Serial Rs-232 Connection; Recommendation For Wiring - Technosoft iPOS80x0 BX-CAN Technical Reference

where t is the time interval between 2 voltage increase cycles in case of repetitive moves.
CYCLE
4. to be rated for an average power
Remarks:
U U
>
MAX CHOP
1. If
×
I 2
PEAK
or C – the external capacitor on the motor supply
×
P t
CR d
2. If
×
2
t I
CYCLE NOM
interval between chopping cycles must be increased
WARNING!
3.4.8

Serial RS-232 connection

3.4.8.1 Serial RS-232 connection
3.4.8.2

Recommendation for wiring

a) If you build the serial cable, you can use a 3-wire shielded cable with shield connected to BOTH ends. Do not
use the shield as GND. The ground wire (pin 1 or 4 of J9) must be included inside the shield, like the 232Rx
and 232Tx signals. All metallic connector shells are connected internally to the Earth connector J1 pin 4.
b) Always power-off all the iPOS80x0 BX-CAN supplies before inserting/removing the RS-232 serial connector
c) Do not rely on an earthed PC to provide the iPOS80x0 GND connection! The drive must be earthed through a
separate circuit. Most communication problems are caused by the lack of such connection
CAUTION!
 Technosoft 2019
R
P
=
CR
P
AV
t
CYCLE
2
the braking power P
P
CR
2
U
>
CHOP
either the braking power must be reduced (see Remark 1) or t
×
2 P
CR
THE CHOPPING RESISTOR MAY HAVE HOT SURFACES DURING
OPERATION.
Figure 3.23. Serial RS-232 connection
Do NOT CONNECT/DISCONNECT THE RS-232 CABLE WHILE THE
DRIVE IS PWERED ON. THIS OPERATION CAN DAMAGE THE DRIVE
×
P t
>
CR d
×
CR
2
t I
CYCLE NOM
×
t
d
and a peak power
must be reduced by increasing either t
CR
28
2
U
=
MAX
P
PEAK
R
CR
– the time to decelerate
d
iPOS80x0 BX-CAN/-CAT Technical Reference
– the time
CYCLE