5
4
2. Terminals at the control units KR 4 / KR7
L1 N
S1 S2 S3
PE PE PE
U V W
1 2 3 4 5 6 7 8 9 10
11 12 13
Mains (230V
olt) 50-60 Hz
Err
or message:
During operation S1 and S3 closed
By occurring of defects or net failur
el
S2 and S3 closed
3-phase AC motor (3x230 V
olt)
in delta connection
with standar
d motors 230/400 V
olt
+ 10 V
olt r
efer
ence voltage
Contr
ol signal 0-10 V
olt, 0-20 mA
4-20 mA
+
-
-
+
blue
Running check br
own black
Contr
ol unit r
elease
(external potential fr
ee contact closed
Thermostat r
elay motor
Optional: PTC-r
esistor motor
Operating r
epor
t:
in operation: 11 and 13 closed
when not in operation, with faults or
power failur
e 12 and 13 closed
14 15 U
a
L
Analogue Output FM
(0-10 Volt =)
Precedence freq. (for example:
antifreeze - summer identification
Optional:
0-20 mA 4-20 mA
0-10 V
There is a supply voltage of
24 Volt
=
on the contacts
5, 7, 9 (and optional 14)
3. Technical data
Controller typ
KR4
KR7
Output
0,4 kW
0,75 kW
Fuse (internal)
6,3 A delay (5 x 20 mm)
10 A delay (5 x 20 mm)
Mains voltage
220-240 Volt / 50-60 Hz 1~
Weight
3200 g
3500 g
Environmental temperature
from -10°C bis +40°C
(for temperatures lower than 0°C it is necessary to switch on the mains voltage to
the device without the motor running so that the controller can warm up)
temperature adjustment range
(only KR 4 Z / KR 7 Z)
Air supply temperature regulation 10°C - 40°C /summer switchover 18°C - 42°C
Other adjustment ranges must be specifically set
Type of protection
IP 54
Output frequency
0-120 Hz (factory setting 80 Hz)
Frequency resolution
0,08 Hz
Controller signal
0-10 V, 0-20 mA, 4-20 mA
Fault message relay
Potential-free changeover contact, 250 V AC, 1 A capacity
Motor connecting line
The connecting line must be shielded; chokes should be provided
for lengths of over 50 m. Please inquire!
Dimensions
L=256 mm B=232 mm H=128 mm
