Direct Digital Controller
150 Direct Digital Controller fw 4.013 – Ed. 01/2013
menu” , but only in “Event history”, where it constitutes a kind of “divider” between events prior
to it (which belong to a previous configuration, now modified, of the DDC) and those following it.
It is
possible that certain “ON” events which preceded a W1000 warning, and which still have such status at the
moment that the new configuration is carried out, may not have a corresponding “OFF” event.
W 1001
“Off-line” – Module off-line
This warning occurs for a specific module if communication between it and the DDC is interrupted
(connection problems, electric current not present for the module, etc.).
This warning is signalled in the
“Alerts menu” by the message “off-line”, while in the event history
it is indicated in a very similar way to a module error.
E 1002
“All mod. off-line” – All plant modules off-line
This error occurs if communication is interrupted between the DDC and all plant modules. It can be
generated only on the Master DDC (for Multi DDC plants).
E 1003
“High cooling temp.”– Cooling temperature above limit
This error only occurs for a cold plant (or for a two-line hot/cold plant currently in cooling mode), if the average
water temperature is higher than a settable limit (or if the average cannot be calculated for unforeseen
reasons). It may only be generated on a Master DDC.
Naturally, the machines are not switched off when
this error occurs.
E 1004
“Low heating temp.”– Heating temperature below limit
This error only occurs for a hot plant (or for a two-line hot/cold plant currently in heating mode), if the average
water temperature is lower than a settable level (or if the average cannot be calculated for unforeseen
reasons). It may only be generated on a Master DDC. Naturally, the machines are not switched off when
this error occurs.
E 1005
“RY and RW both ON” – RY and RW contacts both closed
This error occurs only for two-line hot/cold plants whose on/off command configuration allows the RY/RW
contacts to be used to determine the cooling/heating operating mode of the plant, if both contacts are closed.
This condition, if detected, is tolerated for a short period. It may only be generated on a Master DDC.
E 1006
“AmbT sensor fault” – DDC ambient temperature sensor fault
This error occurs solo for plants whose on/off command configuration allows the chronothermostat to be used
(independently of possible exclusion of the chronothermostat on the part of the user), if the ambient
temperature sensor of the DDC is faulty or not present (or returns values outside the operating range).
E 1007
“Config. conflict” – Configuration conflict on one module
This error is signalled for a specific machine module if a board with a known network ID is present
on the communication bus, among those under the control of the DDC, but with a configuration that
is different from that expected.
This may be caused by an S61 board-side modification to the configuration of a machine module
assigned to the DDC in question (without a machine configuration having been performed on the
DDC itself), or by the introduction on the communication bus of a new board whose ID conflicts
with one that is already present.
The latter case does not compromise the operation of the existing board.
Relevant elements, given a board ID, for identifying the conflict are: machine type, major firmware version of
board, module type major, and plant ID.
In the “Alerts Menu”, this error is indicated in the DDC’s own section, with the ID of the module in question
shown in the second line of the description; in the event history it is shown in a very similar way to a module
error.
E 1008
Master DDC off-line (“Master DDC off-line”)
This error is signalled if communication between the Slave DDC and its Master DDC is interrupted. It may only
be generated on a Slave DDC.
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