ABB DCS 400 - Page 153

II K 6-31
Operating Instructions
Alarm message
Alarm no.
Definition /
Possible source
Param.
A 7 Field Volt Limited Alarm Field Voltage at Limit
This alarm is issued if the field
voltage reaches the value that
was set in Parameter Field Volt
Nom (1.04) and therefore the
field current cannot be set to the
required value.
Please check the resistance and
the temperature of the field and
the Parameters Field Cur Nom
(1.03) and Field Volt Nom
(1.04).
7.12
bit 6
A 8 Mains Drop Out Alarm Main Voltage Drop Out
DCS 400 is equipped with an
„Auto Reclosing“ that allows for
a continous operation after
short-time mains dropout (pro-
vided that the power supply for
the controller is not interrupted).
If the mains voltage comes back
within the time period that was
set in Parameter Net Fail Time
(1.11). This alarm will automati-
cally be reset if the mains volt-
age comes back within that pe-
riod, otherwise the relevant
faults are issued (F9, F11, F12).
7.12
bit 7
A 9 Eme Stop Pending Alarm Emergency Stop
This alarm is issued if the emer-
gency stop bit from Fieldbus
communication is missing or if
the digital input DI5 „Emergency
Stop“ is not set to „high“.
Please check the digital input or
the condition of all related emer-
gency stop buttons. Also, if the
control is done via Fieldbus de-
vice, please check the situation
of the Fieldbus control program
or the communication state of
the Fieldbus. If Parameter Cmd
Location (2.02) is set to „Field-
bus“, a Fieldbus device must be
connected and selected in Pa-
rameter Group 8.
7.12
bit 8
Alarm message
Alarm no.
Definition /
Possible source
Param.
A 10
Autotuning Failed
Alarm Autotuning Failed
• If any autotuning fails dur-
ing
Commssioning Wiz-
ard
press
MENU
or
ENTER
to see the con-
cerning diagnosis mes-
sage. For detailed diagno-
sis information please refer
manual chapter 6.4.7.
Press
ENTER
to continue.
Note
: Any
Fault
during
Commissioning Wizard will
cancel
the
Wizard
. Then
read out parameter
Diag-
nosis (7.03)
manually and
also the
Fault Logger
for
more information. Could be
there is more than one
fault.
• If autotuning fails started by
Contr Service (7.02)
press
MENU
or
ENTER
and se-
lect
Diagnosis (7.03)
to
see the concerning diagno-
sis message. Refer chapter
6.4.6 also.
For further information see also
chapter 6.3 Useful hints for
Commissioning.
7.12
bit 9
A 11
Comm Interrupt
see also
F20
Alarm Communication Inter-
rupt
If the Parameter
Cmd Location
(2.02)
is
not
„Fieldbus“, this
alarm is issued instead of F20, if
no message have been recieved
for a period longer than the time
which has been set in Parame-
ter
Comm Fault Time (2.08)
.
Please check the connection of
Fieldbus cable and check the
function of all Fieldbus devices
according to the values in Pa-
rameter
Group 8
7.12
bit 10
A 12
External Alarm
see also
F22
Alarm External Alarm
This alarm can be issued by the
customer via one of the digital
inputs if the selected macro of-
fers this function. There is no
problem with the drive itself!
In case of problems please
check the logical level and the
connection of the circuit that is
connected to the related digital
input.
7.12
bit 11
A 13
ill Fieldbus Setting
Alarm illegal Fieldbus Setting
The Fieldbus parameters in Pa-
rameter
Group 8
are not set
according to the Fieldbus de-
vice. The device has not been
selected.
Please check the configuration
of the Fieldbus device and set
all related parameters in Pa-
rameter
Group 8
accordingly.
7.12
bit 12