Voltage [V]
Frequency [Hz]
Motor rating [kW]
I
N
[A]
I
max
[A]
440
60
6.6
12.1
101
460
60
6.6
12.1
101
Tbl. 8:
Motor protection switch settings for global motor Hena 302
Voltage [V]
Frequency [Hz]
Motor rating [kW]
I
N
[A]
I
max
[A]
200
50
5.5
25.6
241
346
50
5.5
14.8
140
220
60
6.6
24.2
221
380
60
6.6
14.0
128
Tbl. 9:
Motor protection switch settings for Asian motor Hena 302
5.6.6 Frequency converter for vacuum pumps with three-phase motor
Rotary vane pumps with variable rotation speed can be operated within a mains frequency range of 35
to 60 Hz. Start-up is ramped (maximum run-up time: 30 s). Shutdown can take place immediately.
5.6.7 Connecting the PTC thermistor tripping unit
Tripping units store the shut-down
Pfeiffer Vacuum recommends connecting motors with PTC in the stator winding to a PTC
resistor tripping device for protection against overload.
N
L1
M
3
L2
L3
F1 - F3
K1
10
11
AC 220 ... 240 V
Us
F4
U
V W
S1
S2
k1
K1
H1
S3
2)
A1
A2
T1
T2
Y2
Y1
24
21
22
14
12
11
2)
2)
1)
1)
1)
T1...T3
3)
Fig. 15:
Connection example with PTC thermistor tripping unit
U
S
Control voltage
T1 – T3
PTC resistor sensor
S
1
OFF button
H1
Tripping indicator
S
2
ON button
M
Motor, 3-phase
S
3
RESET button
1)
For devices with two relay outputs only
K1
Contactor
2)
For MSR type (model) only
F1 – F4 Fuses
3)
Only for order no.: P 4768 052 FQ and P 4768 052 FE
Installation
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