Connection schemes Sepam 1000+ series 40 - Trinet

MERLIN GERIN
MERLIN GERIN
MERLIN GERIN
Communication
Description and characteristics
E79288
Connection of the ACE949-2
Interface for 2-wire RS 485 network
RS 485
network
A
ACE 949-2
Implementation of the Modbus network
A set of adapted accessories is used for fast, dependable implementation of the
communication network from both the electrical and environmental (electromagnetic
compatibility) viewpoints.
V+
V-
L+
L-
E79287
1
2
E79289
RS 485
network
Connection of the ACE959
Interface for 4-wire RS 485 network
B
L-
L+
V- CCA612
V+
to
C
Sepam
ACE959
A
(1)
V-
V+
Rx+
Rx-
Tx+
Tx-
(1)
V-
V+
Rx+
Rx-
Tx+
Tx-
V-
V+
(2)
B
D
C
CCA612
to
Sepam
➀ Network connection interface, to be supplied by 12 V DC or 24 V DC distributed
power supply
# ACE949-2 for 2-wire RS 485 network
# or ACE959 for 4-wire RS 485 network.
➁ CCA612 cord for connection of the connection interface to the C port of the
Sepam base unit.
➂ Interface for connection of the RS 485 network to the Modbus master, with
distributed power supply to the ACE949-2 or ACE959 interfaces and polarization/
termination of the communication link
# ACE909-2, RS 485 / RS 232 converter
# or ACE919CA (110 V AC or 220 V AC) RS 485/RS485 interface
# or ACE919CC (24 V DC or 48 V DC) RS 485/RS 485 interface.
➃ Modbus network cable
# for 2-wire RS 485 network: two shielded twisted pairs
(1 RS 485 pair, 1 pair for power supply)
# for 4-wire RS 485 network: three shielded twisted pairs
(2 RS 485 pairs, 1 pair for power supply)
# with tinned copper braiding shielding, coverage: > 65 %
# characteristic impedance: 120 Ω
# gauge: AWG 24
# resistance per unit length: < 100 Ω per km
# capacitance between conductors: < 60 pF per m
# capacitance between conductor and shielding: < 100 pF per m
# maximum length: 1300 m.
Example of standard cable (for 2-wire RS 485 network):
# supplier: BELDEN reference: 9842
# supplier: FILOTEX reference: FMA-2PS.
High performance cable (for 2-wire RS 485 network):
# supplier: FILECA reference : F2644-1 (cable distributed by Schneider Electric in
60 m strand, reference CCR301).
For more information, refer to the "Sepam – RS 485 network connection guide"
PCRED399074EN.
4
3
Rx+, Rx-: Sepam receiving (eq IN+, IN-)
Tx+, Tx-: Sepam transmitting (eq OUT+, OUT-)
(1) distributed power supply with separate wiring or included in
the shielded cable (3 pairs).
(2) terminal block for connection of the distributed power supply
module.
Schneider Electric
29