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6
8
KEB COMBIVERT F4-F
14
Name: Basis
19.05.99
Chapter
Section
Page
Date
©
KEB Antriebstechnik, 1999
All Rights reserved
Functional Description
Special Functions
6.8.6
Temperature
Control
This function serves as temperature control for water-cooled inverters. The cooling
system can be controlled by a solenoid valve. Dependent on the used valve, the
control circuit must be made available by the customer. The control is activated via
the transistor output (do.1...do.8 value „34“ see „digital outputs“ chapter 6.3.10) of
the KEB COMBIVERT.
Attention! Don’t use relay output!
Temperature switching time
(LE.70)
The temperature switching time defines the cycle time for the output. This time can
be adjusted in a range of 1,0...100,0 s (standard 10 s).
The heat sink temperature is preset with LE.71. This temperature can be adjusted in
a range of 20 °C...OH-temperature (see power circuit data) (standard 40 °C).
The output is generally set, if the heat sink temperature exceeded the max. temperature
adjusted in LE.72. LE.72 can be adjusted in a range of 20°C...OH-temperature (see
power circuit data) (standard 50 °C).
The output is generally switched off, if the heat sink temperature is below the min.
temperature adjusted in LE.73. LE.73 can be adjusted in a range of 20°C...OH-
temperature (see power cicuit data) (standard 30 °C).
If the heat sink temperature is inside the adjusted temperature limits of LE.72...LE.73,
the connecting time T
on
of the output is calculated with the following formula.
T
on
=
(Max.temp.-set temp.)+(heat sink temp.-set temp.)
.
temperature switching time
Max. temp.-min. temp.
Set temperature (LE.71)
Max. temperature (LE.72)
Minimum temperature (LE.73)
Coolant warning (LE.74)
A digital output can be set (do.1...do.8 = „35“), if the heat sink temperature exceeds
the max. temperature (LE.72) with the adjusted prewarning time. The prewarning
time is calculated as follows:
Prewarning time = temperature switching time (LE.70)
·
coolant warning (LE.74)
Coolant warning (LE.74) can be adjusted in a range of 1...50 (standard 5).
Param
.
Adr.
min
max
default
ENTER
PROG.
R/W
Step
Used Parameters
LE.70
2B46h
✔
-
-
1,0 s
100,0 s
0,1 s
10,0 s
-
LE.71
2B47h
✔
-
-
20 °C
OH-Temp.
1 °C
40 °C
OH-Temp see power circuit
LE.72
2B48h
✔
-
-
20 °C
OH-Temp.
1 °C
50 °C
OH-Temp see power circuit
LE.73
2B49h
✔
-
-
20 °C
OH-Temp.
1 °C
30 °C
OH-Temp see power circuit
LE.74
2B50h
✔
-
-
1
50
1
5
-