Lenze 8400 HighLine - Manual (Page 273)

Lenze · 8400 HighLine · Referenzhandbuch · DMS 10.0 EN · 06/2014 · TD05/TD14
273
5 Motor control (MCTRL)
5.11 Encoder/feedback system
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
5.11 Encoder/feedback system
For the motor controls with speed monitoring the feedback signal can be supplied via an HTL
encoder at the digital input terminals (DI1/DI2 or DI6/DI7).

Danger!
• To avoid interference when using an encoder, only use shielded motor and encoder
cables.
• If an HTL encoder is used at the digital input terminals:
Observe the maximum input frequencies of the digital inputs!
• DI1/DI2: f
max
= 100 kHz ( from version 11.00.00: f
max
= 200 kHz)
• DI6/DI7: f
max
= 10 kHz

Note!
In the Lenze setting (e.g. when the device is delivered), the open-circuit monitoring of the
encoder is activated.  Encoder open-circuit monitoring ( 307)

Note!
The encoder position can be saved safe against mains failure in the controller.
• For this purpose, bit 0 must be set in C02652 . The actual position of the motor control
is then saved in the controller (not in the memory module) and thus remains known
to the drive control after mains switching.
 Option "Actual MCTRL position received at mains switch-off" ( 563)
• In case of a device replacement, this information gets lost and the home position
might be approached or set again once. A device replacement can be recognised by
using the SB LS_RetainData and a suitable function block interconnection.

Wiring diagram, assignment and electrical data of the digital input terminals can be
found in the hardware manual 8400 in the chapter "technical data". The hardware
manual is stored in electronic form on the data carrier supplied with the 8400 controller.