Masoneilan SVI II ESD, Installation And Maintenance Manual

Page: 135 / 220

Masoneilan SVI II ESD Installation and Maintenance Manual =
|
135
© 2017 Baker Hughes, a GE company, LLC. All rights reserved.
Switch Settings
The two digital output switches can be opened or closed in response to conditions that the SVI
II ESD detects (only one switch is configurable for the ESD). These conditions are:
0. Always Normal Position - the switch is not controlled by the SVI II ESD
and remains in it’s default position. The two digital output switches
can be opened or closed in response to detected conditions. The
default configuration setting is
Always Normal Position , where nor-
mal is closed, which means that the switch will not switch for any
valve travel. To activate the switch at a given valve position, config-
ure the switch
Position Low Limit or Position High Limit .
1. Failsafe - the switch is activated when the SVI II ESD is in failsafe
mode
2. Reset - the switch is activated whenever a reset has occurred and
the switch remains activated until the SVI II ESD status is cleared
3. Position Error - the switch is activated whenever a position error has
occurred and is deactivated when the position recovers to the cor-
rect position
4. Tight Shutoff Active - the switch is activated whenever the device is
in tight shutoff (tight shutoff is on and the valve position is less than
the tight shutoff position)
5. Position Low Limit - the switch is activated whenever the valve posi-
tion is less than the position setting of this switch control
CAUTION
If both Position Low Limit and Tight Shut Off are used, the Position
Low Limit
must be above the Tight Shut Off.
6. Position Upper Limit - the switch is activated whenever the valve
position is greater than the position setting of this switch control.
CAUTION
If both Position High Limit and Full Open Above are used, the Position
High Limit
must be below the Full Open Above.
7. Manual Mode - the switch is activated whenever the SVI II ESD is in
manual mode, configure mode, calibrate mode, or diagnostic mode.
NOTE
The contacts are OPEN when the SVI II ESD is unpowered and may
be made to be open or closed when the flag is asserted after boot.