INTELLIBUS
Number : NR 1157
Revision : B
Page 11/19
Instructions for start-up
opening/closing/stop commands. The auto/on-off command is used to switch over from
one type of command to another.
ESD CLOSE, OPEN, STOP: the ESD (Emergency Shut Down) is an emergency remote
command, which overrides all other commands. According to the valve operation, the
emergency command will be an opening, closing or intermediate stop. This ESD
command is assigned to a Fieldbus command for auxiliary command 1 and assigned to a
hardwired (separate wiring) for auxiliary command 2.
Note: The hardwired ESD has a higher priority than Fieldbus ESD. The emergency
command is not possible when the local /remote selector is set to "OFF".
PARTIAL STROKE. This command performs automatically a test to confirm that the
actuator is still operational. The test consists to operate the actuator on a partial stroke
and return. The start position and the stroke % can be configured. An alarm is emitted if
the stroke is not performed in a predetermined delay. This delay is worked out from the
rated operating time.
RELAYS
The relays could be used to have an output indication (wired as a non fieldbus actuator) or
to drive outside devices through Fieldbus. These optional relays could be configured in
menu for actuator indication or output controls.
Function Block DO(2)
The same controls are available in various Function Blocks
Bit n°
Value
Description
Bit 0
0
No command
1
Open command
Bit 1
0
No command
1
Close command
Bit 2
0
Stop ( or maintained command mode)
1
No stop (or Pulse command mode)
Bit 3
0
No command
1
Auxiliary command 1
Bit 4
0
No command
1
Auxiliary command 2
Bit 5
0
Relay 1 contact open
1
Relay 1 contact closed
Bit 6
0
Relay 2 contact open
1
Relay 2 contact closed
Bit 7
0
Relay 3 contact open
1
Relay 3 contact closed