GE Industrial Solutions MX350 User Manual

GE Digital Energy

Multilin

MX350

Automatic Transfer Control

System

Low voltage power transfer control

Instruction manual

MX350 revision: 1.2x

Manual P/N: 1601-9071-A2

GE publication code: GEK-113497A

Copyright © 2010 GE Multilin

GE Digital Energy

Power Quality / Zenith

830 W. 40th Street

Chicago IL, 60609

USA

Tel: [phone]

email: [e-mail]

Internet: http://www.gedigitalenergy.com/ats

*1601-9071-A2*

		ISTE	R
	G
R	E			E
					D
ISO9001:2000
E					IN
G				L
			I
		MULT

GE Multilin's Quality Management System is registered to ISO9001:2000

QMI # 005094

© 2010 GE Multilin Incorporated. All rights reserved.

GE Multilin MX350 Automatic Transfer Control System instruction manual for revision 1.2x.

MX350 Automatic Transfer Control System, EnerVista, EnerVista Launchpad, EnerVista MX350 Setup, and FlexLogic are registered trademarks of GE Multilin Inc.

The contents of this manual are the property of GE Multilin Inc. This documentation is furnished on license and may not be reproduced in whole or in part without the permission of GE Multilin. The content of this manual is for informational use only and is subject to change without notice.

Part number: 1601-9071-A2 (April 2010)

Table of Contents

1. INTRODUCTION	Overview ............................................................................................................	1 - 1
	Cautions and warnings...............................................................................................................	1 - 1
	Description of the Automatic Transfer Controller system..........................................	1 - 2
	ATS types ...........................................................................................................................................	1 - 5
	Specifications ....................................................................................................	1 - 6
	Timing specifications ...................................................................................................................	1 - 6
	Protection specifications............................................................................................................	1 - 6
	User interface specifications....................................................................................................	1 - 7
	Metering and monitoring specifications.............................................................................	1 - 7
	Inputs specifications ....................................................................................................................	1 - 7
	Outputs specifications ................................................................................................................	1 - 8
	Power supply specifications.....................................................................................................	1 - 8
	Communications specifications .............................................................................................	1 - 9
	Testing and certification.............................................................................................................	1 - 9
	Physical specifications ..............................................................................................................	1 - 10
	Environmental specifications.................................................................................................	1 - 10
	Order codes for MX350 .................................................................................	1 - 11
	Example of an MX350 order code .......................................................................................	1 - 11
2. INSTALLATION	Mechanical installation ...................................................................................	2 - 1
	Dimensions.......................................................................................................................................	2 - 1
	Product identification ..................................................................................................................	2 - 2
	Mounting ...........................................................................................................................................	2 - 2
	Module withdrawal and insertion..........................................................................................	2 - 4
	Module and terminal identification.......................................................................................	2 - 6
	Electrical installation .......................................................................................	2 - 7
	Power supply module..................................................................................................................	2 - 8
	CPU module......................................................................................................................................	2 - 9
	Input/Output modules...............................................................................................................	2 - 10
	Dielectric strength testing .......................................................................................................	2 - 14

3. INTERFACING WITH THE MX350 AT CONTROLLER

Graphical control panel...................................................................................	3 - 1
Introduction to the graphical control panel......................................................................	3 - 1
MX350 graphical display pages..............................................................................................	3 - 6
MX350 programming techniques........................................................................................	3 - 13
EnerVista™ MX350 Setup Software............................................................	3 - 17
Software requirements.............................................................................................................	3 - 17
Troubleshooting the USB driver............................................................................................	3 - 17
Installing the EnerVista™ MX350 Setup software........................................................	3 - 20
Connecting EnerVista MX350 Setup to the relay .........................................................	3 - 20
Working with setpoints and setpoint files........................................................................	3 - 23
Upgrading relay firmware .......................................................................................................	3 - 29
Power analysis ...............................................................................................	3 - 30
Waveform capture......................................................................................................................	3 - 30
Data logger.....................................................................................................................................	3 - 34

4. ACTUAL VALUES

Actual values overview

....................................................................................4 - 1

MX350 AUTOMATIC TRANSFER CONTROL SYSTEM – INSTRUCTION MANUAL

toc–i

	Metering ............................................................................................................	4 - 2
	Current metering............................................................................................................................	4 - 2
	Voltage metering............................................................................................................................	4 - 2
	Power metering ..............................................................................................................................	4 - 3
	PQ metering......................................................................................................................................	4 - 3
	Status.................................................................................................................	4 - 4
	Status messages ............................................................................................................................	4 - 4
	Input and output status ..............................................................................................................	4 - 4
	System Page.....................................................................................................................................	4 - 5
	Flex Page............................................................................................................................................	4 - 5
5. SETPOINTS	Understanding setpoints................................................................................	5 - 1
	Setpoint text abbreviations .......................................................................................................	5 - 2
	Configuration setpoints .................................................................................	5 - 3
	ATS setpoints....................................................................................................................................	5 - 3
	ATS types............................................................................................................................................	5 - 4
	Chicago Transfer Alarm Panel (CTAP) option ....................................................................	5 - 7
	Common ATS setpoints ...............................................................................................................	5 - 8
	Current and voltage transformers.........................................................................................	5 - 9
	Inputs................................................................................................................................................	5 - 10
	Outputs ............................................................................................................................................	5 - 10
	Communications setpoints.....................................................................................................	5 - 10
	System..............................................................................................................................................	5 - 12
	Events ...............................................................................................................................................	5 - 13
	Zenith................................................................................................................................................	5 - 13
	Operation setpoints ......................................................................................	5 - 14
	Timers ...............................................................................................................................................	5 - 15
	Control .............................................................................................................	5 - 16
	General.............................................................................................................................................	5 - 16
	Interlock...........................................................................................................................................	5 - 18
	Alarms ..............................................................................................................................................	5 - 19
	Security............................................................................................................	5 - 20
6. EXERCISER	Information.......................................................................................................	6 - 1
	Setup ....................................................................................................................................................	6 - 2
	Test........................................................................................................................................................	6 - 2
7. DIAGNOSTICS	Events ................................................................................................................	7 - 1
	Statistical information....................................................................................	7 - 3
	Phasors..............................................................................................................	7 - 4
	Product information........................................................................................	7 - 5
	Reports ..............................................................................................................	7 - 6
	Waveform .........................................................................................................	7 - 7
	Datalog ..............................................................................................................	7 - 8
8. FLEXLOGIC™	FlexLogic™ overview.......................................................................................	8 - 1
	Introduction to FlexLogic™........................................................................................................	8 - 1
9. COMMUNICATIONS	Communications interfaces ..........................................................................	9 - 1

toc–ii

MX350 AUTOMATIC TRANSFER CONTROL SYSTEM – INSTRUCTION MANUAL

Digital Energy

Multilin

MX350 Automatic Transfer Control

System

Chapter 1: Introduction

Overview

The MX350 is a modular control and monitoring system designed specifically for lowvoltage transfer switch application. The MX350 provides the following key benefits.

•Flexible control and communication options to suit any low-voltage transfer switch application.

•Small footprint.

•Modular design reduces the number of spare components for maintenance and testing.

•Integrated pushbuttons and LED indicators reduce external components and wiring.

•DIN rail and Panel Mounting.

•Multiple communication protocols allows simple integration into monitoring and control systems.

•Graphical control panel interface provides local control and access to system information.

•Automation FlexLogic™ with interlocking and programmable logic control.

Cautions and warnings

Before attempting to install or use this device, it is imperative that all caution and danger indicators in this manual are reviewed to help prevent personal injury, equipment damage, or downtime. The following icons are used to indicate notes, cautions, and dangers.

Figure 1: Note icons used in the documentation

NOTE	CAUTION	DANGER

MX350 AUTOMATIC TRANSFER CONTROL SYSTEM – INSTRUCTION MANUAL

1–1

OVERVIEW

CHAPTER 1: INTRODUCTION

The standard note icon emphasizes a specific point or indicates minor problems that may occur if instructions are not properly followed.

The caution icon indicates that possible damage to equipment or data may occur if instructions are not properly followed.

The danger icon provides users with a warning about the possibility of serious or fatal injury to themselves or others.

Description of the Automatic Transfer Controller system

The MX350 is equipped with a graphical control panel:

•Includes a 89 mm (3.5-inch) 320 by 240 pixel backlit colour LCD screen, 15 pushbuttons, and 7 LED indicators, which provide access to actual values, fault and alarm lists, event records, and setting configuration. A USB port is provided for laptop computer connection.

Figure 2: MX350 feature overview

Graphical display

LED indication

• Large metering values

• Time delay indication

Ease of use

• Wide viewing angle

• Alarm indication

• Graphical interface

• Transfer inhibit indication

• Self-description

• Source available & connected

indication

Mounting options

• DIN Rail

• Through door

Integrated functionality
• Metering, control
• Event recorder											Front panel control
	Soft key navigation							Front port access
	• Graphical module control							• USB for laptop connection			• Integrated device control
											• Dedicated control keys
											889723A1.CDR

The MX350 includes the following input/output capabilities:

•5 to 25 contact outputs

•5 to 32 contact inputs

The following option packages are available:

Option A:

•Full function ATS control with full sensing and control capabilities, depending on order option.

•Expanded diagnostics, high-speed 256-event capture, 365-day exerciser, EnerVista launchpad, USB interface for uploading and downloading setup parameters

•4 programmable inputs and 4 outputs assignable to additional ATS features

•Full complement of programmable ATS control switches (AUTO/MAN, Preferred Source selector, Commit/No Commit Xfer, Transition Mode Select (for Closed Transition switch models).

Option B:

Option Package A plus:

•10 customer programmable digital and 10 analog alarms

1–2	MX350 AUTOMATIC TRANSFER CONTROL SYSTEM – INSTRUCTION MANUAL

CHAPTER 1: INTRODUCTION

OVERVIEW

•20 channel data logger, customer configurable sample period from 1 cycle to 60 minutes

•Waveform capture, 10 channels, up to 256 cycles each 16 samples/sec

•Auto Load Shed with voltage, frequency and kW triggers

Option C:

Option Package B plus:

•4 additional inputs and outputs (total 8 in, 8 out

Option D:

Option Package C plus:

•4 additional inputs and outputs (total - 12 in, 12 out)

•FlexLogic for user-customized control logic

Option M:

• Configuration for Manual operation only (non-Automatic) A single-line diagram for the MX350 is shown below.

MX350 AUTOMATIC TRANSFER CONTROL SYSTEM – INSTRUCTION MANUAL

1–3

OVERVIEW

CHAPTER 1: INTRODUCTION

Figure 3: Single line diagram

TO

UTILITY (SOURCE-1)

NOTE:1

NOTE:1

X1

H1 (1) CT

NOTE:1

TO LOAD

SUPPLIED BY OTHERS

NOTE:1

			CT CARD					K
								CARD
			NEUTRAL	50G	51G
			METERING	51R	46
								P
			VOLTAGE
			CARD		27	59	47
			SOURCE
			1
	X1	UTA		METERING
			V, A, W, VAR, VA, PF, HZ
	H1
(3)								I/O
CT'S			VOLTAGE				25	CARD
			CARD		27	59	47
			SOURCE
			2

			POWER
		170VDC	SUPPLY
			ATS
			CONTROLLER
		TO K CARD		TCP/IPMODBUS-ETHERNET
	24VDC		RTUMODBUS-RS485
			AND
		I/O CARD
GEN

SOURCE-2

ENGINE START CONTACT

889739A1.CDR

NOTE:1- FOURTH POLE/NEUTRAL POLE IS AN OPTIONAL FEATURE.

Table 1: MX350 protection functions

ANSI device	Description
25	Synch check
27	Undervoltage
46	Current balance
47	Voltage phase reversal
50G (option)	Ground instantaneous overcurrent
51G (option)	Ground time overcurrent
51 (option)	Overcurrent
59	Overvoltage

1–4	MX350 AUTOMATIC TRANSFER CONTROL SYSTEM – INSTRUCTION MANUAL

CHAPTER 1: INTRODUCTION

OVERVIEW

ATS types

Automatic Transfer switch types to be controlled by the Controller are Standard (Open) Transition, Delayed Transition, and Closed Transition. The figure below shows the one-line diagram for all three types.

Figure 4: Automatic transfer switch types

In addtion, the MX350 can control the Bypass/Isolation type version of the three basic ATS types.

MX350 AUTOMATIC TRANSFER CONTROL SYSTEM – INSTRUCTION MANUAL

1–5

SPECIFICATIONS

CHAPTER 1: INTRODUCTION

Specifications

Specifications are subject to change without notice.

NOTE

Timing specifications

GENERAL TIMING ACCURACY

Accuracy:................................................................

±500 ms

Protection specifications

OVERVOLTAGE

Pickup level:...........................................................	1.05 to 1.10 × VT in steps of 0.01 (programmable)
Dropout: ..................................................................	1.03 to 1.08 × VT in steps of 0.01 (programmable)
Time delay: ............................................................	No programmable time delay

UNDERVOLTAGE

Pickup level:...........................................................	0.75 to 0.99 × VT in steps of 0.01 (programmable)
Dropout: ..................................................................	0.85 to 1.00 × VT in steps of 0.01 (programmable)
Time delay: ............................................................	No programmable time delay

OVERFREQUENCY

Pickup level:...........................................................	50.1 to 63.0 Hz in steps of 0.1 (programmable)
Dropout: ..................................................................	50.0 to 62.9 Hz in steps of 0.1 (programmable)
Time delay: ............................................................	No programmable time delay
Accuracy:................................................................	±0.05 Hz

UNDERFREQUENCY

Pickup level:...........................................................	45.0 to 59.9 Hz in steps of 0.1 (programmable)
Dropout: ..................................................................	45.1 to 60.0 Hz in steps of 0.1 (programmable)
Time delay: ............................................................	No programmable time delay
Accuracy:................................................................	±0.05 Hz

POWER FACTOR

Pickup level:...........................................................	0.99 lag to 0.99 lead in steps of 0.01 (programmable)
Dropout: ..................................................................	pickup + hysteresis
Time delay: ............................................................	0 to 65535 seconds in steps of 1
Accuracy:................................................................	±0.05

VOLTAGE IMBALANCE

Pickup level:...........................................................	0.05 to 0.20 in steps of 0.01 (programmable)
Dropout: ..................................................................	0.03 to 0.18 in steps of 0.01 (programmable)
Time delay: ............................................................	1 to 60 seconds in steps of 1

CURRENT IMBALANCE

Range:......................................................................	4 to 40% in steps of 1
Pickup level:...........................................................	0.04 to 0.40 in steps of 0.01 (programmable)
Time delay: ............................................................	1 to 60 seconds in steps of 1 s
Timing accuracy: ................................................	±500 ms
Elements:................................................................	alarm
Accuracy:................................................................	±2%

1–6	MX350 AUTOMATIC TRANSFER CONTROL SYSTEM – INSTRUCTION MANUAL

CHAPTER 1: INTRODUCTION SPECIFICATIONS

CALCULATION METHOD

( [IM - IAV] / IAV ) x 100%

Where:

IAV = average phase current

IM = current in a phase with maximum deviation from IAV

THD ALARM (CURRENT/VOLTAGE)

Pickup level: ...........................................................	0.1% to 100.0% in steps of 0.1% (programmable)
Time delay:.............................................................	0 to 65535 seconds in steps of 1

OVERCURRENT (PER PHASE/NEUTRAL)

Pickup level: ...........................................................	0.01 to 2.00 × Nominal Current in steps of 0.01%
	(programmable)
Time delay:.............................................................	0 to 65535 seconds in steps of 1

User interface specifications

GRAPHICAL CONTROL PANEL

Size: ...........................................................................	height 102mm, width 153mm, depth 35mm
LCD: ...........................................................................	89 mm (3.5-inch) colour, 320 by 240 pixels
LED indicators: .....................................................	7 LEDs
Pushbuttons: .........................................................	Alarm Reset, Test, Ctrl, Info, plus 11 LCD screen display
	control keys
Ports:.........................................................................	USB 2.0 type Mini-B for laptop computer connection

Metering and monitoring specifications

EVENT RECORDER

Capacity: .................................................................	256 events
Data storage:........................................................	non-volatile memory

FREQUENCY METERING

Range: ......................................................................	40.00 to 70.00 Hz in steps of 0.01
Accuracy: ................................................................	±0.05 Hz

POWER METERING

Real power range: ..............................................	–2000.0 to 2000.0 kW in steps of 0.1
Apparent power range:....................................	0.0 to 2500.0 kVA in steps of 0.1
Accuracy: ................................................................	±2.0% of full scale with 5 A CT

POWER FACTOR METERING

Range: ......................................................................	–0.99 to +0.99 in steps of 0.01
Accuracy: ................................................................	±0.05

Inputs specifications

CONTROL VOLTAGE INPUT

Input range: ...........................................................	60 V to 300 V AC
Nominal frequency: ...........................................	50 or 60 Hz

DIGITAL INPUTS

Nominal input voltage:.....................................	24 V DC
Recognition time:................................................	2 cycles
Continuous current draw:...............................	4 mA
Type:..........................................................................	opto-isolated inputs
External switch: ...................................................	wet contact

MX350 AUTOMATIC TRANSFER CONTROL SYSTEM – INSTRUCTION MANUAL

1–7

SPECIFICATIONS

CHAPTER 1: INTRODUCTION

PHASE CURRENT INPUTS

Range:......................................................................	2.5 to 7.5 A (1.5 × CT)
Input type:..............................................................	5 A
Frequency: .............................................................	50 or 60 Hz
Accuracy:................................................................	±2.0% of Full Scale, where Full Scale = 1.5 × CT Primary
Withstand (at 5A nominal):.............................	0.2 s at 100×
	1.0 s at 50×
	2.0 s at 40×
	continuous at 3× rated current

PHASE VOLTAGE INPUTS (THREE-PHASE VOLTAGE)

Input range:...........................................................	120 to 600 V (nominal)
Nominal frequency: ...........................................	50 or 60 Hz
Accuracy:................................................................	±2% of reading, or ±1 V, whichever is greater

Phase current Input Type of 1 A is not supported.

NOTE

Outputs specifications

FORM-C RELAY

Contact material:................................................	silver-alloy
Operate time:........................................................	10 ms
Maximum contact load: ..................................	10 mA at 5 V DC
Maximum switching rate:...............................	300 operations per minute (no load), 30 operations per
	minute (load)
Mechanical life:....................................................	10 000 000 operations
Continuous current:...........................................	10 A
Make and carry for 0.2s:..................................	30 A per ANSI C37.90

FORM-C OUTPUT RELAY BREAK CAPACITY

AC resistive, 120 V AC: ......................................	10	A normally-open, 5 A normally-closed
AC resistive, 240 V AC: ......................................	10	A normally-open, 8 A normally-closed
AC inductive, PF = 0.4 pilot duty:..................	2.5 A
DC resistive, 30 V DC: ........................................	10	A

SOLID STATE OUTPUT RELAY

Operate time:........................................................	< 1 ms
Nominal voltage:.................................................	24 V DC
Maximum current:..............................................	0.5 A

Power supply specifications

POWER SUPPLY

Nominal:..................................................................	120 to 240 V AC
	125 to 250 V DC
Range:......................................................................	60 to 300 V AC (50 and 60 Hz)
	84 to 250 V DC
Ride-Through:.......................................................	35 ms

ALL RANGES

Voltage withstand:.............................................	2 × highest nominal voltage for 10 ms
Power consumption: .........................................	16 W typical, 25 W maximum

1–8	MX350 AUTOMATIC TRANSFER CONTROL SYSTEM – INSTRUCTION MANUAL

CHAPTER 1: INTRODUCTION

SPECIFICATIONS

Communications specifications

ETHERNET (COPPER)

Modes:......................................................................	10/100 MB (auto-detect)
Connector:..............................................................	RJ-45
SNTP clock synchronization error: ..............	<200 ms (typical)
Protocol: ..................................................................	Modbus TCP

RS485 PORT

Port: ...........................................................................	opto-isolated
Baud rates:.............................................................	up to 115 kbps
Protocol: ..................................................................	Modbus RTU, half-duplex
Maximum distance: ...........................................	1200 m
Isolation:..................................................................	2 kV

USB PORT

Standard specification:....................................	Compliant with both USB 2.0 and USB 1.1
Data transfer rate:..............................................	USB device emulating serial communications port at
	115 kbps
Connector:..............................................................	USB2.0 Mini-B
Testing and certification
TESTING AND CERTIFICATION
Test	Reference Standard	Test Level
Dielectric Voltage Withstand:	EN60255-5	2.0 KV
Impulse Voltage Withstand:	EN60255-5	5 KV
Insulation Resistance:	EN60255-5	500 V DC > 100 Mohm
Damped Oscillatory:	IEC61000-4-18/IEC60255-22-1	2.5 KV CM, 1 KV DM
Electrostatic Discharge:	EN61000-4-2/IEC60255-22-2	Level 4
RF Immunity:	EN61000-4-3/IEC60255-22-3	Level 3
Fast Transient Disturbance:	EN61000-4-4/IEC60255-22-4	Level 4
Surge Immunity:	EN61000-4-5/IEC60255-22-5	Level 3 & 4
Conducted RF Immunity:	EN61000-4-6/IEC60255-22-6	Level 3
Power magnetic Immunity:	IEC61000-4-8	Level 4
Voltage Dip & Interruption:	IEC61000-4-11	0,40,70% dips 250/300cycle
		interrupts
Radiated & Conducted Emissions:	CISPR11 /CISPR22/ IEC60255-25	Class A
Ingress Protection:	IEC60529	IP20 (base unit) IP54 (Control
		Panel)
Environmental (Cold):	IEC60068-2-1	-20oC 16 hrs
Environmental (Dry heat):	IEC60068-2-2	85oC 16hrs
Relative Humidity Cyclic:	IEC60068-2-30	6-day variant 2
Fast Transient Disturbance:	IEEE C37.90.1	4 KV CM & DM
SWC Damped Oscillatory:	IEEE C37.90.1	2.5 KV CM
Electrostatic Discharge:	IEEE C37.90.3	8 KV CD, 15 KV AD

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SPECIFICATIONS

CHAPTER 1: INTRODUCTION

APPROVALS
	Applicable Council Directive	According to
CE compliance:	Low voltage directive	EN60255-5, EN60947-1, EN60947-6-1
	EMC Directive	EN61000-6-2/ EN61000-6-4
ISO:	Manufactured under a registered	ISO9001
	quality program

Physical specifications

DIMENSIONS

Size: ...........................................................................	Base: 62 mm [2.44"] (W) × 90 mm [3.54"] (H) × 113 mm [4.45"]
	(D) (+ terminals 10mm [0.39"])
	Expansion: 62 mm [2.44"] (W) × 90 mm [3.54"] (H) × 113 mm
	[4.45"] (D)
	GCP: 153 mm [6.02"] (W) × 102 mm [4.02"] (H) × 35 mm [1.38"]
	(D)
Weight (Base):.......................................................	0.75 kg [1.65 lb]
Environmental specifications
ENVIRONMENTAL SPECIFICATIONS
Ambient temperatures:
Storage/shipping:	- 40oC to 90oC *
Operating:	-20oC to 60oC * (Base Unit and Basic Control Panel)
	-20oC to 50oC * (Graphical Control Panel)
* 1" around Base Unit
Humidity:	Operating up to 95% (non condensing) @ 55oC (As
	per IEC60068-2-30 Variant 2, 6days)
Altitude:	2000 m (max)
Overvoltage Category:	II
Ingress Protection:	IP20 (Base Unit), IP54 (Control Panel)

1–10	MX350 AUTOMATIC TRANSFER CONTROL SYSTEM – INSTRUCTION MANUAL

CHAPTER 1: INTRODUCTION

ORDER CODES FOR MX350

Order codes for MX350

The information to specify an MX350 relay is provided in the following order code figure.

Figure 5: MX350 order codes

Example of an MX350 order code

MX350-GEHE3BBAKLL: MX350 with graphical control panel incl. USB port, English language display, high voltage control power supply (84 to 250 VDC or 60 to 300VAC), RS485 Modbus RTU port and 10/100 Modbus TCP/IP Ethernet port), data logger and waveform capture, source 1 voltage sensing, source 2 voltage sensing, load current sensing, P relay function, and two input/output cards.

MX350 AUTOMATIC TRANSFER CONTROL SYSTEM – INSTRUCTION MANUAL

1–11

ORDER CODES FOR MX350

CHAPTER 1: INTRODUCTION

1–12	MX350 AUTOMATIC TRANSFER CONTROL SYSTEM – INSTRUCTION MANUAL

Digital Energy

Multilin

MX350 Automatic Transfer Control

System

Chapter 2: Installation

Mechanical installation

This section describes the mechanical installation of the MX350 system, including dimensions for mounting and information on module withdrawal and insertion.

Dimensions

The MX350 is packaged in a modular arrangement.

The dimensions of the MX350 are shown below. Additional dimensions for mounting and panel cutouts are shown in the following sections.

MX350 AUTOMATIC TRANSFER CONTROL SYSTEM – INSTRUCTION MANUAL

2–1

MECHANICAL INSTALLATION

CHAPTER 2: INSTALLATION

Figure 1: MX350 dimensions

Product identification

The product identification label is located on the side panel of the MX350. This label indicates the product model, serial number, firmware revision, and date of manufacture.

Figure 2: MX350 label

2.425”

(61.6 mm)

Model:

Serial Number:

Firmware:

Mfg. Date:

0.525”

889748A1.CDR

(13.3 mm)

Mounting

The MX350 can be mounted three ways: standard panel mount, DIN rail mount, and screw mount for high vibration environments.

The standard panel mount and cutout dimensions are illustrated below.

2–2	MX350 AUTOMATIC TRANSFER CONTROL SYSTEM – INSTRUCTION MANUAL

CHAPTER 2: INSTALLATION

MECHANICAL INSTALLATION

Figure 3: Panel mounting and cutout dimensions

#4 - 40x3/8in SELF-TAP PAN HD PHILIPS QTY: 6 (SUPPLIED); GE PART NO. 1402-0017 TIGHTENING TORQUE: 8 lb-in

INSTALL RELAY	REAR OF PANEL
FROM FRONT
OF THE PANEL
	CUTOUT AND
	MOUNTING HOLES

5.580”	0.105”
(141,73 mm)	(2,67 mm)
	0.138”
	(3,49 mm)
	1.750”
	(44,45 mm)

3.775”

(95,89 mm) 3.500”

(88,90 mm)

5.790”

(147,07 mm) 0.130” (QTY: 6)

(3,30 mm)

889725A1.CDR

The DIN rail mounting is illustrated below. The DIN rail conforms to EN 50022.

To avoid the potential for personal injury due to fire hazards, ensure the unit is mounted in a safe location and/or within an appropriate enclosure.

CAUTION

Figure 4: DIN rail mounting

SNAP-IN THE DIN CLIPS (QTY: 4)

FOR DIN RAIL MOUNTING

0.30” (7,6 mm)

1.38” (35,1 mm)

DIN 3 RAIL

889726A1.CDR

The screw mount for high vibration environments is illustrated below.

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2–3

MECHANICAL INSTALLATION

CHAPTER 2: INSTALLATION

Figure 5: Screw mounting

MEETS VIBRATION REQUIREMENT OF

IEC 60255 SEC 21.1, 21.2, & 21.3

2.250” (57,15 mm)

#6 -32 THREADED HOLE

QTY: 2

4.100” (104,14 mm)

889727A1.CDR

Module withdrawal and insertion

DANGER

CAUTION

Module withdrawal and insertion may only be performed when control power has been removed from the unit. Inserting an incorrect module type into a slot may result in personal injury, damage to the unit or connected equipment, or undesired operation!

Proper electrostatic discharge protection (for example, a static strap) must be used when coming into contact with modules while they are removed from the MX350.

The MX350 is a modular protection system. This allows for easy withdrawal and insertion of modules for fast replacement. Modules must only be replaced in their original factory configured slots.

Use the following procedure to withdraw a module.

1.Ensure that control power has been removed from the MX350.

2.Record the slot location of the module to ensure that the same or replacement module is inserted into the correct slot.

3.Remove the two captive screws at the top and bottom of the module.

4.Slide a flat-blade screwdriver into the opening above the module marked by the two arrows on top of the MX350 case.

5.Press down on the screwdriver and pivot towards the unit to unlatch the module from the MX350 case.

2–4	MX350 AUTOMATIC TRANSFER CONTROL SYSTEM – INSTRUCTION MANUAL

CHAPTER 2: INSTALLATION

MECHANICAL INSTALLATION

Figure 6: Removing a module from the MX350

889733A1.CDR

Use the following procedure to insert a module.

1.Ensure that control power has been removed from the MX350.

2.Ensure that the module is being inserted into the correct slot.

3.Align the module card edges with the slot track as shown in the diagram below.

4.Gently slide the modules into the slot until the modules latch into the opening marked by the two arrows on top of the MX350 case.

5.Attach the two captive screws to anchor the module to the case (use a tightening torque of 3.5 lb.-in.).

Figure 7: Inserting modules into the MX350

889734A1.CDR

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MECHANICAL INSTALLATION

CHAPTER 2: INSTALLATION

Module and terminal identification

The MX350 input/output and metering modules are labeled with the “IO_” prefix followed by a one-character identifier as follows.

Table 1: Input/output and metering module nomenclature

Module	Description
IO_A	CT module
IO_B	VT module
IO_K	4 inputs, 4 outputs, plus relay for engine control
IO_L	7 inputs, 5 outputs

NOTE

The MX350 terminals are labeled with a two-character identifier. The first character identifies the module slot position and the second character identifies the terminals within the module. For example, the first terminal in a module in slot F is identified as “F1”.

Do not confuse the slot designation with the module ordering designation. That is, terminal “F1” does not imply an IO_F module. Rather, it indicates the first terminal of whatever module is in slot F, which can only be an IO_K module.

2–6	MX350 AUTOMATIC TRANSFER CONTROL SYSTEM – INSTRUCTION MANUAL

CHAPTER 2: INSTALLATION

ELECTRICAL INSTALLATION

Electrical installation

Reserved

Switched power supply

allows AC or DC control voltage

Optional TCP/IP

Ethernet

This section describes the electrical installation of the MX350 system. An overview of the MX350 terminal connections is shown below.

Figure 8: MX350 terminal connection overview

	Three-phase plus	Expansion module		Expansion module
		to base unit with a		to base/expansion unit
	ground/neutral
		single connector		with a single connector
RS485 communications	VT inputs		K Card
		CT Input		L Card	L Card

889740A2.CDR

Reserved

Expansion module

Expansion module

The MX350 can contain up to ten modules. The first four modules (slots A through D) reside in the base unit while all subsequent modules (slots E and J) reside in expansion units. Each expansion unit can contain up to two modules. Slots A through G make up the basic MX350. The next three modules (slots H through J) are optional I/O modules.

Table 2: Module slot position

Slot	Module types
A	Power supply module
B	CPU module with communications
C	IO_B module
D	IO_B module
E	IO_A module (optional)
F	IO_K module
G	IO_L module
H	IO_L module (optional)
I	IO_L module (optional)

The following figure shows a typical module arrangement for an expanded unit.

Use gauge size appropriate for the voltage and current draw of the device.

CAUTION

The MX350 is not to be used in any way other than described in this manual.

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ELECTRICAL INSTALLATION

CHAPTER 2: INSTALLATION

Figure 9: Typical module arrangement

Slot position		A	B	C	D	E	F	G	H	I

	L	V-
PSU		L
60-300 VAC	N	C
84-250 VDC		H
		V+
		MS
		NS
		GROUND CT I/P
	E200434

LISTED

IND.CONT.EQ.

52TL

THERM RS485 FIELD BUS

+

–

C

+

–

SG

R

I

10/100 ETHERNET

																						14						14						14						14
		8						8							8							13						13						13						13
																						12						12						12						12
		7						7							7							11						11						11						11
		6						6							6							10						10						10						10
																						9						9						9						9
		5						5							5							8						8						8						8
		4						4							4							7						7						7						7
																						6						6						6						6
		3						3							3							5						5						5						5
		2						2							2							4						4						4						4
																						3						3						3						3
		1						1							1							2						2						2						2
																						1						1						1						1

Base unit

Expansion modules

889749A1.CDR

Power supply module

The power supply module in slot A supplies control power to the MX350 system. A supply voltage between 60 to 300 V AC or 84 to 250 V DC is required to power the MX350

Check the voltage rating of the unit before applying control power! Control power outside of the operating range of the power supply will damage the MX350.

CAUTION

2–8	MX350 AUTOMATIC TRANSFER CONTROL SYSTEM – INSTRUCTION MANUAL

CHAPTER 2: INSTALLATION

ELECTRICAL INSTALLATION

CPU module

RS485 connections

CAUTION

The main CPU module and optional communications board is contained in slot B. The main CPU module provides a Modbus RTU RS485 port. The optional communications board provides an Ethernet port.

Figure 10: Typical RS485 connection

ZT (*)

OPTOCOUPLER

DATA	COM

SCADA, PLC, OR

PERSONAL COMPUTER

GROUND THE SHIELD AT THE

SCADA/PLC/COMPUTER ONLY

OR THE UNIT ONLY

(*)TERMINATING IMPEDANCE AT EACH END (typically 120 ohms and 1 nF)

		TWISTED PAIR	IED
	SHIELD
		B1	RS485 +
			OPTOCOUPLER
		B2	RS485 -

DATA

B3 COMMON

UP TO 32 IEDs, MAXIMUM CABLE LENGTH OF 1200 m (4000 ft.)

	IED
RS485 +
RS485 -
COMMON
	IED
ZT (*)
RS485 +
RS485 -
	LAST
COMMON	DEVICE

889745A1.CDR

One two-wire RS485 port is provided. Up to 32 MX350 IEDs can be daisy-chained together on a communication channel without exceeding the driver capability. For larger systems, additional serial channels must be added. Commercially available repeaters can also be used to add more than 32 relays on a single channel. Suitable cable should have a characteristic impedance of 120 ohms (for example, Belden #9841) and total wire length should not exceed 1200 meters (4000 ft.). Commercially available repeaters will allow for transmission distances greater than 1200 meters.

Voltage differences between remote ends of the communication link are not uncommon. For this reason, surge protection devices are internally installed across all RS485 terminals. Internally, an isolated power supply with an optocoupled data interface is used to prevent noise coupling.

To ensure that all devices in a daisy-chain are at the same potential, it is imperative that the common terminals of each RS485 port are tied together and grounded only once, at the master or at the MX350. Failure to do so may result in intermittent or failed communications.

The source computer/PLC/SCADA system should have similar transient protection devices installed, either internally or externally. Ground the shield at one point only, as shown in the figure above, to avoid ground loops.

Correct polarity is also essential. The MX350 IEDs must be wired with all the positive (+) terminals connected together and all the negative (–) terminals connected together. Each relay must be daisy-chained to the next one. Avoid star or stub connected configurations. The last device at each end of the daisy-chain should be terminated with a 120 ohm

¼ watt resistor in series with a 1 nF capacitor across the positive and negative terminals. Observing these guidelines will ensure a reliable communication system immune to system transients.

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ELECTRICAL INSTALLATION

CHAPTER 2: INSTALLATION

Input/Output modules

Phase current inputs (IO_A module)

Figure 11: Typical phase current input connections
						Power flow
A
B
C
N
To switchgear
ground bus	–	+
	N	L	E1	E2	E3	E4	E5	E6	E7	E8
	Control power		CT1		CT2		CT3		G/F
				Phase current inputs

Automatic Transfer Control System

889744A1.CDR

The MX350 has three channels for phase current inputs, plus an additional channel input for ground/neutral current, each with an isolating transformer. The phase CTs should be chosen so the nominal current is not less than 50% of the rated phase CT primary. Ideally, the phase CT primary should be chosen such that the nominal current is 100% of the phase CT primary or slightly less, never more. This will ensure maximum accuracy for the current measurements. The maximum phase CT primary current is 4000 A.

The MX350 measures up to 1.5 times the phase current nominal rating. CTs with 1 A or 5 A secondaries must be used if the FLA is greater than 5 A. The chosen CTs must be capable of driving the MX350 phase CT burden.

Polarity of the phase CTs is critical for negative-sequence unbalance calculation, power measurement, and residual ground current detection (if used).

CAUTION

2–10	MX350 AUTOMATIC TRANSFER CONTROL SYSTEM – INSTRUCTION MANUAL

CHAPTER 2: INSTALLATION

ELECTRICAL INSTALLATION

Phase voltage inputs (IO_B module)

The MX350 has three channels for AC voltage inputs. There are no internal fuses or ground connections on the voltage inputs. Polarity is critical for correct power measurement and voltage phase reversal operation.

Figure 12: Wye voltage connection

LOAD

	N
Typically	A	Typically
generator	B	utility
	C

–	+					–	+
N	L	D1 D2	D3 D4	D5 D6	D7 D8	N	L	C1 C2	C3 C4	C5 C6	C7 C8
Control power		VT1	VT2	VT3	N/C	Control power		VT1	VT2	VT3	N/C
		Phase voltage inputs						Phase voltage inputs
Auto Transfer Control						Auto Transfer Control

889735A1.CDR

Figure 13: Delta voltage connection

LOAD

From

A

From

Source 2

B

Source 1

(generator) C

(utility)

–

+

–

+

N

L

D1 D2

D3 D4

D5 D6

D7

D8

N

L

C1 C2

C3 C4

C5 C6

C7

C8

Control power

VT1

VT2

VT3

N/C

Control power

VT1

VT2

VT3

N/C

	Phase voltage inputs						Phase voltage inputs
Auto Transfer Control						Auto Transfer Control

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ELECTRICAL INSTALLATION

Type IO_K module connections

CHAPTER 2: INSTALLATION

The IO_K module handles the automatic delayed start of the engine in case there is a total power outage, i.e. Source 1 power fails and the MX350 is not powered by an auxiliary power source. The terminal assignments are as follows:

Terminal	Type	Function		Type
F1	Output	S1	Sol Relay	N.O.
F2	Output	S2	Sol Relay	N.O.
F3	N/A	Common F1, F2		N/A
F4	Output	S1	Del Sol Relay	N.O.
F5	Output	S2	Del Sol Relay	N.O.
F6	N/A	Common F4, F5		N/A
F7	Output	Engine Start Signal (P Relay)		N.O.
F8	N/A	Engine Start Signal, Common		N/A
F9	Output	Engine Start Signal (P Relay)		N.C.
F10	Input	SN Limit Switch		pos.
F11	Input	SE Limit Switch		pos.
F12	Input	SNO Limit Switch		pos.
F13	Input	SEO Limit Switch		pos.
F14	N/A	Input Common		N/A

Figure 14: IO_K module connections - standard ATS

Auto Transfer Control
INPUT COMMON	Inp	~14
	com		0 VDC
SOURCE 2 LIMIT SW	Inp 4	~13
DELAYED INPUT
SOURCE 1 LIMIT SW	Inp 3
DELAYED INPUT		~12
SOURCE 2 LIMIT SW	Inp 2	~11
INPUT
SOURCE 1 LIMIT SW	Inp 1	~10
INPUT
P. RELAY - ENGINE		~9
START - N.C.
P. RELAY - COMMON		~8
P. RELAY - ENGINE		~7
START - N.O.
COIL CONTROL RELAYS SSR 3&4		~6	NC
3 & 4 COMMON
	COM
COIL CONTROL RELAY	SSR	~5
DEL (OPEN SRC 2)			NC
COIL CONTROL RELAY	SSR
DEL (OPEN SRC 1)		~4	NC
COIL CONTROL RELAYS SSR 1&2
1 & 2 COMMON		~3
	COM		0 VDC
COIL CONTROL RELAY	SSR	~2
SOURCE 2
COIL CONTROL RELAY	SSR
SOURCE 1		~1

SOURCE 2 LIMIT SWITCH (+24 V DC ACTIVE)

SOURCE 1 LIMIT SWITCH (+24 V DC ACTIVE)

A

STARTER

CCTRY GEN B

C

24 V DC

TO SOLENOID 24 V DC

TO SOLENOID

889741A1.CDR

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CHAPTER 2: INSTALLATION

Type IO_L module connections

NOTE

ELECTRICAL INSTALLATION

IO_L modules provide all user configurable I/O. Additionally, some of the I/O points on the first L module in slot G are used for some factory configured I/O. The terminal configuration is as follows:

Terminal	Terminal	Terminal	Type	Function
G1	H1	J1	Output	Output 1
G2	H2	J2	Output	Output 2
G3	H3	J3	Output	Output 3
G4	H4	J4	Output	Output 4
G5	H5	J5	Output	Output 5
G6	H6	J6	Common	Common, Ouputs 1 to 5
G7	H7	J7	Input	Input 1
G8	H8	J8	Input	Input 2
G9	H9	J9	Input	Input 3
G10	H10	J10	Input	Input 4
G11	H11	J11	Input	Input 5
G12	H12	J12	Input	Input 6
G13	H13	J13	Input	Input 7
G14	H14	J14	Common	Common, Inputs 1 to 7

Terminals G7 and G8 are always used as DS and Q2, respectively. Depending on the type of switch and the features ordered, Terminals G1 through G5 as well as G9 through G13 may not be available for customer configuration.

Figure 15: IO_L module - standard ATS

Auto Transfer Control
	Inp
USER DEFINED	com ~14			0 VDC
USER DEFINED	Inp 7 ~13
USER DEFINED	Inp 6 ~12
USER DEFINED	Inp 5 ~11

	USER DEFINED	Inp 4	~10	LOAD SHED
				HARDWARE
	LOAD SHED FROM S2	Inp 3 ~9		FOR LOCAL
				OPTION
				24 V DC
	TEST WITH LOAD	Inp 2	~8
				NO
	DISCONNECT SW	Inp 1	~7
				NC
		SSR
	USER DEFINED		~6

COM		0 VDC
SSR5
USER DEFINED	~5
SSR4
USER DEFINED	~4
SSR3
USER DEFINED	~3
SSR2
USER DEFINED	~2
SSR1
LOAD SHED FROM S2	~1	TO BREAKER

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ELECTRICAL INSTALLATION

CHAPTER 2: INSTALLATION

Dielectric strength testing

Figure 16: Testing for dielectric strength

*

*

*

* *

*

*

*

* *

VOLTAGE ADJUST

HV ON

+

–

C + –

R

I

SG

C1 C2

C3 C4

C5 C6 C7

C8

D1 D2 D3 D4 D5 D6 D7

D8

kV

RS485

Thermistor

Core balance

GroundSurge

GroundSurge

GroundSurge

DIELECTRIC STRENGTH TESTER

VT1

VT2

VT3

VT1

VT2

VT3

LINE FAULT

POWER

FAULT

RESET

BLACK

RED

ON

CPU module

VT1 module

VT2 module

		Automatic Transfer Control System
	Do not HI-POT test
	HI-POT test at 1.9 kV AC for 1 second, or
*	1.6 kV AC for 1 minute (per UL 508)
	Remove surge ground during test
	D1	CT1
	D2		CT
	D3	CT2
	D4		Module	Power
	D5
		CT3		supply
	D6
	D7	CT4		L N G
	D8

889738A1.CDR

It may be required to test for dielectric strength (“flash” or “HI-POT”) with the MX350 installed. The MX350 is rated for 1.9 kV AC for 1 second, or 1.6 kV AC for 1 minute (per UL 508) isolation between relay contacts, CT inputs, VT inputs and the surge ground terminal SG. Some precautions are required to prevent damage to the MX350during these tests.

Filter networks and transient protection clamps are used between VT input and the surge ground terminal. This is intended to filter out high voltage transients, radio frequency interference (RFI), and electromagnetic interference (EMI). The filter capacitors and transient suppressors may be damaged by continuous high voltage. Disconnect the surge ground terminals (C8 and D8) during testing of VT inputs. The CT inputs, control power, and output relays do not require any special precautions. Low voltage inputs (less than

30 volts), and RS485 communication ports are not to be tested for dielectric strength under any circumstance (see above).

2–14	MX350 AUTOMATIC TRANSFER CONTROL SYSTEM – INSTRUCTION MANUAL