12 t, Raffic, Ight – Flintec FT-15D User Manual
Page 41: Ontrol
FT-15(D) Technical Manual, Rev. 1.02 August 2010
Page 41 of 52
12 T
RAFFIC
L
IGHT
C
ONTROL
If the instrument is equipped with the Digital I/O option (3 inputs / 3 outputs) the traffic light control is activated
automatically. FT-15(D) assumes an unloaded weighbridge if the weight is less than 20e.
Traffic light control outputs functions are described below:
Output-1 Output-2
Active
Passive Active Passive
Ready for start,
weight < 20e
Entrance green
Exit red
Vehicle on scale;
weight > 20e
Entrance red
Exit red
Weighing finalized;
weight > 20e
Entrance red
Exit green
Weighing finalized;
weight < 20e
Entrance green
Exit red
Input-1 may be used for zeroing and Input-2 may be used for printing in ready status.
The electrical connection of the inputs and outputs should be made as shown in Fig. 12.1.
Figure 12.1
Digital I/O ports connection diagram
Voltage Current
Digital input
20 to 28 V DC
Max. 30 mA
Digital output
20 to 28 V DC
Max. 300 mA (sum of all 3 outputs)
The power for the digital I/O has to be supplied from an external power supply module.
The pin layout of the parallel Input/Output connector is given below.
Pin no. for stainless steel housing
Definition
Pin no. for desk type
(DB-Sub, 25-pin, female)
J10 connector
(Option 1)
JR1 / JR2 (Option 2 or 3)
0 V
13
1
1
+24V
12 - 24 - 25
2
2
Output 1
1
7
8
Output 2
3
8
7
Output 3 (not used)
5
9
6
Input 1
11
3
10
Input 2
10
4
11
Input 3(not used)
9
5
12
Shield
Connector Body
Not used
Not used