129506 2012-12
12
KFU8-DW-1.D
Product Description
The monitoring function is actuated by a limiting value, whose upper
and lower hysteresis values can be selected within the relevant
measurement and indicating range.
The output signal is generated by a changeover relay when the value
exceeds or falls below the hysteresis limits. Due to its high switching
capability, the relay output can be used to directly drive an actuator, or
as an input signal to a higher level control.
In addition, the switching state of the relay is indicated by a yellow
LED on the front of the device.
A function block is connected in line with the output relay, which
enables 10 different timer functions to be employed; thus there is no
need to connect a separate timer relay in series. In addition to ON
delay, OFF delay, defined ON time and pulse expansion, the direction
of operation of the relay can also be selected, i.e. to monitor
underspeed or overspeed.
The integral startup override is triggered when the supply voltage is
switched on or by an external signal and prevents false signals from
occurring when the monitored system starts up.
The rotational speed monitor can be operated with a 115 V
AC
,
230 V
AC
or 24 V
DC
power supply. When an alternating voltage is
connected, a 24 V
DC
source is available for the sensor.
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