Parker EME
Setting up Compax3
192-120113 N08 C3I12T11 - December 2010
185
Reference point 2: Increased torque thanks to additional cooling
0
500
1000
1500
2000
2500
3000
0
0.5
1
2
2.5
3
3.5
S1 65°C DT
S3 50% 65°C DT
S3 20% 65°C DT
S1 105°C DT
[A]
[1/min]
2
2
I
0
n
2
I
2
rp2
I
0
:
Standstill current
1:
Nominal point
rp2: Reference point 2 (defined in the C3 ServoManager)
I
2
:
Reference current to reference point 2
n
2
:
Reference velocity to reference point 2
2:
Forbidden range
In order to monitor the continuous usage, the velocity-idenpendent current limit I
2
is
used.
If a r.m.s. current over the valid straight flows continually in the motor, the I²t
monitoring will issue the "effective motor current monitoring" error message
[0x5F48]. The period of time until the error occurs depends on the thermal time
constant of the motor defined in the motor parameters. The electronic temperature
monitoring simulates approximately the temperature behavior of the motor. By
defining a reference point different from the motor nominal data, the I²t monitoring
of the motor can be adapted to changed thermal ambient conditions (e.g. air
stream caused by a ventilator fan).
Relevant application parameters
In this chapter you can read about:
Switching frequency of the motor current / motor reference point ................................... 186
External Moment of Inertia ............................................................................................. 188
Limit and monitoring settings ......................................................................................... 189
Application parameters relevant for the control (C3 ServoManager)
Compax3 is configured with the aid of the C3 ServoManager. Here you can make
application dependant settings. Among these are also parameters, that are
relevant for the control. They will be explained below.