Bosch Rexroth Sytronix SvP 7020 IMC, Руководство по эксплуатации

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9 Operation
9.1 Injection molding control IMC
The SvP system operates a PGH internal gear pump. The pumped flow rate
results directly from the motor speed.
The used pumps are especially optimized for variable speed operation. The
pumps achieve low leakage at a high total efficiency and low noise load. De‐
pending on the application, sensors capture the pressure, cylinder position
and motor speed and send the captured values to the drive controller.
The drive controller compares these values to the command values set by
the control unit and adjusts the motor speed according to the system require‐
ments.
1 Control (command values: p
cmd
= pressure, Q
cmd
= flow rate)
2 Drive controller (control section, power section)
3 Motor
4 Pump
3 + 4 Motor-pump unit
5 Hydraulic system
6 Pressure transducer (p
act
= actual pressure value)
7 Encoder (n
act
= actual speed value)
Fig. 9-1: System overview
p/Q-control "p/Q-control" means "injection molding control" (p: pressure, Q: flow rate).
DOK-SYTROX-SVP7020-I*C-IT01-EN-P Bosch Rexroth AG 57/73
Sytronix SvP 7020 IMC Speed Variable Pump Drives
Operation