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The frequency transducer/pulse counter IM12-

FI01-1SF-1I1R-C0/24VDC/CC transmits frequency signals up to 20,000 Hz galvanically isolated. In addition, limits, slip or clockwise/counter-clockwise rotation can be monitored. The devices are suitable for operation

in zone 2.

The 1-channel device is equipped with two

inputs for the connection of sensors acc. to

EN 60947-5-6 (NAMUR) or potential-free contacts. On the output side, there is a 0/4…

20 mA current output and a normally open relay.

The device is parameterized via FDT and

IODD with a PC. The current output can be

set to 0/4…20 mA (source or sink optional). In

accordance with the parameterization (I1, I2,

I1 - I2 or I2 - I1), the input signals are output

as a 0/4…20 mA normalized current signal.

The normally open relay facilitates the monitoring of set limits for exceedance/shortfall

and monitoring using a window function. The

start-up bypass (SUD) is activated via input I1,

I2 or I3.

The devices have a green power LED (Pwr)

and a red LED to indicate internal faults. For

the input circuit, a yellow and red status LED

is available. A fault in the input circuit leads

to a flashing red LED according to NE44, an

internal error to a steady red LED. The fault

current can be adjusted to 21.5

mA. A yellow LED indicates the switching

state of the limit value relay. A yellow LED indicates that the start-up bypass is turned on.

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 spring type terminals.

The device is equipped with removable

spring-type terminals.

■ Input circuits monitored for wire-break and

short-circuit

■ Parameterized via PC

■ Complete galvanic isolation

■ Removable spring type terminals

■ ATEX use in Zone 2, cUL

■ SIL 2