Emerson Fisher FIELDVUE DVC6000f, Instruction Manual

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DVC6000f Digital Valve Controllers
December 2009 6-4
the IMan mode. During the initialization state, all
unreported function block alarms are automatically
confirmed and acknowledged. Once the instrument
is considered operational, block execution is
scheduled and the instrument state moves to
Online.
Online—The instrument will be in this state if it
is operational. The function blocks are initially in
the Auto mode, but can be changed to a higher
level mode.
Standby—The instrument enters this state if the
resource block mode is Out of Service (OOS). In
this state all function block modes are forced to Out
of Service. The transducer block mode is not
affected. When the resource block mode is
changed to Auto, the instrument state moves to
Online.
Failure— The instrument moves to this state
whenever a hardware or memory failure is detected
which would prevent reliable operation. All function
blocks and the transducer block modes are Out of
Service.
Write Lock
(RB
>
Device Diagnostics
>
Write Lock)
Write Alarm: Alarm State
Write Lock
Write Lock (WRITE_LOCK [34]) determines if writes
are permissible to other device parameters. The Soft
Write Lock feature must be selected to be able to use
Write Lock (see Selecting Features). When Write Lock
is set to Locked, no writes are permitted to any
parameters within the device except to set Write Lock
to Not Locked. When locked, the block functions
normally, updating inputs and outputs and executing
algorithms. When Write Lock is set to Not Locked, the
Write Alarm alert is active.
Block Alarm
(RB
>
Device Diagnostics
>
Block Alarm)
The Block Alarm (BLOCK_ALM [36]) is used for all
configuration, hardware, connection failure or system
problems in the block.
Block Alarm: Alarm State
Block Alarm: Alarm State (BLOCK_ALM.
ALARM_STATE [36.2]) indicates the state of the
Block Alarm. Five states are possible:
Undefined
Clear reported
Clear not reported
Active reported
Active not reported
Block Alarm: Unacknowledged
Block Alarm: Unacknowledged (BLOCK_ALARM.
UNACKNOWLEDGED [36.1])
1 = Undefined
2 = Acknowledged
3 =
Unacknowledged
Maintenance
(RB
>
Device Diagnostics
>
Maintenance)
Restart Actions
WARNING
Restarting the instrument may cause
loss of process control. To avoid
personal injury and property damage
caused by the release of pressure of
process fluid, provide some
temporary means of control for the
process.
You can restart the instrument to reset parameters,
links, etc. within the instrument. However, due to the
effect that a restart can have on the instrument, and
therefore the control loop, restarting the instrument
should be used cautiously and only as a last measure.
The following procedure describes how to use Restart
Options to restart the instrument with a Field
Communicator. You can also restart the instrument
using ValveLink software or from a host system using
the Restart method included with the device
description (DD) software.
You can restart the instrument any time it is connected
to an active segment.
To restart the instrument, select Resource Block,
Configure/Setup, and Restart Options on the Field
Communicator.
1. Restart informs you about what can happen when
an instrument restart is performed. Select Yes to
continue, or No to abort without restarting.
2. Select the desired restart action or select EXIT to
exit Restart. Select Help (not the Help button) to get
information on restart actions.
There are two different restarts: Restart Processor,
and Restart with Defaults:
When selecting either of these options, Restart
informs you of the consequences of this action and
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