7 ND92F 70 en
21
6.5.2 Installation
❑
Mount the new communication circuit board
carefully.
❑
Locate the pins with the matching connector on
the board. Tighten the M3 screws (217) evenly.
❑
Install the inner cover (39).
❑
Mount the position indicator (109) on the shaft
and tighten the M8 stop screw (110) temporarily.
The final orientation and locking of the position
indicator should be done after installation of the
valve controller to the actuator.
7
ERROR MESSAGES
7.1
Failsafe errors
7.2
Alarms
ATEX WARNING:
Grounding of the circuit board is essential to
explosion protection.
The board is grounded to the housing by the mount-
ing screw next to the terminal blocks.
Fig. 23
Communication board
215
Display message
Description
POSITION SENSOR FAILURE Position sensor measurement
failed. Change the ND9000
device to a new one.
PRESTAGE SHORTCUT
ERROR
Shortcut in the prestage unit.
FAE nnn
Fatal malfunction in the device.
nnn is a number between 001 -
004. Change the ND9000
device to a new one.
Display message
Description
DEVIATION ALARM
Valve deviation out of limits.
STICTION LOW ALARM
Stiction has exceeded the
low limit.
STICTION HIGH ALARM
Stiction has exceeded the
high limit.
LOAD FOR OPENING LOW
ALARM
Load for opening has
exceeded the low limit.
LOAD FOR OPENING HIGH
ALARM
Load for opening has
exceeded the high limit.
SPOOL VALVE PROBLEM
Spool valve problem in the
controller. Check the spool
valve unit and replace if
necessary.
PNEUMATICS PROBLEM
Inconsistent actuator
pressures. Check pneumatic
connections and actuator
leakage.
FRICTION PROBLEM
Valve is not moving correctly.
Check load factor.
Содержание ND9200F
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