The IFM DD2503 is a programmable pulse evaluation system designed for speed, frequency and machine-cycle monitoring. It provides one pulse input with two adjustable switching points. The device can monitor whether a preset value is exceeded, not reached or within an acceptable range. It supports both AC and DC supply voltages for flexible industrial installation. The compact DIN-rail housing provides convenient integration into machine control panels.
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The DD2503 processes pulse signals to determine frequency, rotational speed or machine cycles. Two switching points provide flexible monitoring of acceptable and unacceptable operating conditions. The analogue output can be used to transmit the measured value to another control system. The device can therefore perform both monitoring and signal evaluation. It is suitable for applications requiring more advanced speed evaluation than basic switching monitors.
The unit supports PNP, NPN and NAMUR-type pulse sensors depending on the configured application. The 0/4...20 mA analogue output provides a convenient interface to PLCs and control systems. Relay and transistor outputs can be used for machine status indication. Programmable functions allow the unit to be adapted to different process requirements. This makes it suitable for industrial motion-control applications.
Single pulse input
Two switching points
Frequency measurement
Rotational speed monitoring
Machine-cycle monitoring
PNP/NPN support
NAMUR capability
0/4...20 mA analogue output
Relay output
Transistor output
Programmable monitoring
Wide AC/DC supply
DIN-rail mounting
Machine diagnostics
LED indication
Conveyors
Rotational machinery
Machine-cycle monitoring
Speed monitoring
Pump monitoring
Fan monitoring
Motor monitoring
Industrial automation
Material handling
Machine protection
Production machinery
Motion control
| Specification | Details |
|---|---|
| Brand | IFM |
| Model | DD2503 |
| Product Type | Pulse Evaluation System |
| Product Family | MONITOR FR-1 |
| Pulse Inputs | 1 |
| Switching Points | 2 |
| Input Sensor Types | PNP / NPN / NAMUR |
| Supply Voltage AC | 110...240 V AC |
| Supply Voltage DC | 27 V DC nominal |
| Analogue Output | 0/4...20 mA |
| Relay Output | Supported |
| Transistor Output | Supported |
| Measurement | Frequency / speed / pulses |
| Monitoring | Over / under / range |
| Programming | Configurable |
| Display/LED | Status indication |
| Mounting | DIN rail |
| Housing | Industrial housing |
| Dimensions | Approx. 78 × 45 × 124.7 mm |
| Connection | Screw terminals |
| Sensor Supply | Supported |
| Output Function | Switching / analogue |
| Application | Speed monitoring |
| Process Variable | Frequency / rotational speed |
| Installation | Control cabinet |
| Protection | Industrial control equipment |
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