Flowserve MX/QX Profibus DP/PA Field Unit - Manual (Page 33)

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PB DPV1 / PA Field Unit Installation and Maintenance FCD LMENIM2336-03 – 12/12
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1. Proceed through the Setup to the CHANGE PB/PA? display.
2. Select YES to proceed to the STATUS (ON)-OK? display. PB Status enables the user to change
from the default condition to turn on and off the digital control capability of the actuator.
3. The unit will display PB ADDRESS 1–OK? If OK, select YES. If NO, select different address
(1-125).
4. Select YES to proceed to the ANALOG SCALE display.
5. From ANALOG SCALE, if the default value of 0-100 is OK, select YES. If not, select NO.
6. If YES is selected, ESD ACTION (IGNORE) – OK? is displayed.
7. For ignoring ESD ACTION, select YES. For setting ESD ACTION, select NO. If POSITION is
chosen as action, ESD MOVE TO XXX% OPEN is displayed. Select NO to set desired position.
8. If YES is selected, COMM LOSS ACTION (NONE) – OK? is displayed.
9. For no COMM LOSS ACTION, select YES. For setting COMM LOSS ACTION, select NO. If
POSITION is chosen, as action, MOVE TO XXX% OPEN is displayed. Select NO to set desired
position.
10. If YES is selected, COMM LOSS DELAY (60 SEC) – OK? is displayed.
11. For a 60-second delay, select YES. Otherwise, select NO until the required value is displayed.
12. If YES is selected, OPEN/CLOSE MODE-OK? is displayed.
13. For OPEN/CLOSE MODE, select YES. For POSITION MODE, select NO. In position mode, the host
device can set the valve position to any desired value; in OPEN/CLOSE MODE the host can only
fully open or fully close the valve. The user must locally configure one of these two modes.
14. Proceed to configure the proportional band and deadband as discussed in the next sections.
2.5.1 Proportional Band
Proportional band is the range of errors between the position and demand signal that will produce
reduced speed (pulsing). The default value is 15%.
To change from the default value, select NO until the required value is displayed. The value is adjust-
able between 1% and 100%, in 1% increments.
2.5.2 Deadband
The default deadband value is 2%. For error signals less than this, no motion occurs.
The deadband should be wide enough to prevent “hunting” of the actuator, but as low as possible to
give adequate response to changes in the error signal. To change from the default, select NO to adjust
the value between 1% and 50%, in 1% increments to suit the application.
2.5.3 Valve Data
Valve data may be stored in the MX/QX PB transducer block for use by the host system. Refer to
Bulletin LMENIM2306 (MX) or LMENIM3306 (QX), respectively for instructions to edit data for the
valve serial number, model and type.