Emerson FIELDVUE DVC6200f Instruction Manual page 238

DVC6200f Digital Valve Controller
Symptom
2. Device does not stay on segment.
3. A value cannot be written to a
parameter.
7
4. Function block actual mode does
not change with target mode.
5. Input or Output Block does not go
to mode target
226
Table 7-2. Instrument Troubleshooting (Continued)
Possible Cause
2.a Incorrect signal level.
2.b Excess noise on segment.
2.c Electronics failing.
3.a Resource block parameter Write Lock may be set
to Locked.
3.b If a transducer block parameter, the mode may be
incorrect or the parameter may be protected.
3.c You have attempted to write a value that is outside
the valid range.
3.d Function block or in/out block mode may be
incorrect.
4.a Resource block actual mode is Out of Service.
4.b Transducer block actual mode is not Auto.
4.c Schedules that define when function blocks
execute are not set correctly.
4.d Configuration error
5.a Resource block actual mode is Out of Service
5.b Transducer block actual mode is not Auto.
5.c Transducer has detected a hardware failure.
5.d Wrong output block is active.
5.e Output block is not licensed.
5.f Schedules that define when function blocks
execute are not set correctly.
5.g Configuration error.
−Continued−
Action
2.a1 Check that segment is properly terminated (see
host system documentation).
2.a2 Wrong cable type or segment length too long.
See Site Planning Guide.
2.a3 Bad power supply or conditioner.
2.b1 Check integrity of wiring connections. Make sure
cable shield is grounded only at the control system.
2.b2 Check for corrosion or moisture on terminals in
terminal box (refer to page 224 for terminal box
information).
2.b3 Check for bad power supply.
2.c. Replace printed wiring board assembly (see
Replacing the PWB Assembly on page 222).
3.a Change Write Lock to Not Locked (refer to page
32).
3.b1 Check table 4-14. If necessary change the
transducer block target mode to Manual.
3.b2 Check table 4-14. If necessary change data
protection.
3.c Check the range values listed for the parameter
(refer to the parameter tables in Section 4).
3.d. Confirm that block is in correct mode for writing
to any given parameter.
4.a Change Resource block target mode to Auto (see
page 32, Resource Block Mode, or host system
documentation).
4.b Change transducer block target mode to Auto
(see page 50, Transducer Block Mode or host
system documentation).
4.c Set the schedules using host system or
configuration tool. All function blocks must be in a
schedule that is downloaded to the device.
4.d Look for configuration error bit in BLOCK_ERR.
By default, all enumerature type parameters are
initialized to 0 (undefined). They must be configured
before the block can be put into service.
5.a Change Resource block target mode to Auto (see
page 32, Resource Block Mode, or host system
documentation).
5.b Change transducer block target mode to Auto
(see page 50, Transducer Block Mode or host
system documentation).
5.c A bad status is passed to the block's READBACK
or FIELD_VAL parameter. See transducer section of
Detailed Setup for repair information.
5.d Use Outblock Selection to select the desired
output block. The deselected block will have a bad
status for READBACK. This will keep it in IMAN
mode when target is other than OOS.
5.e The Actual Block Mode (MODE_BLK.ACTUAL
[5.2]) will remain out of service and the block cannot
be scheduled if the block has not bee licensed.
Contact your Emerson Process Management sales
office to upgrade product licensing.
5.f Set the schedules using host system or
configuration tool. All function blocks must be in a
schedule that is downloaded to the device.
5.g Look for configuration error bit in BLOCK_ERR.
By default, all enumerature type parameters are
initialized to 0 (undefined). They must be configured
before the block can be put into service.
November 2010