12 Technical data
Maximum motor cable length for f
PWM
= 10 kHz
Characteristic
Value
Category C2
(control cabinet installation)
l
≤
25 m
See section 13.1
Category C3 (industrial environment) l
≤
25 m
Cable capacity
C‘
≤
160 pF/m of one phase against shield or
between two lines
Derating of the cable length
See also section 13.1.4
Operation with long motor cables
Characteristic
Value
f
PWM
= 12 kHz
l
≤
21 m
f
PWM
= 16 kHz
l
≤
15 m
Motor temperature monitoring system
Dangerous electrical voltage!
The signals for the temperature sensor "MT-" and "MT+" at the motor connector [X6]
must be connected to protective extra-low voltage (PELV) on the motor side and they
must be insulated against the motor phases.
Electronic overload protection of the motor
The servo drive has an electronic cut-out for overload protection combined with thermal
memory retention.
For an effective protection, the nominal motor current, maximum motor current and
overload time (I
2
t time) must be parameterised as described in the product manual.
Characteristic
Value
Sensor type
Analogue
Sensor type
Silicon temperature sensor PTC/NTC,
e.g. KTY84-130 or similar
Characteristic curve
Linear/non-linear, parameterisable (10 nodes)
Measuring range
from 300 Ω to 20 kΩ (+-10%)
Output voltage
+ 3.3 V
Output current
1.7 mA max. (via 2 kΩ measuring resistor)
Internal resistance
approx. 2 kΩ
Product manual BL 4000-C
Page 218 of 298