Kampmann TOP EX Series, Инструкция по сборке, установке и эксплуатации, Страница: 22 / 36

TOP [EX]
Assembly, installation and operating instructions
22
7 Electrical connection
IMPORTANT NOTE!
Motor protection
Motor protection is provided by PTC thermistors embedded in the motor windings. The PTC thermistors are
monitored by electronics in the stage switch type 30351. The stage switch is switched off as soon as the
motor heats up unacceptably. The motor is thus protected against overload operation, failure of a mains
phase, over- and undervoltage, unacceptably high ambient temperature, and the rotor jamming. The ther-
mistor relay in the stage switch detects the change in resistance of the PTC in line with the temperature.
Then the stage switch evaluates this and switches off the motor. Therefore only use stage switch type
30351. The use of other switches is not permitted.
The three-phase external rotor motor can be switched between two stages using a 2-stage three-phase
switch type 30351 (Y/Δ configuration).
Switching stage 1: star configuration
Switching stage 2: delta configuration
The fans are operated with a clockwise rotating field! Important! Operation of this unit with frequency in-
verters is prohibited!
Wiring the PTC
Lay a separate cable for the PTC.
Lay this line separately from power lines.
Lay a shielded line if the line is longer than 10 m.
Parallel connection of unit heaters: A maximum of two unit heaters can be connected to a stage switch.
The motor windings are switched in parallel.
The PTCs are switched in series on the stage switch.
If only one unit heater is connected, insert a jumper on the right KL terminals as per the wiring diagram.
M
3 ~
M
3 ~
SH
SH
U
1
V1 W
1
U
2
V
2
W
2
PE
KL KL
-M1
U
1
V1 W
1
U
2
V
2
W
2
PE
KL KL
-M2
P
A
P
A
U1 V1 W1 U2 V2 W2 TK TK TK TK PE PE PE
U1 V1 W1 U2 V2 W2 K1 K2 PE PE
-X1
U1 V1 W1 U2 V2 W2 K1 K2 PE PE
-X2
44xx37 D / Y 400 V
45xx37 400 V
46xx37 400 V
47xx37 400 V
140 / 120 W
290 / 230 W
310 / 230 W
440 / 320 W
0,27 / 0,20 A
0,60 / 0,41 A
0,60 / 0,40 A
0,80 / 0,52 A
D / Y
D / Y
D / Y
Step switch, type 30351
Equipotential bonding
(provided by the customer)
Outside Ex zone
Ex zone 1 or 2
Ex version of unit heater Ex version of unit heater
Power consumption
Changeover Voltage Current Output Size
Fig. 9: Wiring diagram