The mpx series controllers are the most complete and powerful range of electronic instruments for the control of multiplexed refrigeration units or systems made up of groups of units that need to operate in a "coordinated" manner.
mpx offers the following innovative features:
- advanced electronic technology
- excellent performance in the control of refrigeration units
- elegant appearance
- simplified manufacturing, in particular:
-- assembly and wiring, thanks to the use of Molex® quick connectors
-- setting of the operating parameters, by downloading the parameters to the instruments connected in a network
-- final testing of the refrigeration unit using an incorporated autotest procedure.
ADVANTAGES
Advantages
The extraordinary power and versatility of the mpx
series guarantees the final user the following functions:
- defrosts at set times, thanks to the clock (RTC) with battery
- possibility to manage, via the mpxLAN, multi-evaporator utilities (multiplexed
cabinets, cold rooms with a series of evaporators)
- standards compliance:
-- third multifunction probe (EN 441)
-- repeater display (EN 441)
-- recording of alarms (HACCP)
-- electrical safety (CE, EMC)
Advanced features
- alarm log: mpx saves any alarm signals (including
the time for the models with RTC);
- day/night operation;
- auxiliary or alarm relay;
- fan relay that can be used as an auxiliary;
- third multifunction probe;
- additional remote display to read a second temperature;
- 2 programmable digital inputs;
- self-diagnostic functions;
- sharing of controllers via mpxLAN.
Remote display
One important feature of the entire mpx range is the
ability to connect the remote display accessory.
By simply setting a parameter, the user can choose which probe to display,
allowing the reading of a temperature that is different from that shown
on the main display. In the event of instrument alarms, the remote display
shows the code "AL".
The remote display can be installed at a distance of up to 6 m and provides
IP65 index of protection .
HACCP (93/94/EU)
The HACCP procedures are designed to ensure that foodstuffs are correctly
stored until consumption. The mpx series, thanks to
the saving of the alarm log, provide a valid tool for compliance with
the standards in force.
Third probe
The European standard EN 441-13 defines the methods for measuring
the temperature in refrigeration units, in terms of accuracy, resolution,
range of measurement and time constant.
In addition, it provides precise indications on the positioning of the
temperature probe, so as to ensure the display of the "Hot point"
(which generally does not coincide with the control temperature).
The mpx series satisfies the requirements of this standard.
In particular, the control temperature can be maintained separately
from the "hot point" temperature displayed on the remote display
.
mpxLAN
The simple two-wire LAN connection, standard on the mpx
series, allows the creation of small local networks of instruments in
Master/Slave configuration (up to 6 units: 1 Master and 5 Slaves), so
as to co-ordinate the operation of a group of utilities. The internal
clock, the RS485 output for connection to supervisory systems (optional),
the configuration and the control functions can be shared by the Master
unit with the other instruments in the group (SLAVES). mpx can also be connected to a CAREL Supervisory System.
