9
Table 2
A11
A12
A60
A61
A72
K45
PTC
PTC
PTC
U
V
W
U
V
W
Thermometers
for
rolling-contact
bearings
Heater
U1
U2
V1
V2
W1
W2
DE
NDE
C1 C2 C1 C2 C3 C4
T1
T2
T3
T4
T5
T6
T1
T2
T7
T8
T3
T4
T9
T
10
T5
T6
T
11
T
12
T
13
T
14
T
15
T
16
P1 P2
T1
T3
T5
T1
T7
T3
T9
T5
T
11
T
13
T
15
Aux terminal Connection
If the motors are confi gured with the options A11, A12, A60, A61, A72 or K45, the
auxiliary terminal connection is shown in Table 2.
Protection
1LG0 motors have two types of electrical protection available as an option:
• PTC - used for temperature alarming or tripping function
• PT100 - used for alarming or tripping function
Note
:
Both the PTC and PT100 require connection to an external control unit.
Motors which are exposed to a wide temperature fl uctuation during standstill are
susceptible to condensation formation, hence it is strongly recommended that a space
heater be added.
When PT100s are used for bearing temperature monitoring, the alarming
and tripping values are independent of those of the winding class.
Warning!
Warning!
The space heater must never be energised during motor operation.
Warning!
Warning!
