User Manual

2
www.schneider-electric.com
Conext ComBox
865-1058
Copyright © 2014 Schneider Electric. All Rights Reserved.
All trademarks are owned by Schneider Electric Industries SAS or its affiliated companies.
DIN
rail
E2 Mounting to a DIN rail
35 mm
EN50022
F2 Daisy-chaining Modbus devices
NOTE:
Do not turn on the Conext ComBox by connecting a 24V  power supply
via the RS 485 connector until section H Turning On the ComBox.
D1
D0
Shield
Modbus
Device 2
Modbus
Device 3
24V 
Power
Supply
Connect the
RS 485 connector
to the RS 485 port.
See NOTE below.
Modbus
Device 1
Modbus
Device 4
Illustration only.
Common Ground is also required.
Devices vary and may not require
shielded wire.
RS 485
120
Terminator
RS 485
120
Terminator
NOTE:
 Use a two-wire twisted pair shielded cable (as shown) or
a two-wire twisted pair unshielded cable.
 Refer to local electrical codes and applicable installation codes and
regulations.
 Use smaller gauge wires when inserting two wires in one terminal
(see F2 Daisy-chaining Modbus devices).
 A common ground (0V) between all Modbus devices is required.
F1 Wiring the RS 485 connector
RS 485 CONNECTOR SPECIFICATIONS
16–24 AWG
(1.5 mm
2
–0.25 mm
2
) wire
2-wire serial, 19200 bps
(10 mm)
Strip wire by
Shield D0 D1
3
/
8
"
Terminate wires with ferrules then
connect wires to the connector.
Use a 2 mm slot-head screwdriver.
Do not overtighten.
F3 Wiring the Dry Contact connector
DRY CONTACT SPECIFICATIONS
16–24 AWG
(1.5 mm
2
–0.25 mm
2
) wire
NO Com NC
normally
closed
normally open
common
HAZARD OF ELECTRIC SHOCK AND FIRE
Failure to follow these instructions will result in death or serious injury.
DANGER
The Dry contact port must only be connected to a circuit rated 24V max, 4A max, and
supplied from an SELV source.
(10 mm)
Strip wire by
3
/
8
"
Terminate wires with ferrules then
connect wires to the connector.
Use a 2 mm slot-head screwdriver.
Do not overtighten.
0V