DHA51 is a fully programmable timer that allows the execution of self-designed timing functions. The function can be prepared using the free PC software BHF and connecting the unit to the PC. It is suitable for mounting on a DIN-rail and has a 17.5 mm wide housing that can be mounted on both back and front panels. The timer is fully programmable and can have waveform design capabilities with up to 32 status changes, each with a time range of 0.1 s to 100 h. It has a programable trigger input event and offers full reprogrammability of the timing functions. The repeatability is ≤ 0.2% and it has a 5 A SPDT relay output. The unit can be mounted on a DIN-rail and has a combined AC and DC power supply. It also features LED indication for relay status and power supply ON. The SPDT relay has a rated insulation voltage of 250 VAC (rms) and various contact ratings for different loads. It has a mechanical life of ≥ 30 x 106 operations and an electrical life of ≥ 105 operations (at 5 A, 250 V, cos ϕ = 1). The operating frequency is < 7200 operations/h. The timer has a dielectric strength with a dielectric voltage of 2 kVAC (rms) and a rated impulse withstand voltage of 2.5 kV (1.2/50 µs). The product is available in different types based on the housing, function, output, power supply, and time steps.
The DHA51 is a fully programmable timing unit designed for DIN‑rail mounting. It offers up to 32 status changes per program, time steps from 0.1 s to 100 h, and a SPDT relay output rated at 5 A. The unit can be powered from 24 VDC to 240 VAC and includes LED indicators for power and relay status.
Programming is performed with the free BHF PC software via a parallel‑port cable (T‑RUN PCABLE). The manual details wiring diagrams, operation sequences, environmental ratings, and mechanical and electrical life specifications, enabling users to create custom timing functions for a variety of applications.
| Output type | SPDT relay, 5 A |
|---|---|
| Power supply range | 24 VDC to 240 VAC |
| Time step range | 0.1 s to 100 h |
| Repeatability | < 0.2 % |
| Setting accuracy | 0.1 % ± 10 ms per step |
| Rated insulation voltage | 250 VAC (rms) |
| Dielectric strength | 2.5 kV (1.2/50 µs) |
| Operating temperature | -20 °C to +60 °C |
| Housing dimensions | 17.5 × 81 × 67.2 mm |
| Weight | 759 g |
Connect the T‑RUN PCABLE to the unit’s parallel port and use the free BHF PC software to create and download timing functions.
The timer operates from 24 VDC up to 240 VAC, with a tolerance of ±15 % on the AC range.
The timing repeatability is better than 0.2 %.
Yes, an extra load such as a relay can be wired between pins Y1 and A2 and driven by the trigger contact.