M&C TechGroup FA-1_2_3,bi Operator's manual - Manual (Page 11)

11
Gas sampling and conditioning technology 5-6.10-ME
12 MOUNTING
Fix the flow alarm sensor , while the connection cable points to the left side (M&C-imprinting is
readable) and using the locking screw 
onto the flow meter’s measuring tube  on the desired
control point for a min.-alarm (floating particle is situated in normal operation above the flow alarm
sensor) in such a way that the light beam of the flow alarm sensor will not be deflected by eventual
inscriptions or coloured background of the measuring tube.
The design of the optical flow alarm sensor (forked light barrier) provides perfect function in case of
normal day light or normal illumination. A strong incidence of light from outside to the sensor should
however be avoided.
In case the flow alarm sensor is mounted by 180° distorted, (connection cable points to the right side),
the function is reversed (max.-alarm, floating particle is in normal operation below the forked light
barrier).
The electronic controller FA1.1 is destined for wall mounting. Mounting dimensions see figure 2,
page 13 .
The electronic controller FA1.4 is destined for rail mounting according to EN 50022. Mounting
dimensions see figure 3, page 14.
13 ELECTRICAL CONNECTION
W A R N I N G !
Incorrect power supply may destroy the device. When connecting
the equipment, please ensure that the supply voltage is identical
with the information provided on the type plate!
W A R N I N G !
When setting high-power electrical units with nominal voltages of
up to 1000 V, attention must be paid to the requirements of VDE
0100 together with the associated standards and stipulations!
A main switch must be provided externally.
The main circuit of the device must be equipped with a fuse
corresponding to the nominal voltage (over current protection); for
electrical details see technical data.
The sensor cable should not be too short when being fixed in order to assure a simple dismounting of
the forked light barrier in case of control or cleaning.
The electronic controllers FA-1.1 are equipped with a selector switch S3 for the power supply of 230 or
115 V. At the factory, this switch is adjusted to 230 V. Before starting, check the desired supply
voltage and adjust the selector switch if necessary by means of a screw driver.
The electronic controllers FA-1.4 in 24 V execution are suitable for both direct voltage as well as
alternating voltage.