The frequency transducer IMX12-
FI01-1SF-1R-0/24 VDC is equipped with intrinsically safe input circuits and issues a galvanically isolated transmission of frequency signals up to 20,000 Hz from the explosion-hazardous area to the safe area. This device is used for monitoring limit values. The
device is suitable for use in Zone 2.
The one-channel device is equipped with two
intrinsically safe inputs for the connection of
sensors acc. to EN 60947-5-6 (NAMUR) or
potential-free contacts. A changeover relay is
available on the output side.
The device is parameterized via rotary coding switches and DIP switches on the side of
the device. The relay output is used to monitor
whether a limit value exceeds or undershoots
a limit value or lies outside a limit value window. Depending on the parameter, the startup delay (SUD) is activated via input E2 or E3.

The devices have a green and a red Power
LED (Pwr) for indicating the operating voltage
and the parameterization. For each input circuit there is a yellow and a red status LED. An
error in the input circuit causes the red LED
to flash according to NE44. A yellow LED indicates the switch-on delay. A red and a yellow LED are available to indicate the switching status of the relay.
The device can be used in safety circuits up to
SIL2 (high and low demand according to IEC
61508) and meets the requirements of NE21.
It is equipped with removable screw terminals.
The device is equipped with removable screw
terminals.

■ Input circuits monitored for wire break and
short circuit
■ Parameterized via DIP/rotary coding switch
■ Complete galvanic isolation
■ Input reverse-polarity protected
■ Removable screw terminals
■ ATEX, IECEx, cUL
■ Use in Zone 2
■ SIL 2