Wednesday, July 24, 2019

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 by July 2012.

What is class 1 div 2



This standard applies only to equipment, circuits, and components designed specifically for use in Class I and II, Division 2 and Class III, Divisions 1 and 2 hazardous locations as defined by the National Electrical Code (NEC) ASI/NFPA 70.

Within the ANSI/ISA 12.12.01 standard. There are two types of hazardous conditions are 3 different classes and 2 divisions within each class. For a Class I rating the 2 divisions are Division 1 - normal conditions and Division 2 - abnormal conditions.

The CSA hazardous location certification is C22.2 No. 213-M1987-Non-Incendive Electrical Equipment for Use in Class I Division 2 Hazardous Locations.

What is a hazardous location?

According to the NEC and the Canadian Electrical Code (CEC) a hazardous location is defined as areas "where fire or explosion hazards may exist due to flammable gasses or vapors, flammable liquids, combustible dust, or ignitable fibers or flyings." Specifically, Class I Division 2 refers to only flammable gasses or vapors.

Furthermore, hazardous locations are locations where electrical equipment could be installed and might present a condition which could become explosive if the right elements for an ignition would be present. Hazardous material is expected to be found within closed containers and/or systems and would be present only if an accidental rupture, breakage or an unusual faulty operation would occur, leading the situation to be abnormal, the Division 2 rating.

An example of a normal condition would be where hazardous material would be present during normal plant operations, which coincides with the Division 1 rating.

This hazardous material could ignite through arcs and sparks, high temperature, and electrical
equipment failure.

This means that any product with a Class I Division 2 rating must contain an explosion within, provide a way for the burning gases to escape after the flames are quenched through a flame path.

Tuesday, July 23, 2019

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 Capability

8.    Step 8. Use above parameters to identify a relay (electromechanical or solid state) matching maximum load voltage, maximum surge current, load type, control voltage, type & mounting requirements.

9.    Step 9. Determine the amount of heat to be dissipated & select suitable thermal management solution.





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 external magnetic fields.
•    Subject to mechanical degradation over time (residual magnetism, armature flexing, spring stretching).
•    Potential higher overall cost over equipment life.
•    Can be noisy.

Solid State Relays (SSR) Pros (Advantages)

•    Substantially longer life compared to mechanical relays.
•    Low control power consumption.
•    Faster on/off cycling.
•    Allows very fine proportional output control.
•    No arcing (safer in hazardous environments).
•    No contact bounce.
•    Not orientation sensitive.
•    Switching not affected by shock & vibration.
•    Not affected by external magnetic fields.
•    Less electromechanical interference.
•    Silent operation.
•    Allows many functions in a single package.
•    Potentially lower overall cost over equipment life.


Solid State Relays (SSR) Cons (Disadvantages)

•    Higher initial cost compared to mechanical relays.
•    Generate more heat compared to mechanical relays.
•    Current rating may require derating based on ambient temperature.
•    Voltage or current transients can damage or affect operation.
•    Susceptible to electromagnetic interference (EMI) / radio frequency interference (RFI).
•    Lower off state resistance.
•    Higher on state resistance.
•    Most are single pole/circuit (some available with up to 4).
•    Normally closed/ON function available on a limited basis.
•    Changeover form/circuit not supported.
•    Most typical failure mode is shorted/closed.

Wednesday, May 29, 2019

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.

Dual contactors at the output of the inverter are no longer required. Direct connection to a safety controller ensures compliance to ISO 13849-1 Cat.3 PLd. Safety function: IEC 61800-5-2 “Safe Torque Off (STO)”

The PM motor conforming to highefficiency regulations can be controlled. The PM motor promotes further energy saving and achieves earth-friendly machine control.

The MX2-V1 is a drive and position controller in one, ideal for modular machines where moderate positional accuracy is required. Speed synchronization is also possible, with no additional programming required.

With no external hardware required, and via standard parameter settings, speed synchronisation can be achieved. The MX2-V1 will act as a speed follower to an external pulse generator/encoder signal up to 32 KHz.

Specially developed application functionality enables the MX2-V1 to solve simple positioning tasks without the need for an external controller. Up to 8 positions, plus home, can be selected by the user, and furthermore, the MX2-V1 can be switched between speed and position mode.

The MX2-V1 gives you the power to create smart solutions using PLC functionality, as standard. Via an intuitive flow chart programming tool, you can create programs with up to 1000 lines of code and with 5 tasks running in parallel.

Features:

  • 200% starting torque
    • Near stand-still operation (0.5 Hz)
    • Smooth control of high inertia loads
    • Control of fast cyclic loads
  • Torque control in open loop
    • Ideal for low to medium torque applications
    • Can replace a flux vector or servo drive in suitable systems
  • Motor control
    • Surface Permanent Magnet Motor
    • Interior Permanent Magnet Motor
    • Induction Motor
  • One parameter auto-tuning
    • Just by entering the kW rating of the motor the MX2-V1 gives you smooth and safe operation
  • Safety inside
    • Conforms to safety norm ISO 13849-1 Cat. 3 performance level PLd
    • 2 Safety inputs
    • External device monitoring (EDM)
  • Drive Programming
    • Flow chart programming
    • Text editor
    • Intuitive - up to 5 tasks in parallel
  • Positioning
    • Up to 8 pre-set positions with “Homing”
    • Speed synchronization
  • Network Integration
    • Modbus RS485 built-in
    • Option units for EtherCAT, CompoNet, DeviceNet

Free to program

  • Intuitive and user friendly flow chart programming
  • Integrated in CX-Drive
  • Up to 1000 lines in a program
  • 5 tasks can run in parallel (CX-Drive version 2.80 or higher is required.) 

Tuesday, May 28, 2019

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.
OMRON E2E NEXT Series (DC 3-Wire Models)
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.

World's longest sensing distances, at least twice that of OMRON's previous products. This allows for more spacious design with less risk of contact.

Sensing distance comparisons (Quadruple distance models)

Current proximity sensors characteristically have shorter sensing distances, and this entails many risks. For example, equipment vibration may cause the sensor body to move too far away from or come in contact with the sensing object. Such incidents are said to account for approximately 20% of facility stoppages.

Technologies for stable long-distance detection: Thermal Distance Control 2 and PROX3 hybrid circuitry. Thermal Distance Control 2 enables stable long-distance sensing capabilities by measuring with high precision each sensor's characteristics under multiple temperature conditions, and calculating correction values using OMRON's own polynomial algorithm, which are then written into the sensor's PROX3 hybrid circuitry.

OMRON sensing distance fluctuation due to ambient temperature


The E2E NEXT series proximity sensors (DC 3-wire models) to be newly released are equipped with OMRON's own Thermal Distance Control 2 and PROX3 hybrid circuitry technologies, which enable sensing distances that are at least twice as long as previous models, and thus can reduce risks of such facility stoppages by a factor of 3. Distances between sensor bodies and sensing objects are monitored constantly, and users are notified via IO-Link communication if they become great or too small. This allows users to identify warning signs of sudden facility stoppages, which in turn allows for timely maintenance, all in all enabling stable facility operation without having to rely on the experience or skills of maintenance personnel.

Standardly equipped with IO-Link. This allows you to know in real time, from a single location, the state of multiple sensors, which in turn enables early identification of the site and substance of failures.

Can be used together with connector cables (XS5 NEXT series)
OMRON set forth a concept called "innovative-Automation" consisting of three innovations or "i's"--"integrated" (control evolution), "intelligent" (development of intelligence by ICT), and "interactive" (new harmonization between humans and machines). OMRON's endeavor is to dramatically improve the productivity and quality on the ground in the manufacturing sites. To this end, OMRON will continue to expand its lineup of IoT-enabled control devices, and, with the help of its clients, expedite the "intelligent" element (i.e. making manufacturing smarter) in manufacturing sites, which is key to delivering on the "innovative-Automation" concept.

Broad model lineup. OMRON offers a lineup of 2,512 models that come in a variety of physical sizes and with different sensing distances to cater to different needs. OMRON E2E NEXT series sensors come in M8, M12, M18 & M30 sizes.

OMRON E2E NEXT series model lineup
Recently, OMRON has developed a manufacturing innovation concept, called "innovative-Automation" With this concept, OMRON is currently committed to bringing innovation to manufacturing sites through three key innovations, or three "i's." Through these innovations in the area of automation, OMRON aims to enable significant productivity improvements in manufacturing sites in order to achieve high-value-added manufacturing. With the first "i," "integrated" (control evolution), OMRON will seek to advance automated control technology so that virtually any operator, even inexperienced operators, can effortlessly perform work that previously required the expert skills of experienced workers. With the second "i," "intelligent" (development of intelligence by ICT), OMRON seeks to create constantly evolving equipment and production lines. By adopting a wide range of control devices and artificial intelligence (AI), machines can learn through experience and maintain themselves in optimal condition. For the third "i," "interactive" (new harmonization between humans and machines), OMRON pursues the development of a new harmonious relationship between human operators and machines. Working together in the same workspace, machines will be able to assist human operators by recognizing human thoughts and behavior.

Sensing distances

Type
Sensing distance (compared with previous OMRON products
(3-wire models))
Quadruple distance models*
Previous products (3-wire models) x 4
Triple distance models*
Previous products (3-wire models) x 3
Double distance models
Previous products (3-wire models) x 2
Single distance models
Previous products (3-wire models) x 1

*Can be used together with e-jigs, which help reduce sensor maintenance/replacement time.

Saturday, March 16, 2019

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 functionality
  • Dual Ethernet ports
  • High performance in an ultra-compact body
  • Available 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 program and data capacity. FP0H / FPΣ / FP0R units can be added for a total of 384 I/O points.
  • Data logging and trace functions for data collection. Programs can be updated and saved without a PC.

Markets:
  • Automotive Manufacturing
  • Food & Beverage Manufacturing
  • Packaging
  • Semiconductor Manufacturing