Installation On The Measuring Inset; Installation On The Top-Hat Rail; Installing / Removing The Optional Lcd Indicator - ABB TTH300 Operating Instructions Manual

7.1.2

Installation on the measuring inset

Fig. 12
NOTICE
Before mounting the transmitter on the measuring inset,
remove the ceramic block on the measuring inset and the
captive screws in the transmitter.
To install the transmitter on the measuring inset, cambered
toothed discs and the corresponding mounting screws are
required; these must be ordered as separate accessories:
Measuring inset installation set (2 fixing screws, 2 springs,
2 toothed discs) order number: 263750
1. Remove the ceramic block from the measuring inset
2. Remove the screws from the
sleeves from the screw holes and then remove the
screws.
3. Insert new fixing screws
of the transmitter.
4. Place the cambered toothed
upward on the downward protruding screw thread.
5. Connect the power supply cable to the transmitter
according to connection diagram.
6. Place the transmitter in the housing on the measuring
inset and secure it.
NOTICE
The toothed discs between measuring inset and transmitter
are straightened when the screws are tightened. This
enables them to grip the mounting screws.
1
2
3
4
A10066
2
transmitter. Remove the
1
from above in the fixing holes
4
discs with curve facing
7.1.3

Installation on the top-hat rail

Fig. 13
When mounted on a top-hat rail, the transmitter can be placed
at a distance from the sensor in a housing that is suitable for
the ambient conditions.
7.2

Installing / removing the optional LCD indicator

Thanks to the LCD indicator interface, the TTH300 can be
operated using the LCD indicator.
The indicator must be removed to enable connection of the
sensor line or supply line:
— Carefully remove the LCD indicator from the transmitter
inset. The LCD indicator is held firmly in place, meaning
that you may have to use the tip of a screwdriver to pry it
loose. Take care to avoid any mechanical damage.
No tools are required to insert the LCD indicator:
3
1. Carefully insert the guide pins for the LCD indicator in the
.
guide holes of the transmitter inset. Make sure the black
connection socket fits into the terminal on the transmitter
inset.
2. Then press the LCD indicator in as far as it will go. Make
sure that the guide pins and connection socket are fully
inserted.
The position of the LCD indicator can be adjusted to suit the
mounting position of the transmitter, to ensure that the display
is as clearly legible as possible.
CAUTION
Make sure the flat ribbon cable does not get twisted or torn
when rotating the LCD indicator.
There are twelve positions at increments of 30°.
1. Carefully turn the LCD indicator to the left to release it
from its holder.
2. Carefully turn the LCD indicator until the required position
is reached.
3. Insert the LCD indicator into its holder again and turn it to
the right into the required position until it snaps into place.
A10103
TTH300 | OI/TTH300-EN Rev. D 15