Instruments for switching and speed measurement

February 2001 Operator Interfaces, Switches & Relays

The microprocessor-controlled converters and switching instruments of the Jaquet FT1400 series are for monitoring measured variables as a function of time, such as rotational speed, clock rate, etc. The input signals are in the form of a frequency that is proportional to the speed being monitored.

The 1400 family consists of the frequency/current converter FTW1413, the combined tachometer converter/frequency relays FTFW1422 (two setpoints) and the FTW1424 (four setpoints). There is a two-line LCD display and a six-key keypad to enter and display all the parameters and an RS232 serial interface. The measuring range and limits may be entered and displayed in m/min, l/min, etc.

There is a choice of current or voltage output - with rising or falling characteristic. The output signal has 12 bit resolution and the instrument exhibits a fast response for overspeed shutdown (1 period of input frequency +5 ms). These new models exhibit improved RF interference and power line immunity. The upper and lower switching points of each of the four setpoint limits are individually programmable.

Integrated monitoring of two and three-wire sensors is included, with permanent display of the measured value and the relay positions. Upper and lower limits for the sensor current consumption can be set anywhere in the range from 0 to 70 mA, allowing the instrument to detect failure of sensors, or cable breaks.

Triggering of the start-up bridging is programmed via two binary inputs. Binary Input 1 is used for selectable controlling functions such as resetting of relays, or the external switching between two programmable setpoints. Binary Input 2 selects the external power supply voltage.

Further reading:

Power and control platform for complex applications
Schneider Electric South Africa Operator Interfaces, Switches & Relays
Schneider Electric has unveiled the latest device in its PowerLogic range of products, the PowerLogic P7 digital power and control platform. This was designed to offer the best performance in complex and high-demand applications, and is based on a visualisation-ready, next-generation platform powered by a single configuration tool, the PowerLogic engineering suite.

Read more...

---

High-efficiency switching solutions
Operator Interfaces, Switches & Relays
Becker Mining South Africa has launched a new-generation energy distribution system that has been specially developed to enhance productivity and safety in the challenging conditions of local underground coal mines.

Read more...

---

World-first solution for platinum miner
ABB South Africa Operator Interfaces, Switches & Relays
When a consulting engineering company approached ABB about a specific problem that its platinum mining client was experiencing at its smelter facility in the North West Province, it was an opportunity for the technology provider to showcase its innovation and adaptability in responding to specific customer requirements.

Read more...

---

Robust industrial relays
Vepac Electronics Operator Interfaces, Switches & Relays
Industrial RT relays from Vepac are particularly robust and are used for high load control. RT modules can control up to three changeover contacts, with 10 A each. In addition, this product is equipped for safety reasons with manual operation, improved LEDs or free-wheeling diodes.

Read more...

---

Pick-to-light device with added flexibility
Turck Banner Southern Africa Operator Interfaces, Switches & Relays
Pick-to-light devices and systems help industrial automation manufacturers reduce the risk of error in the assembly process, ensuring product quality and reducing cost. These devices are also used in kitting and put-to-light operations to ensure high accuracy in fulfilment operations.

Read more...

---

Protection relays – control what you can
Schneider Electric South Africa Operator Interfaces, Switches & Relays
With municipalities’ distribution centres and equipment taking immense strain due to load shedding, maintenance has unfortunately moved down the priority list. The time is now to implement what municipalities can control - protecting and monitoring installed equipment.

Read more...

---

Programmable multicolour indicator beacons
Turck Banner Southern Africa Operator Interfaces, Switches & Relays
Pro Editor software lets users program the K100 Pro Daylight Visible and K100 Pro Indicator with a variety of alarms, colours and animations.

Read more...

---

Low-profile touchless switches
Fox Controls Rand Operator Interfaces, Switches & Relays
LED illumination and indoor/outdoor durability make these low-profile touchless switches ideal for clean and functional industrial and public applications.

Read more...

---

PID controller with multicolour LCD
Allpronix Operator Interfaces, Switches & Relays
The Novus N1050 is an advanced PID controller featuring a large, bright and easy-to-read multicolour 11-segment LCD display with clear status signalling.

Read more...

---

Switch amplifiers for multiple voltage ranges
Pepperl+Fuchs Operator Interfaces, Switches & Relays
The new KFU8-SR-Ex product family of switch amplifiers from Pepperl+Fuchs offers a solution that is both efficient and reliable.

Read more...

---