

Spring-cage connection

•

Spring-cage connection is used to connect the upper row of terminals. From terminal 1 to terminal 12.

Screw connection

•

Screw connection is used to connect the bottom row of terminals. From terminal 13 to terminal 24.

The following tables show the technical details of the different connection methods.

Table 3-2 Spring-Cage Connection

Connection Elements Specifications

Connection method Spring cage
Conductor size (solid)
Conductor size (stranded)
Stripping length 8.0 mm
AWG (max.) 12.0
AWG (min.) 24.0

4.0 mm

2.5 mm

2

2

Table 3-3 Screw Connection

Connection Elements Specifications

Connection method Screw connection
Conductor size (solid)
Conductor size (stranded)

1.0 mm

1.0 mm

2

2

Stripping length 8.0 mm
AWG (max.) 16.0
AWG (min.) 26.0
Torque 0.5 Nm
Screwdriver size 3/32 inch or 2.5 mm

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Hardware Components and Drawings

3.3 Dimensional Drawings

3.3

Rear View

Dimensional Drawings

This chapter shows the dimensional drawings and different views of the device.

[le_sfcmrearview, 1, --_--]

Figure 3-3

(1) Power supply
(2) Modbus
(3) Digital input
(4) Digital output 2
(5) Digital output 1
(6) Voltage input
(7) Current input

Rear View with Terminals

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Hardware Components and Drawings

3.3 Dimensional Drawings

Front View

[dw_fcm_front, 1, en_US]

Figure 3-4 Front View

Isometric View

[dw_fcm_iso_view, 1, en_US]

Figure 3-5 Isometric View

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1 A/5 A Adaptor Drawing

Hardware Components and Drawings

3.3 Dimensional Drawings

[le_sfcm1aadap-231015, 1, --_--]

Figure 3-6 1 A/5 A Adaptor

(1) Threaded stud
(2) CT adaptor PCB
(3) Cable assembly

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Hardware Components and Drawings

3.3 Dimensional Drawings

SICAM FCM with Connecting Cable (only for 6MD2322-1AA00-1AA0)

[le_sfcm-capconncbl, 2, --_--]

Figure 3-7

Connecting Cable of SICAM FCM

(1) SICAM FCM
(2) Connecting cable (6MD2322-0AA80-0AB3); necessary for 6MD2322-1AA00-1AA0
(3) Orientation of connecting cable to SICAM FCM voltage-input terminals
(4) SICAM FCM voltage-input terminals
(5) Connecting cable (L1, L2, L3, ground)

(6) Voltage-detection system

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4

Device Functions

4.1 Description 30

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i

i

Device Functions

4.1 Description

4.1

4.1.1

4.1.2

Description

Measurements and Derived Values

The device measures and calculates the values which are displayed on the HMI/Modbus. The following table
shows the measured values and derived values of the device when it is connected to the medium-voltage
system and low-voltage system.

Table 4-1 Measurements and Derived Values

Measurements Derived Values

Phase I1, phase I2, phase I
Phase I1, ground IN, phase I
Phase V1, V2, V
Frequency 50 Hz/60 Hz –

– Active power, reactive power, and apparent power
– cos φ (power factor)
– Phase angle
– Active import energy, active export energy, reactive import energy, and

3

3

3

Fault Detection

IN and 2nd harmonic of the phase current
I2 and 2nd harmonic of the phase current
Phase-to-phase voltages (V12, V23, V31)

reactive export energy

The device determines the fault based on the following criteria:

Overcurrent detection for phase currents (I>, I>>) and ground current (IN>)

•

Ground-current and neutral-point displacement voltage (IN> and VNG>) for resonant-grounded/isolated

•

system

where VNG is an internally calculated value.
You can configure the individual time-delay setting for phase current and ground currents.

Table 4-2

tI> Timer for the low-set current threshold I>
tI>> Timer for the high-set current threshold I>>
tIN> Timer for the ground-current threshold IN>

tVNG> Timer for neutral-point displacement voltage VNG>

NOTE

For fault detection, the highest values of one of the timers are considered.

The device uses the Definite Minimum Time (DMT) or Inverse Definite Minimum Time (IDMT) characteristics
for detecting the fault. It identifies the type of the fault and also determines the direction.

The following logic diagram shows the fault indication.

Timer Configuration

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