C-mac signal converters are used to convert various non-standard electrical input signals to standard engineering units (0-20 mA, 4-20 mA or 0-10 V signals).

Input signals can be AC or DC current and voltage (up to 10 A and 1500 V), temperature sensors, proximity sensors for speed monitoring, resistors and potentiometers, 1- and 3-phase load and power monitoring, etc.

Most of the units gives a galvanic isolation between supply, inputs and outputs, thereby ensuring a safe isolation between the process control equipment and the external environment.

With the various C-mac relays it is possible to monitor and control most of the signals involved in industrial and domestic control panels (current, voltage, temperature, load, speed, level, time, etc.). All units are produced in accordance with the CE regulations with special focus on noise immunity and operation under the severe conditions, which applies to many industrial applications.

The C-mac current transformers series CS and SC are used to monitor high AC currents (up to 200 A). The transformers, which are supplied with built-in electronics, are divided in 2 groups:

1. Current switches.

These units are used to give a signal, if the AC current exceeds a preselected setpoint. The setpoint is adjusted on a potentiometer on the transformer.

2. Current converters.

These units converts the primary AC current to a standard 4-20 mA DC output current.