User manual

18
ENG
MPXPRO - + 0300055EN rel. 1.3 07/03/13
2.12 Setting the default parameters/loading the
parameter sets
Introduction
Seven diff erent sets of parameters are saved in the MPXPRO memory.
Set 0, called the working set, contains the set of parameters used by
MPXPRO during normal operation. This set is loaded whenever MPXPRO
is started, and the parameters can be modifi ed at any time from the
terminal, supervisor, remote control, VPM and programming key.
The other six sets of parameters, numbered 1 to 6, contain other lists of
parameters, preloaded by CAREL during production, which can be copied
as desired to the working set (Set 0). These sets of parameters, unlike Set
0, can only be modifi ed using the programming key and the VPM. The
sets of parameters, once diff erentiated by the manufacturer of the unit,
can be loaded so as to rapidly set a list of parameters, with corresponding
values, to control the refrigeration system.
Parameter sets from 1 to 6 can be modifi ed as follows:
1. copy the parameters from MPXPRO to the programming key
MXOPZKEYA0 (UPLOAD);
2. read the parameters saved on the programming key using VPM;
3. selec t the set and modify the parameters using VPM. For each parameter,
the value, visibility, enabling to copy from Master to Slave, and
confi gurability at fi rst start-up can all be set;
4. write the parameters to the programming key using VPM;
5. copy the parameters from the programming key to MPXPRO
(DOWNLOAD). See paragraph 2.10.
Note:
• when copying the parameters from the key to MPXPRO and vice-versa,
MPXPRO must not be powered;
• to read/write the parameters on the key using VPM, the converter code
IROPZPRG00 is required.
Important: modifying the set of parameters saved in the MPXPRO
memory using the key permanently overwrites the parameters
set by CAREL. The set of default parameters is never overwritten,
being stored in a non-modifi able area of memory.
Procedure for setting the default parameters / loading
the parameter sets
Procedure:
1. power down the controller;
2. press the Prg/mute button;
3. power up the controller again while holding Prg/mute: at the end, the
number 0 is displayed, which represents set 0;
4. to load the default parameters, press the SET button to confi rm set 0,
otherwise see step 5;
5. press UP/DOWN to choose the set of parameters (from 1 to 6) to be
loaded as the working set, and confi rm by pressing SET;
6. at the end of the procedure, the display will show the message “Std”,,
indicating that the procedure has ended;
7. if required, run the guided commissioning procedure (see par. 4.3)
Note: the procedure loads a set of parameters as desired, from 1 to
6. The maximum number of parameter sets that can be loaded is limited
by the value of parameter Hdn, not visible on the keypad and only
modifi able using VPM or the programming key. For example, if Hdn=3,
during the procedure only parameter sets from 1 to 3 can be loaded on
the controller.
Par. Description Def. Min Max U.O:M.
Hdn Number of default parameter sets
available
006 -
Tab. 2.h