JVL MAC050 User Manual page 165

5.3 Expansion module MAC00-B41
5.3.8 RS485 - General description when using a MAC00-Bx module
The RS485 offers more noise-
immune communication com-
pared to the RS232 interface.
Up to 32 motors can be con-
nected to the same line.
The RS485 interface in the
MAC00-B41 module is gal-
vanic isolated.
When connecting the RS485
interface to a central control-
ler, the following rules must
be followed:
1: Use twisted-pair cable
2: Use shielded cable
3: Ensure that GND is also
connected.
4: Ensure that all units have a
proper connection to safety
ground (earth) in order to re-
fer to the same potential.
5: The last unit in each end of
the network must be termi-
nated. Note that the B1, B2
and B4, B41 modules all con-
tain a termination resistor
which can be activated.
6: Ensure that the supply lines
are connected individually in
order to minimise the voltage
drop between the motors.
7: Master Controller RS485
interface:
If available, it is strongly rec-
ommended a type with opti-
cal isolation is used.
Connectors:
To see the specific connector
pin-out please see the chapter
Expansion MAC00-B41 con-
nector description, page
A finished RS485 cable also
exist. Please see
MAC00-B41, page 171
JVL A/S - User Manual - Integrated Servo Motors MAC050 - 4500
RS485 network with 2 x MAC140 and 1 x MAC400
mounted with MAC00-B1, B2, B4 and B41 modules.
(for example a PC)
169.
* Opto isolation is recommended.
Cables for the
** The last unit at each end of the line must be terminated. The MAC00-B1, B2
and B4, B41 contain this feature. See the individual module descriptions.
*** Each unit connected must be setup with an address via The MacTalk program.
If only one unit is connected no address is needed.
Central
Make sure that all
involved units are
Controller
connected to the same
potential
Opto isolation *
**
Screen connected
to GND in each end
MAC50-141
with B1, B2 or B4
*** Address=1
A
RS485
B
Interface
GND
Power
Supply
Control voltage
Only MAC50-141
with B2 or B4
MAC50-141
with B1, B2 or B4
*** Address=2
A
RS485
B
Interface
GND
Power
Supply
Control voltage
Only MAC50-141 with
B2 or B4 (Optional)
MAC800 Motor
with MAC00-B41
*** Address=3
A
**
RS485
B
Interface
IGND
Power
Supply
Contr. Voltage CVI
Main supply
Up to 32
Motors
Only MAC400 to 4500
Power supply
P+
P-
O+
P+
P-
O+
ON
ON
To activate
the termination
set dip 9+10 in
position "ON"
P+
Max. 32VDC !
P-
Mains 230VAC
TT1144GB
161