Signal Converters and Isolators
Signal converters and isolators galvanically separate analog field signals or measured current and convert them into a standard signal suitable for PLC and controller inputs. They are used in automation panels to isolate circuits, adapt signal levels and suppress noise. The category includes the WAGO 857-400 signal isolator (24 VDC supply, 6 mm wide, isolation amplifier configured with DIP switches) and Klemsan products: the CT3-AC true RMS current transducer (0–5 A AC input, 85–265 V AC/DC supply), the ASCON 311 adjustable analog signal converter (DC mV, V and mA input, 11–30 V DC supply) and the PISO-DC-1 passive DC signal isolator (4–20 mA input and output, single channel). When choosing a product, compare the input and output signal type, supply voltage and number of channels with the technical values. A passive isolator needs no separate supply and draws its power from the signal loop, while active converters require their own supply voltage.
Products
- Siemens 3RQ4901-0C Connection Comb, 8-pole — Siemens · SKU: 3RQ4901-0C · TRY 373.00 · Made to order
- Siemens 3RQ4901-0D Connection Comb, 16-pole — Siemens · SKU: 3RQ4901-0D · TRY 608.00 · Made to order
- Siemens 3RQ4901-0A Connection Comb, 2-pole — Siemens · SKU: 3RQ4901-0A · TRY 143.00 · Made to order
- Siemens 3RQ4901-0B Connection Comb, 4-pole — Siemens · SKU: 3RQ4901-0B · TRY 220.00 · Made to order
How to choose Signal Converters and Isolators
Signal converters and isolators galvanically separate analog field signals or measured current and convert them into a standard signal suitable for PLC and controller inputs. They are used in automation panels to isolate circuits, adapt signal levels and suppress noise.
- Separate sensing, motion control, logic processing and operator interface requirements.
- Select signal type, supply voltage, communication protocol and I/O count for the machine network.
- Verify housing size, sensing distance and PNP/NPN output polarity against the PLC input card.
Frequently asked questions
What is Signal Converters and Isolators and where is it used?
Signal converters and isolators galvanically separate analog field signals or measured current and convert them into a standard signal suitable for PLC and controller inputs. They are used in automation panels to isolate circuits, adapt signal levels and suppress noise.
What should I compare when choosing Signal Converters and Isolators?
When choosing a product, compare the input and output signal type, supply voltage and number of channels with the technical values.
Where can I find technical details for Signal Converters and Isolators products?
Open a product page to review the available specifications, stock code, brand, price and availability information.