40
ENG
“EVD evolution” +030222041 - rel. 1.0 - 01.06.2008
pLAN error alarm
9.6
If the connection to the pLAN network is offline for more than 6s due
to an electrical problem, the incorrect configuration of the network
addresses or the malfunction of the pCO controller, a pLAN error alarm
will be signalled.
The pLAN error affects the control of the driver as follows:
case 1:
•
unit in standby, digital input DI1 disconnected; the driver will
remain permanently in standby and control will not be able to start;
case 2:
•
unit in control, digital input DI1 disconnected: the driver will
stop control and will go permanently into standby;
case 3:
•
unit in standby, digital input DI1 connected: the driver will
remain in standby, however control will be able to start if the digital
input is closed. In this case, it will start with “current cooling capacity”=
100%;
case 4:
•
unit in control, digital input DI1 connected: the driver will
remain in control status, maintaining the value of the “current cooling
capacity”. If the digital input opens, the driver will go to standby and
control will be able to start again when the input closes. In this case, it
will start with “current cooling capacity”= 100%.
LAN error alarm (for tLAN and RS485/
9.7
Modbus® driver)
If the driver used is fitted for tLAN or RS485/Modbus® connection to
a supervisor or other type of controller, no LAN error will be signalled,
and the situation will have no affect on control. The green NET LED will
however indicate any problems in the line. The NET LED flashing or off
indicates the problem has lasted more than 150 s.
