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What is Class I Division 2?

A Class I Division 2 is a location: (1) In which volatile flammable gases, flammable liquid-produced vapors, or combustible liquid-produced vapors are handled, processed, or used, but in which the liquids, vapors, or gases will normally be confined within closed containers or closed systems from which they can escape only in case of accidental rupture or breakdown of such containers or systems or in case of abnormal operation of equipment, or (2) In which ignitable concentrations of flammable gases, flammable liquid-produced vapors, or combustible liquid-produced vapors are normally prevented by positive mechanical ventilation, and which might become hazardous through failure or abnormal operation of the ventilating equipment.

Class I Division 2 Classification

Class I Division 2 refers to the ANSI/ISA 12.12.01 standard. This standard was previously UL1604 until UL recommended the newer ANSI/ISA standard be used and that all hazardous location products be certified under this standard b…

Steps to Selecting a Relay

Follow the steps below to select the correct electromechanical (EMRs) or solid state relay (SSRs) for your applications.

1.    Step 1. Identify mounting type:

a.    Panel
b.    DIN Rail
c.    Plug-in
d.    PCB

2.    Step 2. Identify Required Load Voltage Rating & Type:

a.    AC or DC
b.    Determine maximum voltage to be switched






3.    Step 3. Identify Required Load Current Rating:

a.    Calculate Average Load current
b.    Calculate Surge (inrush) current

4.    Step 4. Identify required circuit/switching arrangement:

a.    Number of poles/circuits to be switched
b.    Normally Open, Normally Closed or
c.    Changover switching function

5.    Step 5. Identify Required Control Voltage & Type:

a.    AC or DC
b.    Control Voltage Range

6.    Step 6. Identify Load Type:

a.    Inductive (Random Turn-on SSR)
b.    Resistive (Zero Crossing SSR)

7.    Step 7. Identify Type of SSR Required:

a.    Standard
b.    Special Application:

i.    Phase Angle Control
ii.    Burst Fire Control
iii.    Soft/Start Capabili…

Electromechanical Relays (EMRs) vs. Solid State Relays Comparison (SSRs)

Electromechanical Relays (EMR) Pros (Advantages)

•    Lower initial cost compared to solid state relays.
•    Provides complete electrical isolation.
•    Tolerates high current & voltage transients.
•    Insensitive to electromagnetic interference (EMI) / radio frequency interference (RFI).
•    Higher open resistance (air gap).
•    Lower closed resistance.
•    Available with many poles/circuits (up to 8 or more).
•    Many different circuit configurations available.
•    Multiple packaging & feature options.
•    Most typical failure mode is open.


Electromechanical Relays (EMR) Cons (Disadvantages)

•    Higher control (coil) power consumption.
•    Contact arcing can cause pitting & eventual open/short failure.
•    Contacts can be affected by corrosion, oxidation or contamination.
•    Contact bounce possible due to shock & vibration.
•    Generates electromagnetic interference (EMI) / radio frequency interference (RFI).
•    Can be orientation sensitive.
•    Can be affected by e…

Harmonized motor and machine control

High starting torque and torque control capability in open loop mode give you full control of your machine dynamics and performance. Options for all of the major open network systems.

The MX2-V1 delivers 200% starting torque near stand-still (0.5 Hz) and can operate in torque control in open loop mode. This allows the MX2-V1 to be used in applications where closed loop AC vector drives were previously used.

Standard industrial networks, such as EtherCAT, CompoNet or DeviceNet as options. High-speed EtherCAT provides solutions for the entire system from input to output with Sysmac Series.

Built-in RS-485 Modbus communications. OMRON Function Blocks are available for the CP H/L and CJ-series PLCs. Those control the MX2-V1 via Modbus communications easily.

Safety is embedded in the MX2-V1, according to ISO 13849-1, Cat. 3, with two safety inputs and an External Device Monitoring (EDM) output. No external contactors on the motor side are required, meaning simpler wiring for the user.

Dua…

OMRON to Release 2,512 Models of Its E2E NEXT Series Proximity Sensors, Now Equipped with IoT Features

OMRON Corporation will globally launch in January 2019 a total of 2,512 models of its DC 3-wire E2E NEXT series proximity sensors, which boast the world's longest sensing distances and are now newly equipped with IoT features. These sensors reduce risks of sudden facility stoppages by a factor of 3; they also detect signs that warn of such stoppages and notify users via the network. They help improve facility operation rates by preventing unforeseen facility stoppages and reducing facility downtime.
At actual manufacturing sites, unforeseen facility stoppages are a major management issue, for they directly lead to lost production opportunities. To minimize facility downtime, manufacturers must procure on-site maintenance personnel who can readily address unforeseen facility stoppages. With labor shortages becoming increasingly severe, however, demand is growing for ways to utilize IoT to maintain and improve facility operation rates without relying on human experience or skills.

Wo…

FP0H Series Programmable Logic Controllers (PLC)

Panasonic Introduces The New FP0H Series of Ultra-Compact Programmable Logic Controllers!


Panasonic, a worldwide leader in Industrial Automation Products, announces the NEW FP0H Series of ultra-compact programmable controllers. The FP0H is an ultra-compact, high-performance PLC offering extensive features such as dual Ethernet ports, support for multiple protocols, FTP client/server functionality, and SD card slot for data logging/program transfer.

Features:
FTP Server & Client functionalityDual Ethernet portsHigh performance in an ultra-compact bodyAvailable SD card slot
Benefits:
FTP server functionality allows the PC to read the logging data in the FP0H's SD memory card and to write setting values and other parameters. FTP client functions allows the FP0H to generate and write data to, and read files to an FTP server.Provides Ethernet/IP, Modbus TCP, and MC protocols.Only 10ns per basic instruction (up to 10k steps), 8x faster than conventional models. Up to 64k steps of progra…