CM-EFS single-phase window voltage monitors are used to monitor the proper operation of equipment and control systems.
Window voltage monitors ensure the voltage remains within preselected over- and undervoltage threshold values (trip points). If the voltage exceeds the upper limit or falls below the lower limit, the output relay (c/o) energizes / de-energizes. A selectable latching function and an adjustable tripping delay prevent nuisance tripping.
Product range overview
CM-EFS.2 – Over- and undervoltage monitoring (window monitoring)
Characteristics of CM-EFS.2 window voltage monitors
- Single-function devices
- Devices with 2 c/o (SPDT) contacts rated 250 VAC at 4 A
- Measuring ranges up to 600V AC/DC
- Selectable open- (normally de-energized) or closed-circuit (normally energized) principle
- Adjustable ON- or OFF-delay (0; 0.1 - 30 s)
- Fixed switching hysteresis of 5 %
- Wide supply voltage range
- LEDs for status indication
- Adjustment of threshold values (trip points) and time delays via direct reading scales
- Setting and operation via front-face operating controls
- Configurable latching function
- RMS measuring principle (any wave form)
- Frequency range of measured voltages: DC and 15 Hz – 2000 Hz
- Integrated and snap-fitted front-face marker
- Sealable transparent cover (accessory)
- Adapter for screw (surface) mounting (accessory)
Examples of application
- Speed monitoring of DC motors
- Monitoring of battery voltages and other supply networks
- Monitoring of upper and lower voltage threshold values (trip points)