7 additional troubleshooting, 8 simulation mode, Simulation mode dip switch – Flowserve 400MD Logix User Manual
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Table 10.9 PID Function Block Parameters
Parameter
Initial Value
Valid Range
Corrective Action
BYPASS
0
1:OFF,2:ON
Initial value is a configuration error. Set value in valid range.
SHED_OPT
0
1-8(see Shed Options in the FF specs.) Initial value is a configuration error. Set value in valid range.
HI_HI_LIM
HI_LIM
+INF
+INF
PV_SCALE, +INF
Values must be set in rank order (e.g.LO_LIM > LO_LO_LIM but < HI_LIM
etc.)
LO_LIM
LO_LO_LIM
-INF
-INF
PV_SCALE, -INF
Values must be set in rank order.
OUT_HI_LIM
OUT_LO_LIM
100
0
OUT_SCALE +/-10%
Verify that OUT_HI_LIM > OUT_LO_LIM.
SP_HI_LIM
SP_LO_LIM
100
0
PV_SCALE +/-10%
Verify that SP_HI_LIM > SP_LO_LIM.
10.7 Additional Troubleshooting
As a general rule, follow the suggestions for corrective action for suspected problems described this document. If a problem is still present,
perform step 1 below. If the problem still persists, perform step 2 and so on.
1. In the resource block set the RESTART parameter to ‘Processor’. Then return to ‘run’.
2. Cycle power to the Logix 3400MD digital positioner
3. Re-start fieldbus driver software on the host computer with the Logix 3400MD digital positioner un-powered, then power-up the Logix
3400MD digital positioner.
4. Call Flowserve’s Valtek Control Product Technical Assistance. (See Technical Assistance on page 10.)
10.8 Simulation Mode
Simulation Mode Dip Switch
A simulation mode is available in the positioner, which is used to aid in system debug if the process is not running. When simulation mode is enabled, the
SIMULATE parameter in the AO block provides a user-selected value as the readback input to the AO block.
Setting Simulation Dip Switch
ATTENTION:
A hardware dip switch on the main PCB cover is set to enable or disable the S IMULATE parameter. See Figure 10.1 for dip switch
selection. Table 10.10 shows how to set the simulation dip switch on the main PCB cover.
Figure 10.1 Simulation DIP Switch Location on the PCB Cover
DIP Switch Block
Off
On
FF Simulate
Dip Switch
Logix 3400MD Digital Positioner LGENIM3405-02 11/13
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