GE Industrial Solutions MX350 User Manual
Title page
IISO9001:2000
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GE Digital Energy
Multilin
MX350
Automatic Transfer Control
System
Low voltage power transfer control
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: 800-637-1738
email: GEPQSales@ge.com
Internet: http://www.gedigitalenergy.com/ats
*1601-9071-A2*
Instruction manual
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
NOTE
CAUTION
DANGER
Multilin
MX350 Automatic Transfer Control
System
Chapter 1: Introduction
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
MX350 AUTOMATIC TRANSFER CONTROL SYSTEM – INSTRUCTION MANUAL 1–1
OVERVIEW CHAPTER 1: INTRODUCTION
Graphical display
• Large metering values
• Wide viewing angle
Soft key navigation
• Graphical module control
Front port access
• USB for laptop connection
Integrated functionality
• Metering, control
• Event recorder
LED indication
• Time delay indication
• Alarm indication
• Transfer inhibit indication
• Source available & connected
indication
Ease of use
• Graphical interface
• Self-description
Mounting options
•DIN Rail
• Through door
889723A1.CDR
Front panel control
• Integrated device control
• Dedicated control keys
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
1–2 MX350 AUTOMATIC TRANSFER CONTROL SYSTEM – INSTRUCTION MANUAL
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
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
GEN
X1
H1
H1
X1
METERING
V, A, W, VAR, VA, PF, HZ
TO LOAD
UTA
UTILITY
(SOURCE-1)
VOLTAGE
CARD
SOURCE
2
POWER
SUPPLY
1
SOURCE
CARD
VOLTAGE
METERING
NEUTRAL
CT CARD
ATS
CONTROLLER
170VDC
RS485 - MODBUS RTU
ETHERNET - MODBUS TCP/IP
NOTE:1
K
CARD
P
ENGINE START CONTACT
I/O
CARD
24VDC
TO K CARD
AND
I/O CARD
SUPPLIED BY OTHERS
(3)
CT'S
(1)
CT
NOTE:1
TO
SOURCE-2
NOTE:1- FOURTH POLE/NEUTRAL POLE IS AN OPTIONAL FEATURE.
NOTE:1
NOTE:1
27 59 47
25
475927
46
51R
50G 51G
889739A1.CDR
Figure 3: Single line diagram
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
NOTE
Specifications
NOTE:
Specifications are subject to change without notice.
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
( [I
- IAV] / IAV ) x 100%
M
Where:
I
= average phase current
AV
I
= current in a phase with maximum deviation from I
M
AV
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
NOTE
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
NOTE:
Phase current Input Type of 1 A is not supported.
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
Radiated & Conducted Emissions: CISPR11 /CISPR22/ IEC60255-25 Class A
Ingress Protection: IEC60529 IP20 (base unit) IP54 (Control
Environmental (Cold): IEC60068-2-1 -20
Environmental (Dry heat): IEC60068-2-2 85
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
interrupts
Panel)
o
C 16 hrs
o
C 16hrs
MX350 AUTOMATIC TRANSFER CONTROL SYSTEM – INSTRUCTION MANUAL 1–9
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
quality program
Physical specifications
DIMENSIONS
Size: ........................................................................... Base: 62 mm [2.44"] (W) × 90 mm [3.54"] (H) × 113 mm [4.45"]
Weight (Base):....................................................... 0.75 kg [1.65 lb]
Environmental specifications
ENVIRONMENTAL SPECIFICATIONS
Ambient temperatures:
Storage/shipping: - 40
Operating: -20
* 1" around Base Unit
ISO9001
(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)
o
C to 90oC *
o
C to 60oC * (Base Unit and Basic Control Panel)
o
-20
C to 50oC * (Graphical Control Panel)
o
Humidity: Operating up to 95% (non condensing) @ 55
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
C (As
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
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
2.425”
(61.6 mm)
0.525”
(13.3 mm)
889748A1.CDR
Model:
Serial Number:
Firmware:
Mfg. Date:
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
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
CAUTION
#4 - 40x3/8in SELF-TAP PAN HD PHILIPS
QTY: 6 (SUPPLIED); GE PART NO. 1402-0017
TIGHTENING TORQUE: 8 lb-in
REAR OF PANEL
CUTOUT AND
MOUNTING HOLES
INSTALL RELAY
FROM FRONT
OF THE PANEL
3.775”
(95,89 mm)
5.580”
(141,73 mm)
0.105”
(2,67 mm)
0.138”
(3,49 mm)
3.500”
(88,90 mm)
0.130”
(3,30 mm)
(QTY: 6)
5.790”
(147,07 mm)
1.750”
(44,45 mm)
889725A1.CDR
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
Figure 3: Panel mounting and cutout dimensions
CAUTION:
The DIN rail mounting is illustrated below. The DIN rail conforms to EN 50022.
To avoid the potential for personal injury due to f ire hazards, ensure the unit is
mounted in a safe location and/or within an appropriate enclosure.
Figure 4: DIN rail mounting
The screw mount for high vibration environments is illustrated below.
MX350 AUTOMATIC TRANSFER CONTROL SYSTEM – INSTRUCTION MANUAL 2–3
MECHANICAL INSTALLATION CHAPTER 2: INSTALLATION
DANGER
CAUTION
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
Figure 5: Screw mounting
DANGER:
CAUTION:
Module withdrawal and insertion
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
889733A1.CDR
889734A1.CDR
Figure 6: Removing a module from the MX350
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
MX350 AUTOMATIC TRANSFER CONTROL SYSTEM – INSTRUCTION MANUAL 2–5
MECHANICAL INSTALLATION CHAPTER 2: INSTALLATION
NOTE
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
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”.
NOTE:
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
CAUTION
Expansion module
Expansion module
to base unit with a
single connector
CT Input
Three-phase plus
ground/neutral
VT inputs
Optional TCP/IP
Ethernet
RS485 communications
Switched power supply
allows AC or DC control
voltage
889740A2.CDR
K Card
Expansion module
to base/expansion unit
with a single connector
LCard LCard
Expansion module
Reserved
Reserved
Electrical installation
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
CAUTION:
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
CIO_B module
DIO_B module
E IO_A module (optional)
FIO_K module
GIO_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.
The MX350 is not to be used in any way other than described in this manual.
MX350 AUTOMATIC TRANSFER CONTROL SYSTEM – INSTRUCTION MANUAL 2–7
ELECTRICAL INSTALLATION CHAPTER 2: INSTALLATION
CAUTION
PSU
60-300 VAC
84-250 VDC
L
LISTED
IND.CONT.EQ.
52TL
E200434
N
8
7
6
5
4
3
2
1
MS
NS
THERM RS485
V-
10/100
ETHERNET
GROUND
CT I/P
I
L
C
H
V+
+
–
C
+
–
FIELD BUS
8
7
6
5
4
3
2
1
ABCDEFGH
Slot position
Base unit Expansion modules
889749A1.CDR
14
13
12
11
10
9
8
7
6
5
4
3
2
1
14
13
12
11
10
9
8
7
6
5
4
3
2
1
14
13
12
11
10
9
8
7
6
5
4
3
2
1
8
7
6
5
4
3
2
1
R
SG
14
13
12
11
10
9
8
7
6
5
4
3
2
1
I
Figure 9: Typical module arrangement
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
CAUTION:
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.
2–8 MX350 AUTOMATIC TRANSFER CONTROL SYSTEM – INSTRUCTION MANUAL
CHAPTER 2: INSTALLATION ELECTRICAL INSTALLATION
CAUTION
SCADA, PLC, OR
PERSONAL COMPUTER
COM
OPTOCOUPLER
DATA
IED
SHIELD
889745A1.CDR
UP TO 32 IEDs,
MAXIMUM CABLE
LENGTH OF
1200 m (4000 ft .)
LAST
DEVICE
(*) TERMINATING IMPEDANCE AT E ACH END
(typically 120 ohms and 1 nF)
TWISTED PAIR
ZT(*)
RS485 +
RS485 -
COMMON
RS485 +
RS485 -
COMMON
IED
RS485 +
IED
RS485 -
COMMON
GROUND THE SHIELD AT THE
SCADA/PLC/COMPUTER ONLY
OR THE UNIT ONLY
DATA
OPTOCOUPLER
B1
B2
B3
ZT(*)
CPU module
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.
RS485 connections Figure 10: Typical RS485 connection
CAUTION:
MX350 AUTOMATIC TRANSFER CONTROL SYSTEM – INSTRUCTION MANUAL 2–9
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.
ELECTRICAL INSTALLATION CHAPTER 2: INSTALLATION
CAUTION
A
C
B
Power flow
–
+
E1
E2
E4E3
Phase current inputs
Automatic Transfer Control System
To switchgear
ground bus
889744A1.CDR
E5
E6 E7
CT1 CT2 CT3
Control power
LN
E8
G/F
N
Input/Output modules
Phase current inputs
(IO_A module)
CAUTION:
Figure 11: Typical phase current input connections
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).
2–10 MX350 AUTOMATIC TRANSFER CONTROL SYSTEM – INSTRUCTION MANUAL
CHAPTER 2: INSTALLATION ELECTRICAL INSTALLATION
A
C
B
–
+
D1
D2 D4D3
Phase voltage inputs
Auto Transfer Control
D5
D6 D7
VT1 VT2 VT3
Control power
LN
D8
N/C
–
+
C1
C2 C4C3
Phase voltage inputs
Auto Transfer Control
889735A1.CDR
C5
C6 C7
VT1 VT2 VT3
Control power
LN
C8
N/C
N
Typically
generator
Typically
utility
LOAD
A
C
B
–
+
D1
D2 D4D3
Phase voltage inputs
Auto Transfer Control
D5
D6
VT1 VT2 VT3
Control power
LN
D7 D8
N/C
–
+
C1
C2 C4C3
Phase voltage inputs
Auto Transfer Control
889736A1.CDR
C5
C6
VT1 VT2 VT3
Control power
LN
C7 C8
N/C
From
Source 2
(generator)
From
Source 1
(utility)
LOAD
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
Figure 13: Delta voltage connection
MX350 AUTOMATIC TRANSFER CONTROL SYSTEM – INSTRUCTION MANUAL 2–11
ELECTRICAL INSTALLATION CHAPTER 2: INSTALLATION
~1
~2
~4
~3
~5
~6
Auto Transfer Control
~8
~9
~11
~10
~12
~13
~7
~14
INPUT COMMON
Inp
com
SOURCE 2 LIMIT SW
DELAYED INPUT
Inp 4
Inp 3
Inp 2
Inp 1
SOURCE 1 LIMIT SW
DELAYED INPUT
SOURCE 2 LIMIT SW
INPUT
SOURCE 1 LIMIT SW
INPUT
P. RELAY - ENGINE
START - N.C.
P. RELAY - COMMON
P. RELAY - ENGINE
START - N.O.
COIL CONTROL REL AYS
3&4COMMON
COIL CONTROL REL AY
DEL (OPEN SRC 2)
COIL CONTROL REL AY
DEL (OPEN SRC 1)
COIL CONTROL REL AYS
1&2COMMON
COIL CONTROL REL AY
SOURCE 2
COIL CONTROL REL AY
SOURCE 1
SSR 3&4
COM
SSR 1&2
COM
SSR
SSR
SSR
SSR
SOURCE 2 LIMIT SWITCH (+24 V DC ACTIVE)
SOURCE 1 LIMIT SWITCH (+24 V DC ACTIVE)
NC
NC
NC
24VDC
24VDC
TO SOLENOID
TO SOLENOID
~1
~2
~4
~3
889741A1.CDR
~5
~6
Auto Transfer Control
~8
~9
~11
~10
~12
~13
~7
~14
INPUT COMMON
Inp
com
SOURCE 2 LIMIT SW
DELAYED INPUT
Inp 4
Inp 3
Inp 2
Inp 1
SOURCE 1 LIMIT SW
DELAYED INPUT
SOURCE 2 LIMIT SW
INPUT
SOURCE 1 LIMIT SW
INPUT
P. RELAY - ENGINE
START - N.C.
P. RELAY - COMMON
P. RELAY - ENGINE
START - N.O.
COIL CONTROL REL AYS
3&4COMMON
COIL CONTROL REL AY
DEL (OPEN SRC 2)
COIL CONTROL REL AY
DEL (OPEN SRC 1)
COIL CONTROL REL AYS
1&2COMMON
COIL CONTROL REL AY
SOURCE 2
COIL CONTROL REL AY
SOURCE 1
SSR 3&4
SSR 1&2
SOURCE 2 LIMIT SWITCH (+24 V DC ACTIVE)
SOURCE 1 LIMIT SWITCH (+24 V DC ACTIVE)
NC
NC
NC
0 VDC
0 VDC
24VDC
24VDC
TO SOLENOID
TO SOLENOID
STARTER
CCTRY
GEN
A
B
C
Type IO_K module
connections
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
2–12 MX350 AUTOMATIC TRANSFER CONTROL SYSTEM – INSTRUCTION MANUAL
CHAPTER 2: INSTALLATION ELECTRICAL INSTALLATION
NOTE
~1
~2
~4
~3
~5
~6
Auto Transfer Control
~8
~9
~11
~10
~12
~13
~7
~14
Inp
com
Inp 7
Inp 6
Inp 5
Inp 4
LOAD SHED FROM S2
TEST WITH LOAD
DISCONNECT SW
LOAD SHED FROM S2
SSR
COM
SSR3
SSR5
SSR4
SSR2
SSR1
NO
~1
~2
~4
~3
889742A1.CDR
~5
~6
Auto Transfer Control
~8
~9
~11
~10
~12
~13
~7
~14
Inp
com
In
SSR
SSR
NC
Inp 3
Inp 2
Inp 1
LOAD SHED
HARDWARE
FOR LOCAL
OPTION
TO BREAKER
24VDC
0 VDC
0 VDC
USER DEFINED
USER DEFINED
USER DEFINED
USER DEFINED
USER DEFINED
USER DEFINED
USER DEFINED
USER DEFINED
USER DEFINED
USER DEFINED
Type IO_L module
connections
NOTE:
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
MX350 AUTOMATIC TRANSFER CONTROL SYSTEM – INSTRUCTION MANUAL 2–13
ELECTRICAL INSTALLATION CHAPTER 2: INSTALLATION
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)
LINE FAULT
ON
POWER
FAULT
RESET
kV
VOLTAGEADJUST
HV ON
DIELECTRIC STRENGTHTESTER
BLACK RED
Remove surge ground during test
*
CPU module
C8
C7
C6
C5
C4
C3
C2
C1
Surge Ground
D1
D2
D3
D4
D5
D6
D7
D8
CT Module
CT1
CT2
CT3
CT4
Power
supply
L
N
G
Automatic Transfer Control System
VT1 module
VT1
VT3
RS485
Thermistor
VT2
Core
balance
Surge Ground
889738A1.CDR
+
–
C
+
–
R
ISG
*
*
*
*
*
D8
D7
D6
D4
D3
D2
D1
Surge Ground
D5
VT1
VT3
VT2
VT2 module
*
*
*
*
*
Dielectric strength testing
Figure 16: Testing for dielectric strength
2–14 MX350 AUTOMATIC TRANSFER CONTROL SYSTEM – INSTRUCTION MANUAL
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).
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