Name: Basis; Date Chapter Section Page; Special Operations; Temperature Control - KEB COMBIVERT F5 MULTI Applications Manual

8.

Special Operations

8.1 Temperature
Control
8.1.1 Parameter
Description
Function (An.41, An.47)
Period (An.46, An.52)
Offset X (An.44, An.50)
Gain (An.43, An.49)
© KEB Antriebstechnik, 2002
All rights reserved
This function serves only as temperature control for watercooled inverters. The
water cooling system can be switched on with a pneumatic or solenoid valve.To
avoid pressure surges, the valves for a temperature control must be inserted before
the cooling circuit. All usual valves can be used. Depending on the used valve the
switching electronics must be provided by the customer. The control occurs via the
analog outputs 3 and 4 and the flags, which are assigned to the digital outputs. Two
functions must be programmed, because the temperature ranges of the inverter
and the motor are different. Attention! Do not use relay outputl
The respective functions are adjusted with these parameters (temperature control
of the power controller or the motor).
The period determines the cycle time in which the output is switched. The period
can be adjusted in a range from 1,0...240,0 s.
The heat sink temperature which shall be controlled is entered with Offset. The
temperature is in a range from 30 ∞ C...50∞C for inverters (heat sink temperature/
see power unit data) and in a range from 40∞C ...80∞C for motors. The adjustment
occurs in percentual values (1% = 1∞C).
The gain determines the max.temperature. The adjustment occurs via a factor and
is calculated as follows.
Max. temperature [∞C] = An.44 + (100% / An.43)
Example
Adjustments for the Controller
An.41 = 12 :
An.44 = 30 %
An.43 = 5,00
An.46 = 20 s
do.06 = 42 :
do.22 = 64 :
do.33 = 64 :
The switching period T
heat sink temperature is within the adjusted temperature range.
= (Max. temp.-setpoint temp.)+(heat sink temp.-setpoint temp.) ∑ Period
T
an

Name: Basis

KEB COMBIVERT F5
Special Operation
Power stage temperature
Beginning of the temperature control
Gain for the max. temperature, see formula above
Period (cycle time)
ANOUT3 PWM, switching condition 6
Selection for flag 6
Selection and assignment of the output terminal
of the output is calculated by the following formula if the
an
max. temp.-min.temp.
10.04.02
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