User manual

14
ENG
MPXPRO - + 0300055EN rel. 1.3 07/03/13
2.6 Functional diagrams
The MPXPRO controllers are systems that manage refrigeration units (for
example, one or a series of multiplexed showcases). These systems are
made up of control boards connected together in Master-Slave mode;
each Master board can manage up to 5 Slaves. The functional diagrams
below show some examples of typical applications:
1. Stand alone con guration and optional cards
available
AUXAUX
master
MX2OPSTP**
MX2OPPWM**
MX2OPA1002
MX2OP48500
(only for MX20S*****)
tLAN
IR00XG*300 IR00UG*300
3
RS485
3
MPXPRO
High
voltage
Fig. 2.j
For the electrical connections see the general connection diagram in par.
2.8.
The Master controller can be supplied without the driver board
(MX30M00E00), with the driver board for E2V valve (MX30*25E00) or with
PWM driver board (MX30*24E00).
Available options:
• 0 to 10 Vdc expansion board (MX3OPA1002). If installed, the drivers
cannot be fi tted: in this case the driver board with the 0 to 10 Vdc
output incorporated;
• on MPXPRO Slave boards (MX30S*****) the RTC and RS485 serial
interface accessory (MX3OP48500) can be added)
2. Master/ Slave network with user terminals and remote
display
The Master controller, connected to the supervisor network, acts as
the gateway and coordinates the functions of the 5 Slave controllers
connected in the tLAN. Each controller has its own user terminal and
remote display.
AUX
AUX
AUX
AUX
slave 1
master
slave 2 slave 3 slave 4
AUX
AUX
AUX
AUX
AUX
AUX
tLAN 2
MPXPRO
High
voltage
MPXPRO
High
voltage
MPXPRO
High
voltage
MPXPRO
High
voltage
MPXPRO
High
voltage
slave 5
AUX
AUX
MPXPRO
High
voltage
RS485
PlantVisorPRO/
PlantWatchPRO
per supervisione/
for supervision
tLAN 3
3
tLAN 3 tLAN 3 tLAN 3 tLAN 3 tLAN 3
Fig. 2.k
For the electrical connections see the general connection diagram in par.
2.8.
3. Master/Slave network with shared user terminal and
local remote display.
AUXAUXAUXAUXAUX
slave 1
master
slave 2 slave 3 slave 4
tLAN 2
MPXPRO
High
voltage
MPXPRO
High
voltage
MPXPRO
High
voltage
MPXPRO
High
voltage
MPXPRO
High
voltage
slave 5
AUX
MPXPRO
High
voltage
RS485
PlantVisorPRO/
PlantWatchPRO
per supervisione/
for supervision
tLAN 3
3
tLAN 3 tLAN 3 tLAN 3 tLAN 3 tLAN 3
Fig. 2.l
For the electrical connections see the general connection diagram in par.
2.8
4. RS485 supervisor network
The maximum number of Master controllers that can be connected in
the network also depends on the number of Slaves connected to each
Master; the maximum total is 199 controllers (CAREL and Modbus®
protocol).
MPXPRO
High
voltage
MPXPRO
High
voltage
MPXPRO
High
voltage
PlantVisorPRO/
PlantWatchPRO
per supervisione/
for supervision
master 1 master 2 master n
RS485
3
Fig. 2.m
For the electrical connections see the general connection diagram in par.
2.8.
2.7 Connecting the MCHRTF**** module
The connection of the MCHRTF**** single-phase speed controller for
evaporator fans requires a resistor in series, as shown in the following
fi gure:
4 A
R=470Ω
12 V
PWM
control
signal
230 Vac
50 Hz
MCHRF module
PWM1
PWM2
L N
M
LOAD
19 18 17
Fig. 2.n