Temperature Control - KEB COMBIVERT F4-F Applications Manual

Functional Description
6.8.6 Temperature
Control
Temperature switching time
(LE.70)
Set temperature (LE.71)
Max. temperature (LE.72)
Minimum temperature (LE.73)
Coolant warning (LE.74)
Used Parameters
R/W
PROG.
Param. Adr.
✔
LE.70 2B46h
✔
LE.71 2B47h
✔
LE.72 2B48h
✔
LE.73 2B49h
✔
LE.74 2B50h
Chapter Section Page
6 8 14
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!
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
(Max.temp.-set temp.)+(heat sink temp.-set temp.) . temperature switching time
=
T
on
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).
ENTER
min
- - 1,0 s 100,0 s
- - 20 °C OH-Temp.
- - 20 °C OH-Temp.
- - 20 °C OH-Temp.
- - 1 50
Date Name: Basis
19.05.99 KEB COMBIVERT F4-F
of the output is calculated with the following formula.
on
Max. temp.-min. temp.
Step
max
default
0,1 s 10,0 s
1 °C 40 °C
1 °C 50 °C
1 °C 30 °C
1 5
Special Functions
-
OH-Temp see power circuit
OH-Temp see power circuit
OH-Temp see power circuit
-
© KEB Antriebstechnik, 1999
All Rights reserved