Flowserve 400MD Logix - Manual (Page 100)

10.17 Logix 3400MD Fault States
The following procedure describes hot to setup the fault states in the Logix 3400MD:
• In the Resource block verify the Faultstate is checked in the FEATURE_SEL parameter
• In the AO block make sure the SHED_OPT parameter is initialized correctly for your system. (NormalShed_NormalReturn is
most common)
To Fail In Place
• In the AO block verify the Fault State to Value is NOT checked in the OP_OPTS parameter.
To Fail Closed / Open / or to a designated value
• In the AO block verify the Fault State to Value is checked in the OP_OPTS parameter.
• In the AO block set the FSTATE_VAL parameter to the position you wish to fail to between 0 and 100. (0 for closed or 100 for
open or anything in between)
In the AO block set the FSTATE_TIME parameter. This parameter will delay the fault state action by the amount of time indicated.
The default for this is 0 (zero) seconds or no delay. Some will recommend this value be set to something other than zero to ac
count for momentary faults that recover itself.
To Test the fault state is set correct
• In the Resource Block set the SET_FSTATE parameter to SET. The device should move to the desired fault state.
• When the test is complete in the Resource Block set the CLR_FSTATE parameter to CLEAR. The device should start functioning
properly at this point.
10.18 Logix 3400MD Digital Ouput (DO) Operation
The DO block is designed to be able to set the position to a predetermined position based on the OUT_d parameter of the DO block.
To implement, schedule the DO block to run and set the DO OUT_d parameter to the desired value based on the following table.
!
Note: this will only work when the block is in AUTO mode.
A value of 16 in the DO OUT_d parameter will disable the DO and revert control back to the AO block.
Table 10.17 DO OUT_d Table
OUT_D_VALUE Position
00 0%
01 100%
02 50%
03 7.0%
04 14%
05 21%
06 28%
07 35%
08 42%
09 49%
10 56%
11 63%
12 70%
13 77%
14 84$
15 91%
16 Diables DO
Logix 3400MD Digital Positioner LGENIM3405-02 11/13
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