Fancom 771
INSTALLER: 4. Mounting and installation
5
Commands are sent to the stations (ILM.1, IRM.16, etc.) and data is received from the 771 dry feed
computer via a 2-core network. The network has the so-called Back Bone structure. Two cores leave a
station (including the 771) and go to the next station. From this station the cores go to the following
station etc. The Back Bone-wire must never be cut at the point where a station is connected. The
insulation must be removed, the wire folded double and placed under the terminal.
Connect a resistance of 120
Ω
parallel to the communication connection at the first and last station. Use
an unshielded 2-core telephone wire (twisted pair).
Connect the communication network according to the connection diagram concerned in appendix 1.
After the 771 dry feed computer and the stations have been built up, the dry feed unit and the
equipment can be connected electrically to the computer system. All the parts will be discussed
separately in the following sections.
A frequently used weighing bar in dry feed units is the 100kg weighing bar. Connect the weighing bar(s)
according to the diagrams concerned in appendix 1.
Caution
Ensure the weigher is mounted stably so that a (possible) blender has a minimum
influence on the weight of the weigher. The dosing out unit, the dosing in and dosing
out augers must not touch the weigher.
4.2 Connection of the communication network between the different modules
4.3 Mounting and connecting the equipment
4.4 Connecting the weighing bars
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