ROJ PCS 200, Original Instructions Manual

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General Information
PCS 200 Kit - 1.3 -
1.2 GENERAL INFORMATION AND PERFORMANCES
1.2.1 Introduction
The PCS 200 System has been designed to be applied on pneumatic and precision
seeders (falling within the scope of the EN 14018 norm) in order to replace the
mechanical transmission that drives the rotation of the seeding discs and the fertilizer
distributors with electrical engines, operated by their relative control system.
This replacement provides a higher machine flexibility and offers new capabilities
which cannot be obtained with the mechanical transmission.
The basic functions of the system can be summarized as follows:
•
Seeding disc speed control to deposit the seeds at a prescribed distance,
regardless of the advance speed of the tractor.
•
Control of the fertilizer and micro-granular distributor speed to distribute a
predefined mass per hectare of sown field
•
Monitoring of the seeding activity (seed sensor) in order to ensure a quality
job.
1.2.2 Functional blocks (Ref. Fig. 1-1)
The system consists of the following functional blocks:
•
ECU : Electronic control unit that manages the various on-board sensors of the
machine (speed sensor, proximity switch, etc.) and transfers to MDs both the
basic settings and the real-time information needed for sowing and fertilizing.
•
MD : Motor integrated drive, used to move the seeding disc or to rotate the
distributor of fertilizer and microgranular fertilizer.
o
An MD is associated to each seeding element, in order that the discs
speeds are fully independent.
o
One (or more) MDs for the distributors of fertilizer
o
One (or more) MDs for the distributors of microgranular fertilizer
•
HMI : Graphics console allowing the user to set up and read the data related to
the seeding activity, access diagnostic functions, and so on.
•
SDB 12+12 : 12V DC power supply unit with individual fuses (up to 24 motors).
•
SDB 3+3 : 12V DC power supply unit with individual fuses or fuses in pairs (up to
6 motors).
•
Alternator connected via a speed multiplier to the PTO (power take-off) and a
battery on board of the seeder, used to power up the motors in an independent
way with respect to the tractor battery.
•
Seed sensor : commercially available device consisting of an optical barrier
capable of detecting the falling seeds.
•
Machine position sensor to determine whether the seeder is lifted
(transport/manoeuvring position) or lowered (seeding position).
•
Speed sensor : radar or wheel speed sensor with commercially available
proximity switch which generates an incremental position (or speed) reference of
the tractor.
•
Cabling for the connection of the different devices