Emerson 7003M - Manual (Page 51)

Operator Manual
748223-K
June 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Calibration and Adjustments 4-5
Model 7003M
4-3 HOLD MODE
Refer to Figure 4-2 on page 4-7 and Table 4-6
below. In the HOLD mode:
• All instrument functions are locked
• All existing values are retained
• The instrument stops responding to
sensor signals
• The last measured value is displayed
• The last output value remains at the
isolated current output connections
• Alarms and ON/OFF-Controllers are held
in their last state
• No keys are recognized except entry to
the diagnostic routing.
KEY DISPLAY WHAT HAPPENS
DISPLAY Nothing Nothing
ACK Nothing Nothing
ALARM 1 Nothing Nothing
ALARM 2 Nothing Nothing
UP ARROW Nothing Nothing
DOWN ARROW Nothing Nothing
CAL Nothing Nothing
ENTER "run" Drops back to RUN mode
DISPLAY + ACK "d-4" "tSt" Moves to DIAGNOSTIC mode
Table 4-6. HOLD Mode Key Functions
If the sensor cable must be disconnected, the
instrument can be put in the HOLD mode, in
which all existing signal levels and output
current levels and output current levels are
maintained. This may be useful to prevent
disturbing an ON/OFF-control loop connected
to the relay contacts.
1. Press the UP ARROW and DOWN
ARROW at the same time to put the
instrument on HOLD.
2. If the security is activated, enter the
security identification (id) code and press
ENTER to continue.
3. Hld, YES, flash briefly, then Hld flashes
alternately with the last oxygen reading.
The output signal will remain unchanged
until the instrument returns to the RUN
mode.
4. Press ENTER to return to the RUN mode,
or continue with Section 4-4 Diagnostics
Mode on page 4-8.