CHAPTER 1: INTRODUCTION SPECIFICATIONS
MX350 AUTOMATIC TRANSFER CONTROL SYSTEM – INSTRUCTION MANUAL 1–9
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 -20
o
C 16 hrs
Environmental (Dry heat): IEC60068-2-2 85
o
C 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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