Drivers Schweitzer Engineering Labratories Port Devices

Schweitzer Engineering Laboratories Careers
Drivers Schweitzer Engineering Laboratories Port Devices Inc
Schweitzer Engineering Laboratories Hr
Schweitzer Engineering Laboratories Stock

News4 days ago byStephanie Leonida

-JLpJEJ Edit Commun z.; ons Leg '.' Indcv, S Settings Editor - New Settings 1 (SEL-2411 002 Settings Driver) Global Settings Device Settings. Analog Settings O Internal FITD Settings External FlTD Settings + O Front Panel Settings SDHP Maps Programmable Automation Controller L-2411002 Settings Driver Driver Version: 4.1.15.18 Date: 5/17.

Schweitzer Engineering Laboratories released its SEL-3350 compact controller and its Time-Domain Link technology solution.

The OPC Server for Schweitzer Engineering Laboratories SEL-2431 Voltage Regulator Control is OPC Certified! OPC Certification is the process of ensuring that applications meet the standards specified by the OPC Foundation. OPC Certification requires extensive testing to ensure true interoperability.
This server has been tested with hardware from vendors such as ABB, Control Microsystems, GE Power Systems, Schweitzer Engineering Laboratories and others. If security and reliability are important for your Control System, then OPC Server for DNP3 is what you need.
Page 2 Schweitzer Engineering Laboratories, Inc. Reserves all rights and benefits afforded under federal and international copyright and patent laws in its products, including without limitation software, firmware, and documentation. The information in this manual is provided for informational use only and is subject to change without notice.
This driver enables USB communication between Windows computers and SEL USB ports for the following devices: SEL-311C; SEL-351; SEL-351A; SEL-351RS Kestrel; SEL-351S; SEL-651R; SEL-651RA; SEL-T400L; SEL-T401L; Installation Instructions. Download zip directory and extract files. Open and follow installation instructions.

Schweitzer Engineering Laboratories, Inc. (SEL) is a global supplier of electrical protection products and solutions. The company creates digital products designed to protect, control, monitor, and automate power systems. Founded by Dr. Edmon O. Schweitzer III, the company was incorporated in 1982.

Schweitzer Engineering is headquartered in Pullman, Washington, USA. The company has over 100 offices and more than 5,000 employees worldwide. In early January, Schweitzer released its new SEL-3350 Automation Controller and optimized its Time-Domain Link (TiDL) technology solution.

Schweitzer Engineering Laboratories Careers

The SEL-3350 Automation Controller

The SEL-3350 was designed to be compact, flexible, and low-cost. It can be used for dedicated embedded applications requiring mid-level I/O and computation. The device has a 1U form factor, so it can be used when there is limited space.

The controller can be ordered and configured to suit various computer operating systems, including Microsoft Windows 10 internet of things (IoT) Enterprise, Windows Server, and Linux drivers for Ubuntu, CentOS, and Red Hat.

The option to choose between a real-time automation controller (RTAC) and Blueframe operating system will become available to users in 2021’s first quarter. Intelligent electronics device (IED) settings can be viewed and changed, as can report and event data.

Additionally, not only can diagram drawings and documents be accessed onsite, but the SEL-3350 can also be accessed securely from a remote location through a Microsoft Windows Remote Desktop, a virtual private network (VPN), or Secure Shell (SSH).

The SEL-3350 Automation Controller. Image used courtesy of SEL.

The device features a passive thermal management system and a wide temperature range, meaning the SEL-3350 controller can withstand harsh environments where off-the-shelf computers would fail to function. An error-correcting code (ECC) memory and single-level cell (SLC) solid-state drives (SSDs) have been incorporated into the SEL-3350 to help provide reliable operation in such harsh environments.

For greater protection, a conformal coating can be bought with this device to protect against extreme conditions and airborne contaminants (e.g., hydrogen sulfide, chlorine, salt, and moisture).

The SEL-3350 also meets several standards, including Institute of Electrical and Electronics Engineers (IEEE) 1613, IEEE C37.90, International Electrotechnical Commission (IEC) 61850-3, IEC 60255 protective relay standards, plus IEC 61000-6-2 and IEC 61000-6-4 industrial environment standards.

SEL’s New Merging Unit

Schweitzer released the new SEL-TiDL Merging Unit (TMU) alongside the SEL-3350 Controller in January. This unit combines data sharing, cybersecurity, and protection in one point-to-point digital secondary system. The solution improves safety by taking away high-energy cables from the control house.

The SEL-TMU only needs a single direct fiber connection to a TiDL relay in a control house. No switches or routers are required.

The SEL-TMU remote acquisition device is designed to be used in an SEL-TiDL technology system. Image used courtesy of SEL.

The merging unit can digitize analog signals into direct fiber communications. Power system data along with embedded time synchronization can be transported over a fiber-optic cable to an SEL-400 series TiDL relay in the control house. With the ability to transmit data to four TiDL relays, a protection system with a customized topology can be designed.

The stream of data from the SEL-TMU is automatically and independently synchronized to each connected relay, which removes the need for an external time source. The TiDL has an isolated network architecture providing customers with deterministic communications and a more cyber-secure system.

Both the SEL-3350 and SEL-TMU can be utilized for more efficient, safe, and secure monitoring, information, and data exchange within control and power systems.

Learn More About:

Generic Reference Driver

Last update: 27-Jan-2014 05:31 UTC

Synopsis

Address: 127.127.8.u
Reference ID: PARSE
Driver ID: GENERIC
Serial Port: /dev/refclock-u; TTY mode according to clock type
PPS device: /dev/refclockpps-u; alternate PPS device (if not available via the serial port)

Description

The PARSE driver supports 20 different clock types/configurations. PARSE is actually a multi-clock driver.

The actual receiver status is mapped into various synchronization states generally used by receivers. The driver is configured to interpret the time codes of Meinberg DCF77 AM receivers, DCF77 FM receivers, Meinberg GPS16x/17x receivers, Trimble SV6 GPS, ELV DCF7000, Schmid, Wharton 400A and low cost receivers (see list below).

The reference clock support in NTP contains the necessary configuration tables for those receivers. In addition to supporting several different clock types and up to 4 devices, the processing of a PPS signal is also provided as a configuration option. The PPS configuration option uses the receiver-generated time stamps for feeding the PPS loopfilter control for much finer clock synchronization.

CAUTION: The PPS configuration option is different from the hardware PPS signal, which is also supported (see below), as it controls the way ntpd is synchronized to the reference clock, while the hardware PPS signal controls the way time offsets are determined.

The use of the PPS option requires receivers with an accuracy of better than 1ms.

Timecode variables listed by ntpq (8)

The ntpq program can read and display several clock variables. These hold the following information:

Drivers Schweitzer Engineering Laboratories Port Devices Inc

refclock_format: A qualification of the decoded time code format.
refclock_states: The overall running time and the accumulated times for the clock event states.
refclock_status: Lists the currently active receiver flags. Additional feature flags for the receiver are optionally listed in parentheses.
refclock_time: The local time with the offset to UTC (format HHMM).
timecode: The actual time code.

If PPS information is present, additional variables are available:

refclock_ppsskew: The difference between the RS-232-derived timestamp and the PPS timestamp.
refclock_ppstime: The PPS timestamp.

Supported Devices

Currently, twenty-four clock types are supported by the PARSE driver and up to four (devices /dev/refclock-0 - /dev/refclock-3) of these clocks may be operational at any one time.
A note on the implementations:

These implementations were mainly done without actual access to the hardware, thus not all implementations provide full support. The development was done with the help of many kind souls who had the hardware and kindly lent me their time and patience during the development and debugging cycle. Thus for continued support and quality, direct access to the receivers is a big help. Nevertheless I am not prepared to buy these reference clocks - donations to (kardel <AT> ntp.org) are welcome as long as they work within Europe 8-).
Verified implementations are:
- RAWDCF variants
  These variants have been tested for correct decoding with my own homegrown receivers. Interfacing with specific commercial products may involve some fiddling with cables. In particular, commercial RAWDCF receivers have a seemingly unlimited number of ways to draw power from the RS-232 port and to encode the DCF77 datastream. You are mainly on your own here unless I have a sample of the receiver.
- Meinberg clocks
  These implementations have been verified by the Meinberg people themselves and I have access to one of these clocks.
- Schweitzer Engineering Laboratories SEL-240x clocks
  This implementation was provided and verified by SEL and Network Time Foundation has an SEL-2407 in one of its development labs.

Schweitzer engineering laboratories charlotte

The pictures below have been taken from and are linked to the vendors' web pages.

server 127.127.8.0-3 mode 0
MeinbergPZF5xx receiver family (FM demodulation/TCXO / 50μs)
server 127.127.8.0-3 mode 1
MeinbergPZF5xx receiver family (FM demodulation/OCXO / 50μs)
server 127.127.8.0-3 mode 2
MeinbergDCF C51 receiver and similar (AM demodulation / 4ms)
This mode expects the Meinberg standard time string format with 9600/7E2.
Note: mode 2 must also be used for Meinberg PCI cards under Linux, e.g. the GPS PCI card or the DCF77 PCI card. Please note the Meinberg Linux driver must be installed. That driver emulates a refclock device in order to allow ntpd to access those cards. For details, please refer to the README file that comes with the Meinberg driver package.
server 127.127.8.0-3 mode 3
ELV DCF7000 (sloppy AM demodulation / 50ms)
server 127.127.8.0-3 mode 4
Walter Schmid DCF receiver Kit (AM demodulation / 1ms)
server 127.127.8.0-3 mode 5
RAW DCF77 100/200ms pulses (Conrad DCF77 receiver module / 5ms)
server 127.127.8.0-3 mode 6
RAW DCF77 100/200ms pulses (TimeBrick DCF77 receiver module / 5ms)
server 127.127.8.0-3 mode 7
MeinbergGPS16x/GPS17x receivers (GPS / <<1μs)
This mode expects either the University of Erlangen time string format or the Meinberg standard time string format at 19200/8N1.
The University of Erlangen format is preferred. Newer Meinberg GPS receivers can be configured to transmit that format; for older devices, a special firmware version may be available.
In this mode some additional GPS receiver status information is also read. However, this requires a point-to-point connection. Mode 18 should be used if the device is accessed by a multidrop connection.
Note: mode 7 must not be used with Meinberg PCI cards; use mode 2 instead.
server 127.127.8.0-3 mode 8
server 127.127.8.0-3 mode 9
TrimbleSVeeSix GPS receiver TAIP protocol (GPS / <<1μs)
server 127.127.8.0-3 mode 10
TrimbleSVeeSix GPS receiver TSIP protocol (GPS / <<1μs) (no kernel support yet)
server 127.127.8.0-3 mode 11
Radiocode Clocks Ltd RCC 8000 Intelligent Off-Air Master Clock support
server 127.127.8.0-3 mode 12
server 127.127.8.0-3 mode 13
Diem's Computime Radio Clock
server 127.127.8.0-3 mode 14
RAWDCF receiver (DTR=high/RTS=low)
server 127.127.8.0-3 mode 15
WHARTON 400A Series Clocks with a 404.2 Serial Interface
server 127.127.8.0-3 mode 16
RAWDCF receiver (DTR=low/RTS=high)
server 127.127.8.0-3 mode 17
VARITEXT Receiver (MSF)
server 127.127.8.0-3 mode 18
Meinberg GPS16x/GPS17x receivers (GPS / <<1μs)
This mode works without additional data communication (version, GPS status etc.) and thus should be used with multidrop, heterogeneous multiclient operation.
Note: mode 18 must not be used with Meinberg PCI cards, use mode 2 instead.
server 127.127.8.0-3 mode 19
Gude Analog- und Digitalsystem GmbH 'Expert mouseCLOCK USB v2.0'
server 127.127.8.0-3 mode 20
RAWDCF receiver similar to mode 14, but operating @ 75 baud (DTR=high/RTS=low)
Driving the DCF clocks at 75 baud may help to get them to work with a bunch of common USB serial converters, that do 75 but cannot do 50 baud at all, e.g. those based on Prolific PL2303.
server 127.127.8.0-3 mode 21
RAWDCF receiver similar to mode 16, but operating @ 75 baud (DTR=low/RTS=high)
See comment from mode 20 clock.
server 127.127.8.0-3 mode 22
MEINBERG, mode 2 but with POWERUP trust
server 127.127.8.0-3 mode 23
MEINBERG, mode 7 but with POWERUP trust
server 127.127.8.0-3 mode 24
Schweitzer Engineering Laboratories

Actual data formats and setup requirements of the various clocks can be found in NTP PARSE clock data formats.

Operation

The reference clock support software carefully monitors the state transitions of the receiver. All state changes and exceptional events (such as loss of time code transmission) are logged via the syslog facility. Every hour a summary of the accumulated times for the clock states is listed via syslog.

PPS support is only available when the receiver is completely synchronized. The receiver is believed to deliver correct time for an additional period of time after losing synchronization, unless a disruption in time code transmission is detected (possible power loss). The trust period is dependent on the receiver oscillator and thus is a function of clock type.

Raw DCF77 pulses can be fed via a level converter to the RXD pin of an RS-232 serial port (pin 3 of a 25-pin connector or pin 2 of a 9-pin connector). The telegrams are decoded and used for synchronization. DCF77 AM receivers can be bought for as little as $25. The accuracy is dependent on the receiver and is somewhere between 2ms (expensive) and 10ms (cheap). Synchronization ceases when reception of the DCF77 signal deteriorates, since no backup oscillator is available as usually found in other reference clock receivers. So it is important to have a good place for the DCF77 antenna. During transmitter shutdowns you are out of luck unless you have other NTP servers with alternate time sources available.

In addition to the PPS loopfilter control, a true PPS hardware signal can be utilized via the PPSAPI interface. PPS pulses are usually fed via a level converter to the DCD pin of an RS-232 serial port (pin 8 of a 25-pin connector or pin 1 of a 9-pin connector). To select PPS support, the mode parameter is the mode value as above plus 128. If 128 is not added to the mode value, PPS will be detected to be available but will not be used.

Hardware PPS support

For PPS to be used, add 128 to the mode parameter.

If the PPS signal is fed in from a device different from the device providing the serial communication (/dev/refclock-{0..3}), this device is configured as /dev/refclockpps-{0..3}. This allows the PPS information to be fed in e.g. via the parallel port (if supported by the underlying operation system) and the date/time telegrams to be handled via the serial port.

Monitor Data

Clock state statistics are written hourly to the syslog service. Online information can be found by examining the clock variables via the ntpq cv command.
Some devices have quite extensive additional information (GPS16x/GPS17x, Trimble). The driver reads out much of the internal GPS data and makes it accessible via clock variables. To find out about additional variable names, query for the clock_var_list variable on a specific clock association as shown below.

First let ntpq display the table of associations:

Then switch to raw output. This may be required because of display limitations in ntpq/ntpd - so large lists need to be retrieved in several queries.

Use the cv command to read the list of clock variables of a selected association:

The long output of the command above looks similar to:

Then use the cv command again to list selected clock variables. The following command must be entered as a single line:

The output of the command above is wrapped around depending on the screen width and looks similar to:

Fudge Factors

time1 time: Specifies the time offset calibration factor, in seconds and fraction. The default value depends on the clock type.
time2 time: If flag1 is 0, time2 specifies the offset of the PPS signal from the actual time (PPS fine tuning).; If flag1 is 1, time2 specifies the number of seconds a receiver with a premium local oscillator can be trusted after losing synchronisation.
stratum stratum: The stratum for this reference clock.
refid refid: The refid for this reference clock.

flag1 { 0 | 1 }: If 0, the fudge factor time2 refers to the PPS offset.; If 1, time2 refers to the TRUST TIME.
flag2 { 0 | 1 }: If flag2 is 1, sample PPS on CLEAR instead of on ASSERT.
flag3 { 0 | 1 }: If flag3 is 1, link kernel PPS tracking to this refclock instance.
flag4 { 0 | 1 }: Delete next leap second instead of adding it. (You'll need to wait a bit for that to happen 8-)

Note about auxiliary Sun STREAMS modules (SunOS and Solaris):

The timecode of these receivers can be sampled via a STREAMS module in the kernel. (The STREAMS module has been designed for use with Sun systems under SunOS 4.1.x or Solaris 2.3 - 2.8. It can be linked directly into the kernel or loaded via the loadable driver mechanism.) This STREAMS module can be adapted to convert different time code formats. Nowadays the PPSAPI mechanism is usually used.

Making your own PARSE clocks

Schweitzer Engineering Laboratories Hr

The parse clock mechanism deviates from the way other NTP reference clocks work. For a short description of how to build parse reference clocks, see making PARSE clocks.

Additional Information

Brewload