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Ambient/storage temperature and humidity limits, pollution degree, and height restrictions.
Details on supply voltage, power consumption, wiring, date retention, EMC, and safety standards.
Configuration options for START, GATE, and RESET input types and pulse timing.
Specifications for the main control output (Relay/S.S.OUT) and auxiliary power supply.
Information on housing type, dimensions, weight, enclosure material, and cleaning precautions.
Defines the PV/SV displays, character height, and functions of the keypad buttons.
Provides the exact dimensions required for cutting the panel to install the timer.
Details on installation, wiring, safety precautions, and important notes for proper connection.
Lists configurable parameters such as sensor type, time bases, output types, and security settings.
Explains how to navigate and modify numerical and non-numerical parameters using the device keys.
Details the 9 different output types with diagrams for TON (Relay On time) and TOFF (Relay Off time).
Illustrates typical wiring connections for PNP and NPN sensor types to the timer's terminals.
The ENDA ETM442 Digital Timer is a versatile and user-friendly device designed for precise timing applications in control panels. Its compact 48x48mm size and clear 2x4 digit display make it suitable for a wide range of industrial environments.
The ETM442 Digital Timer is primarily used for controlling time-based operations. It offers nine different time bases, allowing for timing intervals from 0-99.99 seconds up to 0-9999 hours, providing flexibility for various applications. Users can select between PNP or NPN sensor types, adapting the timer to different input signal requirements. The device supports both up and down counting directions for time, further enhancing its adaptability.
A key feature of the ETM442 is its ability to adjust minimum On and Off times for pulses, which is crucial for applications requiring precise pulse control. It can operate with or without memory for each of its nine output types, offering flexibility in how the timer responds to power interruptions or resets. The bottom display can be configured to show either the time unit or the set value, providing relevant information at a glance.
The timer includes a functional reset option, allowing users to easily return the device to its initial state. For enhanced security and control, parameter access can be protected on three different levels, preventing unauthorized modifications.
The ETM442 is designed for ease of use, featuring a front panel keypad for straightforward programming and operation. The removable screw terminals simplify electrical connections, making installation and maintenance more convenient.
The device offers various output configurations, including relay and solid-state outputs, to suit different control needs. The relay output provides NO+NC contacts for resistive loads, while the open collector output offers a solid-state option for lower power applications. An auxiliary 12V DC power supply is available for sensors, streamlining the overall system design.
The programming mode allows for detailed configuration of parameters such as time base, sensor type, counting direction, and output type. The bottom display can be toggled to show either the time unit (seconds, minutes, or hours) or the set value (ton or toff), providing immediate feedback during setup and operation. The security option menu, accessible via an access code, allows for further control over parameter programming and reset options.
The timer supports various operational modes, including delay on energization, cyclic timing (single cycle or continuous), timing on impulse (one-shot), timing after impulse (delay off), and timing on energization with memory. These diverse output types enable the ETM442 to be integrated into complex control sequences. The device's behavior can be configured to reset the timer via the keypad, a dedicated RESET input, or both, offering multiple ways to manage its operation.
The ETM442 is built with an EEPROM for data retention, ensuring that programmed settings are saved for a minimum of 10 years, even in the event of a power loss. This eliminates the need for reprogramming after power interruptions, contributing to operational efficiency.
The device is designed for flush-panel mounting according to DIN 43 700 standards, ensuring a secure and integrated fit within control panels. Its self-extinguishing plastic enclosure enhances safety.
For cleaning, it is important to avoid solvents such as thinner, benzine, acid, or corrosive materials, as these can damage the device. Adhering to these cleaning guidelines helps maintain the device's integrity and prolong its lifespan.
Installation should be carried out by qualified staff, following all relevant local regulations. The device should be protected from inadmissible humidity, vibrations, and severe soiling, and operated within its specified temperature range to ensure optimal performance and longevity. Shielded and twisted cables should be used for input and output lines not connected to the supply network, and these cables should be kept away from power cables or components to minimize interference. The CE mark indicates compliance with European Norms, assuring quality and safety standards.
General| Type | Digital Timer |
|---|---|
| Display | LCD |
| Frequency | 50/60 Hz |
| Output | Relay |
| Battery Backup | Yes |
| Supply Voltage | 100-240V AC |
| Operating Temperature | -10°C to +55°C |
| Dimensions | 48 x 48 mm |
| Mounting | Panel Mount |
