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© Copyright by BIFFI Italia. All rights reserved.
“ICON2000”
instruction and operating manual
Section 618/2 chapt. E
Section 618/2
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 chapter I, paragraph “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 250VAC/30VDC; max. current 5A;
Min. voltage 5VDC; min. current 5mA
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 250VAC; max. current 2A; min. switching capability
10microA, 10mVDC.
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 chapter I, “ESD control”.
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