Flowserve ESP3 User Manual

Automax Valve Automation Systems

3-Position Control/Dribble Control

Installation, Operation and Maintenance Instructions

Flowserve Corporation 765 South 100 East Phone: [phone]
Flow Control Division Provo, Utah 84606 Facsimile: 801 489 2228
Automation Business Unit www.flowserve.com Email: [e-mail]

SR Limit Switch Method

ESP3 Electronic Servo Positioner

Automax electric actuators with servo control are factory adjusted
for 90 degree operation and shipped in the full clockwise (CW)
position as viewed from the motor side.

WARNING (SEE NOTE 6 ON PAGE 4)

DO NOT CONNECT SHORT CIRCUIT TO MOTOR LEADS
WHILE MOTOR IS CONNECTED TO ESP3 - SERIOUS
DAMAGE WILL RESULT AND WARRANTY VOIDED.

Specifications

Power 110-125V, 50/60 Hz
Requirement* 5W @ 115 VAC
Temperature** -40°F (-40°C) to 160°F (70°C)
Approvals UL recognized

CSA certified

Range Of 30° to 180° rotational span
Adjustability

* Options availability for 240 VAC or 12/24 VDC applications.
** Options available for high humidity/outdoor use.

Servo Control Input Options

1. Connect input signal to TB1 terminals marked +IN and

-IN (4-20mA configuration is supplied as standard).

Type of
Input

RESISTIVE VOLTAGE CURRENT

LMP0003-1 (AUTO-42) 04/01

© 2001, Flowserve Corporation, Provo, Utah

Signal Board Adjustment

4 to 20 mAdc Input Jumper JP1 to the left
1 to 5 mAdc Input Jumper JP1 to the right
10 to 50 mAdc Requires special board.

Consult factory.
0 to 5 Vdc Input Jumper Removed
2 to 10 Vdc Input Jumper Removed
1 to 10 Vdc Input Jumper Removed

1.5 to 135 Ohm Requires special board.

Consult factory.

1.5 to 1000 Ohm Input Jumper Removed

(see notes on p.2) (250 Ohm Shunt)

Direct or Reverse Acting

Make sure valve and actuator rotate in the same direction and
are in the same position, i.e. valve full CW, actuator full CW.

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, place jumpers JP2 and JP3 to ‘R’

positions on ESP3 and proceed with Valve Alignment and
Servo Calibration. For reverse action with ESP3 Transmitter,
see notes on page 2.

Valve Alignment and Servo Calibration

Note:

Standard units are calibrated for 0 to 90 degree operation.

Units may be recalibrated for 180 degree operation.

1. Connect 115Vac/60hz power to terminals marked L1, N, and

GND. Power should be fused with an in-line 5 amp slow­blow fuse. ESP3 may be run on 50hz, but actuator may be
affected. See specific actuator I.O.M.

2. Safety overtravel switches disconnect the motor if the

actuator overtravels approximately 5 degrees past the full
CW or CCW position. On valves with mechanical stops, the
safety overtravel switches need to be set so that the motor
will not disconnect prior to hitting a mechanical valve stop.
See notes 3 and 6 under “Trouble Shooting” on page 4
before adjustment.

3. Minimum Position Adjustment:

• For Direct Acting: Apply minimum input signal to

ESP3 terminals +IN and -IN and adjust zero ‘Z’
potentiometer until actuator stops at full CW
position and CW LED turns off. Turn the ‘Z’
adjustment CW to move actuator CW.

• For Reverse Acting: Apply minimum input signal to

ESP3 terminals +IN and -IN and adjust zero ‘Z’
potentiometer until actuator stops at full CCW
position and CCW LED turns off. Turn the ‘Z’
potentiometer CCW to move actuator CW.

4. The voltage at test point ‘A’ referenced to test point ‘G’

should be approximately 0.75 Vdc. If not, see note #4 under
“Trouble Shooting”.

5. Maximum Position Adjustment:

• For Direct Acting: Apply maximum input signal to

ESP3 and adjust span ‘S’ potentiometer until actuator
stops at full CCW position and CCW LED turns off.

• For Reverse Acting: Apply maximum input signal to

ESP3 and adjust span ‘S’ potentiometer until actuator
stops at full CCW position and CCW LED turns off.

6. Due to Zero-Span interaction, repeat steps 3 and 5 until

actuator positions repeat at both ends of travel
(usually 2 to 3 times).

Page 1 of 4

Automax Valve Automation Systems

3-Position Control/Dribble Control

Installation, Operation and Maintenance Instructions

Flowserve Corporation 765 South 100 East Phone: [phone]
Flow Control Division Provo, Utah 84606 Facsimile: 801 489 2228
Automation Business Unit www.flowserve.com Email: [e-mail]

SR Limit Switch Method

Resistive Inputs (optional)

3 wire: Clockwise rotation of input potentiometer increases signal

(increase resistance). Connect potentiometer’s clockwise lead to
terminal marked IS. Connect counter-clockwise lead to terminal
marked -IN. Connect potentiometer’s wiper lead to terminal
marked +IN. Remove JP1 input select jumper.

Note:

If clockwise rotation of potentiometer does not rotate actuator

in an increasing signal direction, reverse potentiometer leg leads.

RESISTIVE INPUT CONFIGURATIONS

Heater & Thermostat (optional)

1. 115 Vac heater and thermostat are connected to TB1
terminals L1 and N on the ESP3 servo board (see Wiring
Diagram on page 3).

ESP3 Transmitter (optional)

Note:

If the ESP3 Transmitter is used, the servo calibration (p.1) must
be completed with the 4-20mA transmitter installed Servo calibration
should be performed before transmitter calibration.

1. Connect 4-20mAdc output leads to transmitter

terminals marked ‘+’ and ‘-’.

2. Place transmitter JP1 jumpers to positions 1-3 and 2-4

for 90 degree operation,or positions 1-2 and 3-4 for
actuators calibrated for 180 degree operation.

3. Drive actuator to the full CCW position and adjust ‘S’

span adjustment for 20mA output.

4. Drive actuator to the CW position and adjust ‘Z’ zero

adjustment for 4mA output.

5. Repeat steps 3 and 4 until the desired output is achieved

in both positions.

6. Standard ESP3 transmitters are direct acting. A low

output signal indicates CW position and high output
signal indicates CCW position. For reverse acting
see below.

7. The transmitter is self powered and optically isolated

from the AC motor drive circuits.

Important Notes About Reverse Acting
ESP3 with Transmitter

Note:

Reverse acting transmitter means a 4mA output for full

CCW, and a 20mA output for full CW position.

1. The BLUE and GREEN feedback potentiometer wires have
been reversed on TB1 (see chart below).

2. The feedback potentiometer voltages as measured from
test points ‘A’ to ‘G’ on the ESP3 card are as follows:

CCW ~ 0 .75 Vdc
CW ~ 4.70 Vdc

3. JP2 and JP3 (Direct / Reverse acting jumpers) are to be on

‘D’ Direct (left two posts).

4. The RED and BLACK motor drive leads on TB2 have been
reversed (see chart below).

5. The drive LED’s will now indicate the opposite of the
actual drive travel.

Wire Transmitter Transmitter

BLUE (Feedback Pot.) P1 P3
GREEN (Feedback Pot.) P3 P1
RED (Motor Drive) CW CCW

BLACK (Motor Drive) CCW CW

Reverse Standard
Position Position

Performance Data (Centura/ESP3)

CE2ATA CE4ATA CE7ATA CE1ATA
LINEARITY +/-1% +/-1% +/-1% +/-1%
RESOLUTION 2.0° 1.8° 1.8° 1.5°
DEADBAND +/-0.8% +/-0.7% +/-0.5% +/-0.3%
HYSTERESIS +/-1.0% +/-0.8% +/-0.5% +/-0.5%

ACTUATOR ANGLE FEEDBACK VOLTAGE

(DEGREES) OF POTENTIOMETER

-5° PAST CW ~0.53 VOLTS
0° CW POS. ~0.75 VOLTS

90° CCW POS. ~4.70 VOLTS

(TPA TO TPG)

LMP0003-1 (AUTO-42) 04/01

© 2001, Flowserve Corporation, Provo, Utah

ESP3 FEEDBACK POTENTIOMETER

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