Flowserve ESP-DC Electronic Servo Positioner - Manual

Automax electric actuators with servo control are
factory adjusted for 90 degree operation and
shipped in the full clockwise position as viewed
from the motor side.
ESP-DC Configuration
The ESP-DC board provides a variety of options for
the user. These options are made available with the
configuration of the jumpers JP1-JP6. See the table
at the bottom of this page for a summary of the
available configurations.
Servo Control Input Options
1 Connect input signal to terminals marked +IN
and -IN on the junction block J3.
A 4-20mA Current Input (100 Ohm sink) - JP1
set to "A" (left) position. This is supplied as
standard.
B 2-10 Vdc Input - JP1 set to "B" (right)
position.
Direct or Reverse Acting
1 Standard units are direct acting:
Low input (e.g. 4 mA) = CW*
*
High input (e.g. 20 mA) = CCW*.
2 To make reverse acting, move jumper JP2 to
the 'R' (right) position.
Fault Detection and Action
1 FAULT conditions occur when the torque of the
DC motor exceeds a preset maximum value.
This feature is used to protect the valve
hardware, the actuator hardware, and alert the
user that there may be an obstruction in the
valve. When a fault occurs, the LED labeled
'FLT' will be lit, and the actuator will stop. The
actuator must receive a signal to drive in the
opposite direction in order to reset the FAULT
condition.
2 By running a wire to the FLT terminal strip
location on junction block J3, a signal can be
returned to indicate if a FAULT occurs. Jumper
JP3 can be used to set the FLT terminal output
to the following:
A High - Jumper JP3 set to "P" (left) connects
the FLT terminal to the Power Supply "+"
when a FAULT condition occurs.
B Low - Jumper JP3 set to "N" (right) shorts
the FLT terminal to the Power Ground "-"
when a FAULT condition occurs.
Low Power Operation
1 The factory configures the ESP-DC for full
functionality. If low power consumption is
required, the FLT output and the LED's may be
disabled.
A FLT - to disable the FLT output, move JP4
to the "N" (right) position.
B LED's - to disable the LED's, move JP5 to
the "N" (right ) position.
Loss of Input Signal
1 If the input signal to the actuator is lost, the
ESP-DC is configured to turn full CW* as a
safety precaution.
2 The Loss of Input action above can be disabled
by setting JP6 to the "S" (lower) position. In
this case the actuator will simply stop if the
Input Signal is lost.
ESP-DC Jumper Configuration
JUMPER Factory Setting Option
JP1 - INPUT A : 4-20mA B : 2-10 Vdc
JP2 - ACTION D : Direct R : Reverse
JP3 - FLT output P : +Vcc N : GND
JP4 - FLT enable Y : Enable N : Disable
JP5 - LED enable Y : Enable N : Disable
JP6 - Loss of
Input R : Full CW* S : Stop
*
For Reverse Acting, the CW and CCW directions marked with a * are reversed.
B00156-0 Page: 1 of 4
11444 Deerfield Road
Cincinnati, Ohio 45242
(513) 489-7800
FAX (513) 489-5243
ESP-DC
Electronic Servo Positioner
Installation & Operating Instructions