Flintec KPFD-8 - Manual (Page 4)

Junction Box Type KPFD – Technical Manual, Rev. 1.02 December 2007 Page 4 of 4
O
UTPUT
C
ABLE
C
ONNECTION
The signal cable (connection between junction box and the following electronics) should be a 6 – wire
shielded cable (3x twisted pair cable, AWG24, and shield according DIN 47 100). The cable length should not
exceed 100 m. Depending on type and manufacturer signal cables may have different colours. Therefore
make your own choice.
Cable colour, example Description Terminal designation
white = Power supply + PWR+
grey = Power supply + PWR+
brown = Power supply – PWR–
pink = Power supply – PWR–
yellow = RS485 A A
green = RS485 B B
outer cable screen = Shield Schirm / Shield
R11
R10
R9
470 Ω
470 Ω
120 Ω
Insert jumper (JP)
at the last load cell.
In case of 8 load cells
no jumper.
R11
R10
R9
470 Ω
470 Ω
120 Ω
R11
R10
R9
470 Ω
470 Ω
120 Ω
Insert jumper (JP)
at the last load cell.
In case of 8 load cells
no jumper.
Figure 2: Wiring
Important Hints:
1. Verify the correct position of jumper JP (see figure 2).
2. If the connected weighing electronics has built-in RS485 termination (e.g. FlintWeigh, FT-11D, FT-16D)
then the resistors R9, R10 and R11 have to be removed (e.g by using a wire cutter).
P ROTECTIVE A CTION AGAINST M OISTURE
In the junction box you can also find a dry tablet in a plastic bag. Open the bag and leave the tablet in the
junction box. This will absorb moisture up to a certain degree.
Afterwards check the cover sealing against dirt and install the cover of the box. Fix the screws equally and
crosswise. If the installation takes places at humid weather, we recommend to use a blow-dryer or similiar to
dry the interior before the junction box will be closed.