Flowserve Electri-SAFE DataFlo Digital Electronic Positioner - Manual (Page 7)

WCAIM2025 Electri-SAFE DataFlo Digital Electronic Positioner 7
Flow Control Division
Worcester Controls
The positioner normally receives the setpoint signal from an external
source. However, the positioner can also operate with an operator
entered setpoint by using the Manual Setpoint Mode, described in the
Technical Reference Manual.
As the positioner controls valve position, various alarm conditions can
occur. The positioner contains a circuit that will provide an optically-
isolated alarm output that will activate when any alarm occurs. This
output can be used simply for operator notification or as a signal to
other processes. Parameters can be programmed to take an action
when certain alarms occur. The alarm state can be viewed on the
positioner display. See the Technical Reference Manual for further
reference.
An optional current output module can be used to indicate shaft
position. A programmable parameter can be set to specify the output
current range as either 4 to 20 mA or 0 to 20 mA. See the Technical
Reference Manual for further reference.
MAINTENANCE
GENERAL INFORMATION
A properly functioning Electri-SAFE Positioner will always be in the
full CW position whenever power is removed from terminals 7 and 8
in the actuator housing.
If a problem cannot be solved, the unit should be returned to the
factory for service. All electrical troubleshooting should be performed
by a licensed electrician or qualified electrical technician.
Initially check for loose wiring inside both electrical housings. Check
wiring against figures located in the Technical Reference Manual.
ELECTRI-SAFE TROUBLESHOOTING
For troubleshooting and diagnostics, see the Technical Reference
Manual.