Manualshelf

Technical information

ManualsBrandsSide-Power ManualsMarineSP 200 TC
41424344454647484950
IM-P343-29 CH Issue 542
9.5.4 MIN-T - minimum travel setting
Programming notes
Enables the minimum valve travel to be set as a percentage of the maximum
travel obtained during autostroke. Maximum setting is MAX-T less 33.3%.
Default value is 0%.
Use and keys to alter the displayed value. Press key to accept the
displayed value and advance to the maximum travel setting (MAX-T).
Commissioning notes
Minimum travel should be used where a minimum flowrate is required to be maintained
through the valve, (i.e. a cooling water application). Setting a minimum travel % value will
prevent the valve fully closing.
The input signal span range set (
MIN-R) and (MAX-R) will operate over the travel limits
set. If a value for MIN–T is set it will exclude the setting of shut-off minimum (S-MIN) for
control action direct (
DIR) and shut-off maximum (S-MAX) for control action reverse (REV).
9.5.5 MAX-T - maximum travel setting
Programming notes
Enables the maximum valve travel to be set as a percentage of the maximum travel
measured during autostroke. Minimum setting is MIN-T plus 33.3%.
Default values will depend on the selection of valve type (2-port or 3-port) and
control action (direct or reverse) as follows:
Valve type Direct Reverse
2-port 95% 95%
3-port 100% 100%
Use
and keys to adjust the displayed value. Press key to accept displayed
value and advance to the next function.
Commissioning notes
The maximum valve travel percentage should be used to prevent a control valve fully opening.
This is useful for applications where the valve is oversized or to restrict the maximum flowrate
through the valve.
On 2-port valves the default value is 95% to prevent the back of the plug hitting the bonnet.
On 3-port valves to ensure shut-off on both seats a 100% setting is required.
The input signal span range set (MIN-R) and (MAX-R) will operate over the travel limits set.
If a value for
MAX-T is set it will exclude the setting of shut-off maximum (S-MAX) for direct
action (DIR) and shut-off minimum control action (S-MIN) for reverse action (REV).