34
7 ND90 71 en
6.5.2 Installation
ND9100, ND7100
Mount the new communication circuit board care-
fully.
Locate the pins with the matching connector on the
board. Tighten the M3 screws (217) evenly.
Install the electronics cover (39)s and the cover of
the prestage (43).
Mount the position indicator (109) on the shaft and
tighten the M8 screw (110) temporarily. The final ori-
entation and locking of the position indicator should
be done after installation of the valve controller to
the actuator.
ND9200, ND7200, ND9300
Mount the new communication circuit board care-
fully.
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 con-
troller to the actuator.
7
ERROR MESSAGES
7.1
Failsafe errors
7.2
Alarms
7.3
Errors
Ex WARNING:
Grounding of the circuit board is essential to explo-
sion protection.
The board is grounded to the housing by the mounting
screw next to the terminal blocks.
Fig. 36
Communication board, ND9000H and ND7000H
Fig. 37
Communication board, ND9000F and ND9000P
215
215
Display message
Description
POSITION SENSOR FAILURE
Position sensor measurement failed.
Change the ND device to a new one.
SETPOINT SENSOR FAILURE
(HART version only)
mA measurement failed. Change
the ND 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 ND device to a new one.
Display message
Description
DEVIATION ALARM
Valve deviation out of limits.
STICTION LOW ALARM
Stiction has exceeded the low limit
(ND9000 only).
STICTION HIGH ALARM
Stiction has exceeded the high
limit (ND9000 only).
LOAD FOR OPENING LOW ALARM
Load for opening has exceeded the
low limit (ND9000 only).
LOAD FOR OPENING HIGH ALARM
Load for opening has exceeded the
high limit (ND9000 only).
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.
Display message
Description
PRESTAGE CUT ERROR
Prestage wire is cut or connector is
loose.
PRESSURE SENSOR 1 FAILURE
Actuator pressure sensor has failed.
The device performance level is
reduced if device is used as D/A
actuator. This will not effect to
control performance for single
acting actuator. Change the ND
device to a new one during next
maintenance activity.
PRESSURE SENSOR 2 FAILURE
Actuator pressure sensor has failed.
The device performance level is
reduced. Change the ND device to
a new one during next
maintenance activity.
PRESSURE SENSOR 3 FAILURE
Supply pressure sensor has failed.
This does not affect the
performance level.
SPOOL VALVE SENSOR FAILURE
Spool valve sensor failed. Check
the sensor connections. The device
performance level is reduced. For
ND9100 and ND7100 change spool
valve assembly (193) during next
maintenance activity. For ND9200/
ND7200/ND9300 replace device to
a new one during next
maintenance activity.
TEMPERATURE SENSOR FAILURE
Temperature measurement failed.
The accuracy of the measurements
is reduced. Change the ND device
to a new one during next
maintenance activity.
STATISTICS DATABASE ERROR
Failed to store statistics. New
measurements will be lost.
EVENT DATABASE ERROR
Failed to store events. The new
events will be lost.
