Lust CDA34.005 - Motor Temperature Monitoring

CDA3000 Operation Manual
3-5
3 Electrical installation
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Attention: If the inverter is operated as a controller with encoder (FOR
motor control method), motor phases U,V and W must
never be reversed! If the motor phases are reversed the
inverter has no control over the motor. The motor may buck or
accelerate in an uncontrolled manner (“race”).
Terminal box For proper EMC installation the motor terminal box must be HF-tight
(metal or metallized plastic). For the cable entry, packing glands with
large-area shield contact should be used.
Motor temperature monitoring For thermal monitoring of the motor coil, a thermistor (PTC) may be con-
nected to terminals X3/ϑ− and ϑ+. The type used must be set during
commissioning in parameter 330-MOPTC (factory default setting is "off").
(1) Thermistor (PTC)
(2)
Packing gland with shield
contact
(3) Motor phases
(4) Grounding lead connection
Figure 3.4 Motor terminal box
1
2
U
VW
U
VW
(1)
(2)
(3)
(4)
,

Sensor
Tech. data
No PTC
used
Standard
PTC
Linear
voltage evaluation
TSS -
Thermostatic
circuit-breaker
Usable type –
PTC to
DIN44082
KTY84, yellow Klixon
Parameter
330-MOPTC =
OFF DIN KTY TSS
Measured voltage
UMAX
– 12 V –
Measuring range – 100
Ω
to 15 k
Ω
–
Table 3.1 Motor temperature monitoring specification