Lenze EVS 9300 series - Motor Temperature Monitoring

Installation
Electrical installation
4.2.8 Motor temperature monitoring
4-32
L
EDSVS9332S-B EN 3.0
4.2.8 Motor temperature monitoring
Stop!
z Do not connect an external voltage to the terminals T1, T2. Otherwise the controller will be
damaged.
z Do not use the terminals T1, T2 for safety-relevant wiring. Fault messages via this input are
only processed after 2 s.
Selection of the
measuring sensor
• 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. In order to improve the monitoring, Lenze recommends the use of a
bimetal relay.
Alternative monitoring Usecomparators(CMP1...CMP4)todefinethemaximally permitted motor current (blocking c urrent) at low
speeds or when the motor is at standstill. The period of the blocking current can be limited by using a
downstream timing element (TRANS1, TRANS2).
This function can be implemented by interconnecting the corresponding function blocks.
Reactions Depending on the type of temperature monitoring, different reactions can be caused. (  9-221)
Connection of Lenze motors
Motors MDXKX, MDXQA and MDXMA Motors with thermal contact
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
Fault messages (MONIT-)OH3 (MONIT-)OH7 (MONIT-)OH8
Possible reactions
When selecting a motor via C0086, the following codes are preset:
P
o
s
s
i
b
l
e
r
e
a
c
t
i
o
n
s
• TRIP: C0583 = 0
• OFF: C0583 = 3
• Warning: C0584 = 2
• OFF: C0584 = 3
• TRIP: C0585 = 0
• Warning: 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: With Rϑ > 1600 Ω
Notes • Monitoring is active in the Lenze setting.
• When resolver (X7) and encoder (X8) are operated together, connect KTY
to X7 or X8 only. Do n ot assign the unused KTY connection.
• Further information about connecting a thermal sensor can be found in
the description of the feedback system
• Deactivate monitoring via X7 or
X8 under C0583 = 3 and
C0584 = 3.
• Connection is made to DIN 44081
(see Fig. 4-13).