TB0371 Setup of Beckoff EP7041 Stepper Controller

Tuning of EP7041 box is tricky, but following a step through telephone call with Etienne at Beckhoff, it was successful with the following steps

TB0371, EP7041, Stepper, Beckhoff

EP7041 Setup

Set up Remote Box CoE Online Tab

Parameter	Notes	ZX5 SY	AF2 SY	AF2 GY	AF2 GZ
8010 – 04	Motor Coil Resistance (Small Motor 28 [0.28Ohm])	28	36	36	36
8010 – 06	Motor FullSteps – always 200 for Beckhoff Steppers	200	200	200	200
8010 – 07	Encoder Increments – always 4096 for Beckhoff Steppers	4096	4096	4096	4096
8012 - 05	Speed range is max speed in motor steps, calculated from pitch, max speed etc. Needs to tie up with Ref velocity in NC Parameters – see below	2000	1000	1000	1000
8012 - 08	Feedback type Encoder feedback is best as it closes the loop. For open loop, use Internal, but this can loose steps / position	Encoder	Encoder	Encoder	Encoder

...Following Any CoE change you need to do Online reset for EtherCAT master [Right click on Devicenn] NCAxis setup

Axis Parameters (Under NC Task)

Parameter	Notes	ZX5 SY	AF2 SY	AF2 GY	AF2 GZ
Ref velocity	in user units – has to match speed range 8012:05. 2000 Steps/sec =50mm per sec on 10mm pitch, doubled for Centraliser with 200 steps/rev 2000/200	50	50	500	500
Max Velocity	Stuga Limit (less than Ref velocity)	15	25	100	100

Encoder Setup – Enc

Parameter	Notes	ZX5 SY	AF2 SY	AF2 GY	AF2 GZ
Numerator	Pitch of leadscrew	10	10	100	100
Denominator	Encoder counts per rev (if feedback is Encoder)	4096	4096	4096	4096
Scale			409.6	45.86	45.86
Note – the above two parameters will be overwritten by the Scale factor from the front end each time the front end is reset

...Activate the configuration at the end

en none 0

Draft