Lenze 931W - Manual (Page 17)

Technical data
Rated data
Internal brake resistor
3

17 GHB 13.0002-EN 3.1
Inputs and outputs and bus systems of type 931M
Digital inputs - standard I/O
1 input, 1 output
All inputs and outputs can be freely configured as
active HIGH or active LOW!
Digital inputs - local CAN, optional In connection with a function module only (projected;
 61).
More details can be obtained on request from Lenze
GmbH & Co KG, Kleinantriebe.
Cycle time of digital I/Os Adjustable via the scanning time (min. 500 μs). When
using the local CAN option, the cycle time < 5ms.
RS232
CAN (optional)
CANopen in accordance with DS301 and
DSP402standard
Profibus (optional) Profibus (Profidrive)
The control data is listed in the table below. For more information, please see the Software
Manual.
Control and regulation of type 931M
Control method
Torque, speed, following error and position control
Cycle time (current controller) ≤ 100 μs
Cycle time (speed, following error and position
controller)
Adjustable via scanning time (min. 500 μs)
Chopper frequency (PWM) 10 kHz
Max. output frequency 500Hz
Positioning range +/- 2 19 revolutions
Storable function data records 100
Encoder evaluation Resolver (12 bit internal resolution)
Monitoring Over/undervoltage,
motor and power stage temperature
3.3.2 Internal brake resistor
The 931M servo inverter in the 230 V supplyvoltage variantis providedwith an integrated
brake chopper and an integrated brake resistor which is designed for a continuous power
of 40 W
el
or for a short-time peak power of 200 W
el
. The extra-low voltage variants do not
feature an integrated brake chopper. The voltage threshold for the activation of the
internal brake chopper approx. is 375 V DC.
Internal brake resistor (230 V variant)
Resistance R [Ω]
550
Continuous power P
brake, el.
[W] 40
Peak power P
peak, el.
[W] 200
Mech. continuous braking torque * (n=3000 U/min.) [Nm] 0,2
Mech. peak torque * (n=3000 U/min.) [Nm]
0,8
* The information refers to the torque indicated on the motor shaft. In these values, the friction torque of the motor is
also considered!