Single-Phase Over- and Undercurrent Monitoring (Window Monitoring)

CM-SFS single-phase window current monitors are used to monitor the proper operation of equipment and control systems.

Window current monitors ensure the current remains within preselected over- and undercurrent threshold values (trip points). If the current 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-SFS.2 - Over- and undercurrent monitoring (window monitoring)

Characteristics of CM-SFS.2 window current monitors

    • Single-function devices
    • Devices with 2 c/o (SPDT) contacts rated 250 VAC at 4 A
    • Measuring ranges up to 15 A AC/DC*
    • Selectable open- (normally de-energized) or closed-circuit (normally energized) principle
    • Adjustable ON- or OFF-delay (0; 0.1 - 30 s)
    • Adjustable start-up 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 currents: DC and 15 Hz – 2000 Hz
    • Integrated and snap-fitted front-face marker
    • Sealable transparent cover (accessory)
    • Adapter for screw (surface) mounting (accessory)
    • External current transformers CM-CT for higher currents (accessory)
              * depending on device
Examples of application
    • Monitoring of motor current consumption
    • Monitoring of lighting installations and heating circuits
    • Monitoring of hoisting gear and transportation equipment overload
    • Monitoring of locking devices, electromechanical brake gear and locked rotor

Documentation and downloads

Brochure
Brochure - "Single-phase current and voltage monitoring relays CM range"

English - 1.49 MB - pdf

Catalogue
Express Timers & Controls

English - 4.82 MB - pdf

Express Timers & Controls

English - 1.16 MB - pdf

Technical catalogue 2009 - Chapter "Measuring and monitoring relays CM and C5xx range"

English - 6.22 MB - pdf

Certificate
CCC Certificate - Single-phase current and voltage monitoring relays CM range and temperature monitoring relay CM-TCS

English - 0.50 MB - pdf

cUL 508 Certificate - Time Relays CT range, Measuring and Monitoring Relays CM and C51x range, Safety relays C57x, C67xx range

English - 0.05 MB - pdf

Environmental Information - Measuring and Monitoring Relays CM range, C51range, C558 range, Accessories and current transformers CM-CT

English - 0.02 MB - pdf

GOST Certificate - Measuring and Monitoring Relays CM-range

English - 0.80 MB - pdf

RMRS Certificate - Measuring and Monitoring Relays CM range

English - 0.22 MB - pdf

UL 508 Certificate - Time Relays CT range, Measuring and Monitoring Relays CM and C51x range, Safety relays C57x, C67xx range

English - 0.05 MB - pdf

Data sheet
Data sheet - CM-SFS.2 Current window monitoring relay, single-phase AC/DC

English - 0.64 MB - pdf

Declaration of conformity
New/updated document CE Declaration of Conformity - Current and voltage monitoring relays CM-EFS.x, CM-ESS.x, CM-SFS.xx and CM-SRS.xx

English - 0.16 MB - pdf

RoHS Declaration - Single-phase monitors, CM range

English - 0.07 MB - pdf

Information
Conversion table - New single-phase current / voltage and three-phase monitoring relays, CM range

English - 0.02 MB - pdf

Instruction
Instruction Sheet / Manual - CM-SFS.2

English - 1.30 MB - pdf

Press release
Example of press release - Single-phase current and voltage monitors

English - 0.09 MB - pdf

Text file of press release - Single-phase current and voltage monitors

English - 0.12 MB - doc

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