15
Biffi
ICON 2000
InstructIon and operatIng manual
5.6.2 output contacts
Standard version
- Monitor relay: on the terminal board, the
voltage-free, change-over contacts of the
monitor relay are available� The monitor relay
indicates that the actuator can be remotely
controlled or that there is a problem or
condition which prevents remote control of
the valve� The conditions that cause the relay
to switch over are listed in paragraph 9�1�6,
Output relays�
- AS1,2,3,4,5,6,7 relays: on the terminal board,
the voltage-free contacts of 7 latching relays
are available� The status (make or break) and
the conditions that cause the switching of the
relay can be viewed and configured by using
the “VIEW and SET-uP” features� The status
of the latching relays is immediately updated
as the associated conditions for change
occur� Moreover, the status of the above
contacts is cyclically updated (every second)�
- AS8 relay: a further voltage-free, change-over
contact is available on the terminal board�
The conditions that cause the switching of the
relay can be viewed and configured by using
the “VIEW and SET-uP” features�
- Contact rating:
Max� voltage 250 V AC / 30 V DC:
max� current 5 A�
Min� voltage 5 V DC:
min� current 5 mA�
Special version with highly sensitive gold-plated
contact relays supplied on request:
- Monitor relay: voltage-free, change-over,
gold-cap silver palladium contacts�
- AS1, 2, 3 relays: voltage-free, change-over,
latching, gold-cap silver palladium contacts�
- AS4 relay: voltage-free, latching, gold-cap
silver palladium contacts, configurable N�O�
or N�C� in the “Output relays” menu�
- AS5, 6 relays: voltage-free, change-over,
gold-cap silver palladium contacts�
- The conditions that cause the switching over
of the monitor relay and auxiliary relays
AS1���AS6 are the same of the standard
version and are configurable in the “Output
relays” menu�
- AS7, 8 relays: not available�
- Contact rating: max voltage 250 V AC;
max current 2 A; min switching capability
10 microA, 10 m V DC�
5.6.3 esd operation
An ESD (Emergency Shut Down) signal
can be sent to the actuator to override any
existing command and to drive the valve to a
predetermined position�
The control is not self-maintained, that is, the
ESD action continues until the relevant signal
is present� The “VIEW and SET-uP” features
can configure the polarity of the ESD signal,
the valve position after the ESD action and the
priority of the ESD function, as described in
paragraph 9�1�3, ESD control�
The ESD command is opto-coupled� The
circuits associated to the input can be
supplied by the internally generated 24 V DC
or by an external 20-125 V DC or 20-120 V AC
(50/60 Hz)�
The signal levels are the following:
- Minimum ON signal > 20 V DC or 20 V AC
(50/60 Hz)�
- Maximum ON signal < 125 V DC or 120 V AC
(50/60 Hz)�
- Maximum Off signal < 3 V�
- Current drawn from ESD controls < 15 mA�
warninG
If customers wish the motor thermostat to be
by-passed during ESD operation any certification
for actuator enclosure in hazardous area would
be invalidated.
5.6.4 interlock inputs
Two additional inputs are available to inhibit
actuator movement in open or close direction�
The controls are momentary, and the inhibit
action continues until the relevant signal
is present� The interlock controls work
when the local selector is in either LOCAL
or REMOTE positions� The ESD control
overrides the interlock controls� The “VIEW
and SET-uP” features can configure the
polarity of INTERLOCK signal as described in
paragraph 9�1�10, Interlock controls�
The interlock inputs are opto-coupled and can
be supplied by the internally generated 24 V DC
or by an external 20-125 V DC or 20-120 V AC
(50/60 Hz)�
The signal levels are the following:
- Minimum ON signal > 20 V DC or 20 V AC
(50/60 Hz)�
- Maximum ON signal < 125 V DC or 120 V AC
(50/60 Hz)�
- Maximum Off signal < 3 V�
- Total current drawn from remote controls
< 20 mA�
option d1)
option d2)
option e1)
option e2)
