10c Baling pressure control

10c

Baling pressure control

- with active hydraulic system (Oil pressure switch Z17 and tailgate closed sensor B135)

Z17 B135

10c Baling pressure control ñ with active hydraulic system / with oil pressure switch Z17 and tailgate closed sensor B135

Key to diagram: Coordinates

A19 Variant module .......................................................Wiring loom A

B108 Baling pressure preset sensor ...............................Wiring loom A B135 Tailgate closed (and locked) sensor ............................not shown

X11 Connector ....................................................................not shown

Y50 Baling pressure build-up solenoid coil....................Wiring loom A

Z17 Tailgate open oil pressure switch.................................not shown Z70 Soft core actual value switch..................................Wiring loom A

Measured value table: Item Component Measured value

B108 Sensor

12 V 0.25 ñ 4.75 V B135 Digital sensor (0-I) 12 V 0.4 V ñ 4.6 V

Y50 Solenoid coil 3.8 A; 3.2 Ω Remark

(Pin 1 ñ 2) (Pin 1 ñ 3) Power supply (Pin 1-3) Signal (Pin 1-2) 0.4 V = LED dark = 0 4.6 V = LED bright = I See lettering

Description of function:

Pressure control Baling pressure control is provided by module A19. Depending on the preset baling pressure, solenoid coil Y50 is actuated in a modulated way. A high PWM modulation (approx. 100%) on solenoid coil Y50 results in a high effective voltage (approx. 12 V) at a low hydraulic pressure (approx. 0 bar).

Baling pressure modulation Baling pressure modulation is in accordance with the operating conditions of the machine.

1 Open tailgate: The tailgate closed / locked sensor (B135) is not detected. The pressure switch (Z17) opens at > 90 bar. With these signal inputs, module A19 controls the baling pressure solenoid valve (Y50) to 0 bar. Module A19 energizes solenoid coil Y50 with 100% PWM.

2. Close tailgate: The tailgate closed / locked sensor (B135) is not detected. The pressure switch (Z17) opens at < 90 bar. With these signal inputs, module A19 controls the baling pressure solenoid valve (Y50) to approx. 90 bar; module A19 energizes the solenoid coil Y50 with approx. 40-50% PWM. This active hydraulic system allows prestressing the belts as early as when closing the tailgate. (see also "Hydraulic System" documentation).

3. The soft core area has not yet been filled: The soft core switch Z70 is not actuated. Module A19 actuates solenoid coil Y50 with approx. 80% PWM. This results in a baling pressure of approx. 20 bar.

4. The soft core area is filled: The soft core switch Z70 is actuated (closed). Module A19 now actuates solenoid coil Y50 according to the set value preset on the baling pressure preset sensor B108 with 60% to 10% PWM. The resulting baling pressure is 30 to 180 bar.

Belt tension relief To relieve the tension of the belts, the baling pressure must be 0 bar. Here it is necessary to supplypower to the machine and to switch it on via switch T 12 on the terminal (see also relevant chapter in Operator's Manual).

Connector pin assignment:

Socket B135, B108 Socket Y50 Socket Z70

Interconnection list:

Connector mm Colour B108 - 1 0.75 br-rd B108 - 2 0.75 blk-rd B108 - 3 0.75 rd-blk

X11 - 1 0.75 blk-rd X11 - 2 0.75 bl-wt

Y50 - 1 0.75 br Y50 - 2 0.75 rd-wt

B135 - 1 0.5 br-rd B135 - 2 gr-wt B135 - 3 bl-rd

Z17 - 1 0.5 br-rd Z17 - 2 0.5 bl-gn Z90 - 1 0.75 gr-wt Z90 - 4 0,75 sw-rt