Attention:
Running the motor with higher than allowed case pressure shortens the
service life of the motor.
Note:
The lifetime of the sealing may be improved with an accumulator, which
cuts the pressure peaks that are higher than the pre-charge pressure of
the accumulator.
Recommended pre-charge pressure is 2 bar and the displacement should
be about 25 % of the motor displacement. The accumulator should be
connected to the case drain line port as close to the motor as possible.
If motor is placed above the reservoir, add check valve with 1 bar (15 psi)
pressure to case drain line to ensure case oil fill. Maximum continuous
case pressure 2 bar.
Pilot pressure
BB motors
BBC motors
404VVVY2/340
C2V2E1Y0AA
405VVVY2/340
C3V2E1Y0AA
406VVVY2/340
C5V2E1Y0AA
407VVVY2/340
C5V7E1Y0AA
The pilot pressure is used to engage the options of the multi-speed motors.
The recommended pilot pressure is 15 to 30 bar and the maximum allowed pilot
pressure is 350 bar.
Attention:
Over 30 bar pilot pressure causes case pressure peaks. This effect should
be minimized with an orifice in the pilot line. Recommended orifice size is 1
mm.
Working line pressure
WORKING PRESSURE
The working pressure is the high pressure that generates the output torque of the
motor. The following values for the working pressure are in the technical data (see
on page 12):
• PEAK PRESSURE
The value of the peak pressure is the maximum allowed value of the working
pressure. Make sure the working pressure does not exceed this value under any
circumstances.
• INTERMITTENT PRESSURE
The value of the intermittent pressure is a permissible value of the working
pressure for a reference period of one minute (1 min). The working pressure may
exceed this value for 10 % of the time during the reference period (for 6 seconds).
MAXIMUM PRESSURE
Unless governed by the power limit, oil temperature or oil viscosity, the maximum
pressure is the maximum continuous work pressure.
4.5.2
4.5.3
System Design
42
Product Manual
Содержание BB 4
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