Installation
4-28
BA9300SU EN 2.1
4.2.9 Motor temperature monitoring
Selection of the feedback
system
• Continuous temperature sensor KTY
–“Linear” temperature sensor in the motor winding (standard for Lenze motors MDXKX, MDXQA and MDXMA)
• Temperature sensor PTC
– PTC thermistor with defined tripping temperature (acc. to DIN 44081 and DIN 44082)
• Thermal contact TKO
– Thermostat/normally closed contact
Other monitoring KTY, PTC and TKO do not offer full protection. To improve the monitoring, Lenze recommends a bimetal relay.
Alternative monitoring Comparators (CMP1 ... CMP3) monitor and a time element (TRANS1 ... TRANS4) limits the motor current for small speeds or motor
standstill.
This function can be implemented by interconnecting the corresponding function blocks.
Reactions different, depending on the temperature monitoring.
^
8-15
Stop!
Do not connect an external voltage to the inputs.
Lenze motors Motors of other manufacturers
MDXKX, MDXQA and MDXMA with thermal contact with sensor for continuous
temperature detection
with thermal contact or
PTC acc.to DIN
44081/44082
Connection • Resolver input X7:
– Pin X7/8 = + ,
Pin X7/9 = -
• Encoder input X8:
– Pin X8/8 = + ,
Pin X8/5 = -
Terminals T1/T2 next to the
terminalsU,V,W
• Resolver input X7:
– Pin X7/8 = + ,
Pin X7/9 = -
• Encoder input X8:
– Pin X8/8 = + ,
Pin X8/5 = -
Terminals T1/T2 next to the
terminalsU,V,W
Fault messages (MONIT-)OH3 (MONIT-)OH7 (MONIT-)OH8 (MONIT-)OH3 (MONIT-)OH7 (MONIT-)OH8
Possible reactions
The corresponding monitoring and thus the following codes are preset under C0086
• Tri p
(C0583 = 0)
• OFF
(C0583 = 3)
• Warning (C0584
=2)
• OFF
(C0584 = 3)
• Trip (C0585 = 0)
• War ning
(C0585 = 2)
• OFF (C0585 = 3)
• Tri p
(C0583 = 0)
• OFF
(C0583 = 3)
• Warning (C0584
=2)
• OFF
(C0584 = 3)
• Trip (C0585 = 0)
• War ning
(C0585 = 2)
• OFF (C0585 = 3)
Tripping
temperature
fixed at 150 ° C adjustable
45°C ... 150°C
(C0121)
fixed, (depending on the
PTC/thermal contact):
PTC: at R
ϑ > 1600 Ω
fixed at 150 °C adjustable
45°C ... 150°C
(C0121)
fixed, (depending on the
PTC/thermal contact):
PTC: at R
ϑ > 1600 Ω
Notes • Monitoring is active in the default
setting.
• If resolver (X7) and encoder (X8) are
operated together:
– Connect KTY only at one connector
(X7 or X8)
– Do not connect KTY connection of
the other female connector
• For further information on the
connection of the thermal sensor,
please consult the description of the
feedback system
• Deactivate monitoring
via X7 or X8 under
C0583=3 and C0584=3
• Connection to DIN
44081
(see also Fig. 4-14).
• Input characteristic. (
^
4-29)
• Deactivate monitoring via X7 or X8
under C0583=3 and C0584=3
• Deactivate monitoring
via X7 or X8 under
C0583=3 and C0584=3
• Connection to DIN
44081
(see also Fig. 4-14).
• We recommend a Ziehl
PTC (up to 150 °C):
K15301075 or a
thermostat.
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