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NT 240

Product catalog summary

Introduction
The NT240 is a versatile programmable timer designed for monitoring time intervals and activating outputs based on user-defined modes and time intervals. It supports both increasing and decreasing time displays with resolutions ranging from 0.01 seconds to 1 hour. The timer can be controlled using digital inputs compatible with NPN, PNP, or dry contact sensors for START, HOLD, and RESET commands. Standard outputs include relay and logic pulse (5V).

Features

Multiple operating modes including delayed activation, pulse, and cyclic operations after power-up or START signals.
Input types: NPN/PNP sensors and NO/NC dry contacts.
Outputs: 1 SPST Relay (3 A/250 Vac or 3A/30 Vdc) and 1 voltage pulse (5 V/25 mA).
Accuracy of 0.1% of displayed time with a response time of 10ms for relay output and 0.3ms for pulse output.
Time base with 7 scales ranging from 99.99 seconds to 9999 hours.
Auxiliary power supply: 12 Vdc ±10% / 50 mA.
Dual 4-digit display supporting UP or DOWN time counting in decimal or hour:minute:second format.
Power options: 100 to 240 Vac/da ±10%, 50/60 Hz or 24 Vdc/ac, 50/60 Hz with a maximum consumption of 3 VA.
Operating environment: 5 to 50 °C, 30 to 80% humidity.
Dimensions: 48 x 48 x 110 mm with a panel cutout of 45.5 x 45.5 mm.
Silicone rubber keypad with an IP65 rated front panel and IP30 rated back panel.
Constructed with polycarbonate UL94 V-2 front panel and ABS+PC UL94 V-0 back panel.
Certified with CE and UL ratings.

Catalog excerpts

The NT240 is a programmable timer designed to monitor time intervals, activating its outputs according to some predefined mode of operation and time intervals chosen by the user. The user can also create its own mode of operation to best fit his application. The timer shows the elapsed time in an increasing or decreasing mode, with resolutionsfromO.OIstol hour. Digital inputs for NPN, PNP or dry contact sensors are available commanding the timer START, HOLD and RESET. The standard outputs are relay and logic pulse (5V). Input types: NPN/PNPsensors;NO/NCdry contact. Outputs: 1 SPST Relay 3 A/250 Vac (3A/30 Vdc); Accuracy: 0,1% of displayed time. Response time: 10ms for the relay output and 0.3ms for the pulse Ti me base: 7 sea I es, f ro m 99.99 seco nds to 9999 hours. Auxiliary power supply: 12 Vdc ±10%/50mA. UP or DOWN time counting (decimal or hour:minute:second). Power: 100 to 240 Vac/da ±10%, 50/60 Hz or 24 Vdc/ac, 50/60 Hz. Operating environment: 5 to50°C, 30 to 80% humidity. Silicone rubber keypad. Front panel: IP65, Polycarbonate UL94V-2. OPERATING MODES Mode 0 - Delayed activation after power-up Power Supply Mode 1 - Delayed pulse after power-up Mode 2 - Pulse at power-up Mode 10 - Delayed pulse after continuous START signal |- tLSP -|- ouLt -| |— |- tLSP [email protected] NOVUS AUTOMATION

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