Timers
20Pages

Always up to the minute Timers 152.2. C 11/04 archive image swisslog SCHIERHOLZ

The immensely robust timers from Schleicher Electronic – Wieland’s electronics competence centre in Berlin – set standards. To this day our reputation is based on ultra-high precision and the proverbial reliability of our products, as reflected by the number of guaranteed switching cycles. For decades the whole manu-facturing sector was based on control by timers, whose durability and repeatability had a crucial influence on servicing and production costs. Cutting Edge Our relays are designed for the world market, and naturally fulfil all European and international norms. Continuous...

T imers 2 | 3 The latest is the NGG series with ultra-modern microprocessor technology, covering almost all typical industrial applications and offering considerable potential for rationalization. These convincing multi-function relays in their slim environmental housings for DIN rail assembly demonstrate the technical possibilities that exist today. They offer 33 functions ranging from established standards to completely new applications, such as cost-effective monitoring of a connected PLC. Alongside this rigorous new concept for current and future industrial requirements, Wieland’s...

Decades of timer competence are packed into a completely new, highly miniaturized generation of timers just 22.5 mm wide. Although the end of the timer has been being predicted for years now, as the PLC has spread, high quality timers with well thought-out designs and universal appli-cability will continue to be needed in industrial automation. Timers remain crucial – in less complex series machines, in later modifications, everywhere where other solutions would result in unnecessary engineering and hardware costs. For these applications Wieland offers a range of timers that provides...

4 | 5 Multi-Voltage on the Move With a clearly structured front panel and a field for lettering, these well-designed devi ces make for easy operation and con- trol. Function and time settings are changed from the front using a standard screwdriver on large, easy to set analog scales and rotary switches while the relay remains installed. All the controls are flush with the front or slightly recessed, to reliably prevent accidental changes to settings. LEDs show the state of the excitation input, the position of the contacts and the countdown. NGG relays operate in any orientation. They are...

The precision relays of the NGG series control the shortest of times to one hundredth of a second, and extremely long processes too. 16 different setting ranges can be selected on the RANGE switch on the front of the relay, allowing precision switch-ing of times from 0.05 s to 300 h. Before the devices are installed the time range can be set quickly from the side. After the time range has been chosen, the required time within the range is set on the large, easy to read disk. As well as the very flexible multi-range relays, we also have mono versions and relays with fixed times, for example...

Connection No Problem Wieland relays are also practical in their connection systems. Perfectly matched to the requirements of controller construction and contactor systems, the switching devices can handle all conventional industrial conductor cross-sections. Whether finely stranded with wire-end ferrule, single-core or multi-core – the stable box terminals accept all cross- sections from 0.5 mm2 to 6 mm2 with a max. stripping length of 9 mm. The 3.0 mm Pozidrive-2 screws on the box terminals allow torque up to 1 Nm and are designed for use of automatic screwdrivers. Variable Input Voltage...

Industrial. Day In, Day Out Their robustness and solid electronics make the slim timers perfect for application in all sorts of industrial environment. • Designed for ambient temperatures between –25 °C and +60 °C • Isolation up to 300 V between control circuitry and the relay outputs • Very high interference immunity, meet very high EMC standards • Output relays correspond to utilization category AC-15 at 230 V / 3 A, DC-13 at 24 V / 2 A Environmentally Aware The good ecological balance sheet of the NGG relays, characterized by meticulous selection of materials and well thought-out...

Multi-function relays with several time ranges • 16 or 10 functions • 16 time ranges from 0.1 s to 300 h • 1 or 2 changeover contacts (2nd changeover contact can be used as instantaneous change-over contact, depending on function) • 2 or 3 LEDs for monitoring function • Remote potentiometer connection (NGMP 1001) • Multi-voltage relays AC/DC 16.8 V to 264 V Mono-function relays with several time ranges • 1 function • 16 time ranges from 0.1 s to 300 h • 1 or 2 changeover contacts • 2 LEDs for function display • Remote potentiometer connection (NGZP 71, NGZP 72, NGZP 72-S) • Multi-voltage...

Instantaneous Signal This function allows an additional influence on the output signal in time controls and closed-loop control circuits by allowing on/off switching independent of the elapsed time. Can be used for operate delay, interval on, clock generator and pulse generator. Addition If the excitation variable is off and the countdown thus interrupted, the operate-delayed functions with auxiliary supply can add the individual intervals until the preset operating time has been reached and the timed changeover contact switches to operated condition. Functional Marvels Workhorse Ten...

Method of Function When the excitation variable (B1-A2) is switched on and the auxiliary supply (A1-A2) is also on, the timed changeover contact switches to operated condition and the countdown starts. The countdown restarts each time the excitation variable is switched off and on during the delay time. If the break or make time of the excitation variable is longer than the delay time t, the timed changeover contact switches to normal condition and stays there even if the excitation variable is switched on again. The timed changeover contact switches to normal condition immediately when the...