Flintec FT-13 - Manual (Page 9)

FT-13 Technical Manual, Rev. 1.40 March 2013 Page 9 of 56
4. I NSTALLATION AND C OMMISSIONING
PRECAUTION: Please read this manual carefully before energizing the indicator. Perform the commissioning
operation according the procedure given here. Use trained personnel for cleaning, commissioning, checking
and service of the indicator. The interference of untrained personnel may cause some unwanted damages or
injures.
4.1 Mechanical Installation
First of all please determine the place where your indicator can operate safely. This place should be clean, not
getting direct sun light if possible, with a temperature between -10 ºC and +40 ºC, humidity not exceeding 85%
non-condensing. Take care to the housing dimensions and the suggested panel hole dimensions given in
chapter 3.5. All the cables should be installed safely to avoid mechanical damages.
To avoid electrical noise protect your indicator which has very low input signal level from the equipment that
produces electrical noise, especially in panel mounting.
4.1.1 Jumpers
There are three jumpers on the instrument‟s main board/weighing board for calibration and for switching on/off.
To change the position of this jumpers, open the housing and perform the necessary changes before
energizing the indicator.
Figure 4.1 Main board
4.2 Electrical Connections
4.2.1 Power Supply and Grounding
FT-13 is available with 230 V AC power supply or 24 V DC or 12 V DC power inlet. The 230 V AC indicators
are supplied with a power cable; the DC indicators are supplied with a special connector for the power inlet.
Prepare your power voltage according to your instrument‟s power inlet. The DC connector pin configuration can
be found in Figure 4.2 below.
Definition
Pin no.
for desk and panel type
Pin no.
for stainless steel housing
24 V / 12 V 1 3
0 V 2 2
Housing Gnd 3 1
Figure 4.2 The pin layout of the DC connector
The quality of the instru ment‟s ground will determine the accuracy and the safety of your indicator. A poor
ground can result in an unsafe condition if an electrical short cuircuit happens. A good ground connection is
needed to minimize extraneous electrical noise pulses. It is important that the instrument does not share power
lines with noise-generating equipment such as heavy load switching, motor control equipments, inductive loads,
etc. If the condition of the power line in the plant is bad, prepare a special power line and grounding.
If you have to service the indicator, turn off the power and wait at least for 30 seconds before interfering.
All connectors are at the rear side of the housings of desk and panel types. The stainless steel housings must
be opened to make the required connections. These connections must be done as described below.
Desk / Panel
J2 Calibration
(short circuit for calibration)
J8 On/Off Switch
(always short circuit at the Panel type)
J17 short circuit for on/off key function