Siemens SINAMICS SL150 - Differential Pressure Measurement

3.3.2 Differential pressure measurement
Fundamentals
Differential pressure Δp expresses the pressure drop of the coolant between supply pressure
p
V
and return pressure p
R
of the drive. The coolant flow is set at the cooling unit to the calculated
flow.
Test procedure
1. The calculated flow is checked. It is permissible that the flow deviates by ±5 % from the
calculated value.
2. The differential pressure is read from the appropriate parameter on the test station
computer.
Calculations
The reference differential pressure is calculated from the measured values of the cooling unit:
Δp = p
V
- p
R
Result
The test is passed if the differential pressure Δp = 2.2 ±0.2 bar.
Tests
3.3 Cooling system test
SINAMICS SL150 6SL3865 F03 F70 F98 F79 F76
Reference Manual Rev.201902141427 SL150 wassergekühlt 29