Warren Controls PICV Series - Manual (Page 20)

20
2600 Emrick Blvd • Bethlehem, PA 18020 • USA • 800-922-0085 • www.warrencontrols.com
VM5000E MOTOR ACTUATOR
Installation of modification circuit board • PUR 1137
IN KIT NUMBER KVM5000EFB4TO20MA00
to convert native 2-10 vdc feedback output to optional 4-20 mAdc.
PUR 1137
4-20 mAdc Mod. Board
OVERVIEW:
VM motor actuators feature a native DC voltage position feedback output
available at motor terminals X (+) and SN (-). Addition of the optional circuit
board shown above converts the feedback output to 4-20 mAdc, available at
terminals 4-20mA (+) and N (-), capable of working into load resistances as
high as 550 ohms. The circuit operates on 24 vac fed from terminal SP (hot)
to terminal SP on the mod. board, and terminal SN (common) to terminal
SN on the mod. board. A single wire brings feedback from motor terminal
X to mod. board terminal 2-10V. An adjustment potentiometer on the mod.
board can calibrate the 4-20 mAdc feedback output at any critical point in
the actuator’s travel. Nominal adjustment span, when voltage feedback is 2
vdc, is from 3.5 to 4.5 mAdc output.
MATERIALS & TOOLS:
Wires and mounting screws are provided in the kit. The illustrations that fol-
low show RED wire insulation for power (hot), BLACK for power (neutral) and
GREEN for feedback. Stranded wire is used to avoid difficulty in connecting
two wires to a single terminal on the motor board. A small straight-bladed
screwdriver is needed for the wiring terminals, and a #2 Phillips screwdriver
for the mounting screws
VM5000E KVM5000EFB4TO20MA00
A. Using four mounting screws, fasten the mod. board to the existing bosses on top of the motor housing. Note the semicircular
clutch clearance cutout on the right side.
B. Install the RED wire from motor board terminal SP to mod. board terminal SP.
C. Install the BLACK wire from motor board terminal SN to mod. board terminal SN.
D. Install the GREEN wire from motor board terminal X to mod. board terminal 2-10V.
E.
Installation is complete. Connect the motor actuator in accordance with the Installation, Operating & Maintenance manual,
except that feedback output is now located at mod. board terminals 4-20mA (+) and N (-).