Frequency to Current converter
DAT4540R
The DAT4540R is an isolated frequency input converter designed to accept signals up to 20 kHz from a wide range of sensor types, including TTL, Namur, NPN, PNP, and tachometers. It converts the frequency signal into a proportional analog output either current or voltage depending on the configuration. The “-R” version includes two relay outputs, which can be independently programmed as trip alarms.
For Namur-type sensors, the DAT4540R continuously monitors the signal integrity. In the event of a fault condition such as wire break or short circuit an alarm is activated via the dedicated transistor output, enhancing system reliability and safety monitoring.
The device ensures high measurement accuracy and long-term stability across a wide temperature range. Configuration can be done via dip-switches located on the side of the unit for selecting input type, frequency range, and output signal, all without the need for recalibration. Full parameter customization is also possible through PC programming using dedicated software.
Complete galvanic isolation is provided between input, output, and power supply, effectively eliminating ground loop issues and allowing operation in harsh industrial environments. The unit is housed in a compact 12.5 mm DIN rail enclosure, compliant with EN-50022 and EN-50035 standards.
| INPUT | OUTPUT | POWER SUPPLY |
|---|---|---|
| Namur, TTL, PNP, Tacho, Volts. | Current 4-20mA, 0-20mA. | Power Supply Voltage 14-30Vdc |
| Voltage 0-10V Min Span 1 V. | Reverse polarity protection 60Vdc | |
| CURRENT CONSUMPTION | CONFIGURATION | ISOLATION |
| Between 60 and 115 mA | PC Programmable | 3 Way 1500Vac. |
| EMC | HOUSING | TEMPERATURE |
| For Industrial environments | Material self-extinguishing | Operating Temperature -4°F +140°F -20°C +60°C |
| Immunity EN 61000-6-2 | Dimensions W x H x T 3 1/2" x 4 1/2 " x 1/2" | Storage Temperature -40°F +185°F-40°C +85°C |
| Emission EN 6100-6-4 | 90 x 112x x 12.5 mm | Humidity (non condensing) 0-90% |
| Weight 3 oz 90 g |
| Input: | Tacho, Voltage, TTL, Namur, PNP. See Data sheet for range. |
| Output: | Current 4-20mA, 0-20mA Min span 4mA. Voltage 0-10V Min Span 1 V. |
| Output Relay: | 2 X SPDT Max Load 250Vac, 2 Amp. |
| Output Digital: | Transistor output Max load 30 Vdc, 100mA. |
| Power Supply: | 20 to 30 Vdc. Reverse polarity protection 60 Vdc. |
| Current Consumption: | Current output 90 mA max. |
| Temperature rating: | Operative -4°F +158°F -20°C +70°C |
| Temperature Storage Temperature -40°F +185°F -40°C +85°C. | |
| Humidity: | (non condensing) 0-90%. |
| Housing: | Material self-extinguishing. |
| Dimensions: | 3 1/2" x 4 1/2 " x 1/2", 90 x 112x x 12.5 mm. |
| Weight: | 3 oz 90 g. |
| EMC. | For industrial environments. |
| Immunity: EN 61000-6-2. | |
| Emission: EN 61000-6-4. | |
| Configuration: | PC Configurable and DIP Switch Configurable |
| Input. | Namur | G and L |
| PNP | G and L | |
| TTL/Volt | L and I | |
| Tacho | H and I | |
| Signal Output. | ||
| Voltage. | Positive O Negative P | |
| Current. | Active | Positive M Negative N |
| Passive | Positive N Negative P | |
| Relay Output. | Relay A | Relay B |
| Common D and C | Common S and T | |
| Normally closed B | Normally closed U | |
| Normally open A | Normally open V | |
| Power Supply (18-30Vdc). | Positive Q Negative R. |
