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Calibration & Testing 2-Way S30 S31 Valve with S70 Electric Actuator
2-way Assembly, S30/S70 and S31/S70
1
Calibration
1.1
1.2
1.3
1.4
2
Sertvo Pro Testing
3
Servo NXT Testing
PRECAUTIONS:
•
Wear safety glasses and all other appropriate safety equipment before performing any of
the listed tasks
•
Assure all components are present before assembly
•
This Work Instruction must be thoroughly reviewed and understood before conducted
Potentiometer Installation
Close Cam
Potentiometer Drive Gear
Open Cam
CAUTION: Risk of Electric Shock.
Disconnect the power supply before
making electrical connections
to avoid electric shock.
CAUTION: Risk of Property Damage.
Do not apply power to the system before
checking all wiring connections. Short
circuited or improperly connected wires
may result in permanent damage to the
equipment.
IMPORTANT: Do not exceed the electrical ratings of
the S70 Actuator.
www.braycommercialdivision.com
Bray Controls Commercial Division
13788 West Road, Suite 200A
Houston, Texas 77041
BCDSales@Bray.com
Phone: 1-888-412-2729
Fax: 1-888-412-2720
www.braycommercialdivision.com
12/13/19
1
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Summary of Contents for Bray S30/S70
- Page 1 Houston, Texas 77041 BCDSales@Bray.com Phone: 1-888-412-2729 Fax: 1-888-412-2720 www.braycommercialdivision.com Calibration & Testing 2-Way S30 S31 Valve with S70 Electric Actuator 12/13/19 2-way Assembly, S30/S70 and S31/S70 Calibration Potentiometer Installation Close Cam Potentiometer Drive Gear Open Cam Sertvo Pro Testing Servo NXT Testing PRECAUTIONS: •...
- Page 2 Calibration & Testing 2-Way S30 S31 Valve with S70 Electric Actuator Continued Calibration CAUTION The electrical travel switches must be set to activate (depress) prior to reaching the mechanical travel stops. The cams are color coded (green for open, red for closed). NOTE: Manual travel stops are designed to prevent manual overtravel from turning the handwheel, not to stop the electric motor.
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Page 3: Potentiometer Installation
Calibration & Testing 2-Way S30 S31 Valve with S70 Electric Actuator Continued Potentiometer Installation NOTICE: Step 1.1 applies to potentiometer installation and optional Servo Pro potentiometer initial setting, for all others skip to step 1.2. 1.1.1 Manually operate the actuator hand wheel counterclockwise until the valve reaches the desired fully open position. - Page 4 Calibration & Testing 2-Way S30 S31 Valve with S70 Electric Actuator Continued Close Cam 1.2.1 Skip to 1.2.2 for On/Off electronic modules. Servo electronic modules sometimes require special settings based on the Purchase Order documentation (i.e. reverse acting, 4-20mA signal input, 4- 20mA feedback, fail open, etc.).
- Page 5 Calibration & Testing 2-Way S30 S31 Valve with S70 Electric Actuator Continued Potentiometer Drive Gear The BLACK Potentiometer Drive Gear is not used for On/Off actuators. Skip step 1.3.2. 1.3.1 1.3.2 For NXT Servo actuators, the Potentiometer's Volts Direct Current (VDC) must be measured using a Multimeter.
- Page 6 Calibration & Testing 2-Way S30 S31 Valve with S70 Electric Actuator Continued Note: Make gentle contact when bringing the mechanical stop in contact with the output gear. When tightening the nut, use two wrenches. One to hold the bolt in place and one to tighten the nut. We want to avoid “driving”...
- Page 7 Calibration & Testing 2-Way S30 S31 Valve with S70 Electric Actuator Continued Open Cam 1.4.1 Manually operate the actuator handwheel counterclockwise until the valve reaches the desired open position. Visual alignment to center the valve disk at 90 degrees is sufficient, as changes in resilient seat valve disk flow coefficients are negligible in open position within a reasonable range.
- Page 8 Calibration & Testing 2-Way S30 S31 Valve with S70 Electric Actuator Continued Servo Pro Testing Deadband, Open Speed and Close Speed potentiometers shall be set to full open (counter- clockwise rotation), unless otherwise noted on purchase order. Put the Servo Pro into autocalibration mode by pressing and holding the autocalibration button for a minimum of 2 seconds.
- Page 9 Detection feature can be disabled by simultaneously pressing and holding the Up and Down Arrow keys for 5 seconds. After 5 seconds, all valve position indicators will flash simultaneously for 1 second indicating that the feature has been disabled. Verify the BRAY logo is flashing and that no fault lights are on. www.braycommercialdivision.com...
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