EL.CO. S.R.L. – ELK22MP
-
INSTRUCTIONS FOR USE
- Ver.05 - 03/22 - PAG. 5
the cables for the input sensors are kept away from power cords
and other power cables, in order to avoid induction of
electromagnetic disturbances. Output SSRs and inputs are not
electrically insulated. Connect on the input only insulated probes. If
some wiring harness cables are shielded, it is recommended to
connect them to one side on the ground. Finally, it is recommended
to check that the set parameters are the desired ones and that the
application works properly before connecting the outputs to the
actuators in order to avoid system abnormalities that could cause
damage to persons, things or animals.
4.4 – ELECTRICAL SCHEME CONNECTIONS
4.4.1 - ELK22MPS
4.4.2 - ELK22MPE
4.4.3 - ELK22MP e ELK22MPM
4.4 - ELECTRICAL SCHEME CONNECTIONS FOR ELK22DKP
(only for ELK22MP or ELK22MPM)
4.5 – CONNECTION FROM ONE DEVICE TO ANOTHER DEVICE
The ELK22MP series devices can be connected to each other via
the bus connector supplied as an accessory. (see Paragraph 10.6).
Slave devices must be connected to a centralization device to form
a sequence.
A devices sequence that have ELK22MPE as a centralizer
must consist of a centralizer device and a maximum of 1 to 31 slave
devices.
A devices sequence that have ELK22MPM or ELK22MP as a
centralizer must consist of a centralizer device and a maximum of 1
to 15 slave devices.
Two control units cannot be connected to each other via the
bus but must be considered as two distinct devices. Two control
units connected to each other via bus can cause a malfunction of
the product.
Be careful if you change the centralization device. If you switch
from an ELK22MPE to an ELK22MPM or ELK22MP centralizer, pay
attention to the number of ELK22MPS connected via bus.
4.6 – CONNECTION WITH TERMINAL RESISTOR
ELK22MP devices use RS485 via bus to communicate with each
other. In particular, the centralizing device communicates via bus
with the slave devices in order to program them.
The RS485 line requires a termination resistor to avoid
disturbances. This resistance, 120 Ohm, must be placed at the end
of an RS485 line. Through the connector (see paragraph 10.6) it is
possible to mount the termination resistor directly on the bus at the
end of the ELK22MP series device line.
The termination resistor is mandatory for the operation
of any RS485 line.
Terminating a line of ELK22MP series devices with the
connector (see Paragraph 10.6) and the 120 Ohm resistor gives
the possibility to terminate an RS485 serial line. The accessory
is already supplied with a 120Ohm resistor.
Resistor 120 Ohm
