Display Blanking; Alarms Display - Emerson Fisher Multiport Flow Selector Instruction Manual

Multiport Flow Selector
January 2019
PORT LED flashes Green when the actuator is within 2° and outside 1° prior to the setpoint of the selected port. The
port LED flashes Red when within 2° and outside 1° beyond the setpoint. The port LED illuminates steady Green while
within 1° of the selected port position.
ALARM (Yellow) LED flashes when any alarm is present. The LED is on solid when stopped between ports, otherwise it is
off.
OVER TORQUE alarm condition is indicated when a torque alarm occurs in mid-travel. The over torque LED will flash so
long as the over torque condition exists.
HOME PORT LED will light when the actuator is within 0.25° of the user selected Home Port position.
Selector switch LEDs are also made available for operational use in the bottom right corner. The selector LEDs are
important when using a Remote Display Module (RDM) because these LEDs indicate the combined logic of the two
selector switches, i.e. the selected mode of operation of the actuator. All three LOR LEDs flash while the actuator is in
setup mode.

Display Blanking

The user has the option to have the display blank out (turn off) when not in use. This is a very important feature for
solar power applications because power consumption is minimized. Option to enable or disable display blanking
timeout is available by setup using MPA Config or the control knobs. See the field setup section for selecting the
option. When control knobs are used for setup, the parameter is C9 as shown in the table on page 38. The default
setting is display blanking timeout enabled for 24VDC versions and disabled for AC versions. If display blanking is
enabled, the display will blank out after 60 seconds when left unattended while the selector switch is in Remote mode.
The display will blank out after 3 minutes when left unattended while the selector switch is in Local mode. The display
will not blank out while in setup mode. When selected, display blanking applies to both local (LDM) and remote (RDM)
displays.

Alarms Display

When an alarm occurs, it is automatically displayed by the two character LED display. The yellow ALARM LED will flash
while any alarm is present. The display will alternate between the current port position and the active alarm(s) except
when stopped between parts. If more than one alarm is active, the display will cycle through a sequence of Port
Position, newest alarm, Port Position, next oldest alarm and so on until all active alarms are displayed. The cycle is
continuously repeated until all alarms are cleared. Each alarm is recorded in an Alarm History. The alarm history may
be viewed by entering setup mode (see next section).
All possible alarms that may be displayed are listed on the name plate of the Local Display Module (LDM). Following are
definitions of the listed alarms.
CE Communication Error
SA Stall Alarm
LE Local ESD
PH Phase Alarm
EF Encoder Failed
AF Actuator Failed
OL Motor Overload
LC Lost Control Voltage
Note
Over torque alarm is displayed by dedicated LED. See Operational Display section above.
30
Lost communication with the Remote Display Module (RDM) when configured.
Actuator failed to move within 8 seconds after commanded by either local or remote
controls.
Hardwired Local Emergency Shut Down is active.
Loss of one phase when configured for 3-Phase.
Failure of either the position or torque encoders.
A fault is detected by hardware electronics fault monitor. This is a non-recoverable
condition that requires actuator service.
Motor thermals or motor overload relay has tripped.
Loss of power to the motor control circuits. The control voltage supply has an
automatic resetting fuse.
Instruction Manual
D104239X012