Frequency Transducers

DIN rail mounting transducers available in 55mm x 112mm or 100 x 112mm DIN rail cases.

Used to convert various inputs into standard DC signals for driving panel meters and for use in control devices.

M100-FA1 Self powered true zero outputs
M100-FL1 Auxiliary powered live zero outputs
M100-FX1 Auxiliary powered true zero outputs

The M100 series of frequency transducers are designed to measure frequency in single and 3 phase systems. The A.C. Input is converted to a D.C. output that is directly proportional to the change in input frequency within a specified span. The M100-FA1 is self powered (No auxiliary required). The working voltage range is 75% to 125% of the nominal voltage.

The M100-FL1 is auxiliary powered. The outputs are live zero, either 4mA or 1 volt. The auxiliary enables the working voltage range to be 15%-125% The M100-FX1 is essentially the same as the FA1 but an auxiliary is provided to enable the unit to have a working voltage range of 15%-125%. All types of the above frequency transducers are typically used to monitor and control frequency in such applications as 3 phase mains supplies, A.C. Generating sets and processing control etc.

Rated Value Un 57.8 << 600V
Power Consumption < 1VA  (FL1, FX1) < 1.5VA (FA1)
Working Range 75-125%  Un(FA1)15-125%Un (FL1, FX1)
Measuring Range 45-55/45-65/55-65/360-440Hz
Overload Continuous 1.5 x Un
Overload for 1 sec 2 x Un (VA1 VA3)
Rated value mA 0-1/5/10/20mA(FA1,FX1)
Rated value mA 4-20mA (FL1)
Rated value volts 0-5/10V(FA1,FX1)
Rated value volts 1-5V(FL1)
Zero No adjustment
Span No adjustment
A.C. Voltage 115/230/400V (± 25%/45-65Hz/<2VA)
D.C. Voltage 24/48/110V( ±20% / galvanically isolated
/ < 3W) Note M100-FA1 is self powered
WEIGHT&CASE SIZE Approx 0.7kg. 100mm case
Product Code Input In Output Aux Freq Options
M100-VS1 110V ±15% 20mA - 50Hz


1 Non standard inputs/outputs as far as technically viable.
2 A.C. Auxiliary in range 57.7 to 450 volts
3 Calibration at nominal Hz 35....450Hz
4 Calibration at temperature other than 23ºC