Check Before Commissioning; Design Of Water Cooling - LinMot P01-48 EX Installation Manual

Installation Guide Linear Motors

4.7 Check before commissioning

Prior to commissioning, important components should be tested. See the table below.
When
Prior to
commissioning

4.8 Design of water cooling

This paragraph relates to the ATEX linear motor versions with liquid cooling (motor identification numbers
with the suffix –FC).The heat produced by the motor is dissipated by the liquid cooling. If the motor is
operated with a liquid-cooling, the continuous force value increases many times in comparison with the self-
cooling.
T_Flow: Flow temperature
T_Back: Return temperature
ΔT:
T_Back-T_Flow
T_Water: (T_Flow + T_Back) / 2 (Mean coolant temperature)
Q_Water: Flow
Δp:
Differential pressure
With the water cooling, the coolant is passed through the cooling circuit of the motor flange.
Starting from the adjusted mean coolant temperature T_Water all other parameters of the cooling circuit may
be dimensioned based on the diagrams referred to:
•
T_Water -> Pv_Max (Continuous power dissipation) -> Q_Water -> Δp
The design is illustrated by an example in the following.
Page 26 / 40
What
Electrical
connection
Tightness
Ease of movement
P01-48 EX protected
Tighten the plug thread.
(Torque 5 Nm)
Check that external bearings are securely threaded onto
the stator with no gap.
(Torque 6 Nm)
Align the motor for load attachment so that the slider can
move freely.
ENG
Task
NTI AG / LinMot