socomec DIRIS Ap Notice D'utilisation page 37

NB :
The lifetime of this relay is 10
tions.
Recommendations:
You should use a shielded twisted pair
(LIYCY type). In a disturbed environ-
ment or large network (in terms of
length) we recommend the use of 2
shielded pairs (type LIYCY-CY). In this
case, one pair is used for the + and
the –, and another pair, where the 2
wires are short-circuited, for the 0 V.
A repeater (1 channel) or an arrestor
(4 channels) should be used if you
intend to exceed the distance (1500
m) and/or maximum number (31) of
Diris. Please contact us for more
information.
NB :
A 120 ohm resistance (found on the
additional module) must be fixed at
both ends of the link.
Other solutions are available (modem,
optical fibre, etc.). Please contact us
SOCOMEC - Ref. : 875 510A
PULSE OUTPUTS
2 reed relays (100 V - 0.5 A - 10 VA)
8 opera- available on the Diris Ap provide a
pulse for active, reactive and appa-
rent energy. Values and duration can
be programmed (see § program-
ming).
COMMUNICATION
For standard configurations, an
RS 485 link is used to connect up to
31 Diris Ap with a PC or a PLC over
a distance of 1500 metres, using
JBUS/MODBUS
Programmable
controllers
Other systems
Programmable
controllers
Other systems
© protocol.
R = 120 Ω
N° 1
1500 M
R = 120 Ω
N° 1
(ADDITIONAL MODULE)
(ADDITIONAL MODULE)
1500 M
N° 2 N° n
R = 120 Ω
1500 M
0+- -+0
repetor N° n
R = 120 Ω
RS485
37