INDELAC CONTROLS SNS20 Manuale di istruzioni
Safe & Secure Series Electric Actuator
with Internal Battery Back-up
Installation, Operation &
Maintenance Manual
For Use with:
SNS20 & SNS28 Models (R1)
Additional supplements may be needed for selected optional equipment including, but not
limited to models with: modulating controls, timers, speed controllers &remote/off/local
controls.
TELEPHONE: +1-859-727-7890
TOLL FREE: +1-800-662-9424
FAX: +1-859-727-4070
SHIPPING ADDRESS: 6810 POWERLINE DR.-FLORENCE, KY. 41042
For a digital copy of this manual, access to training videos, access to 3D product renderings,
or to request additional support
VISIT OUR WEBSITE AT WWW.INDELAC.COM
REVISED: FEB 2021
SNS20-28C Actuator with Internal Battery Back-up Installation, Operation & Maintenance Manual
Page 2
INTRODUCTION:
Thank you for selecting Indelac Controls, Inc. (ICI) for your valve or damper automation
requirement. We at ICI are proud of our products and feel confident they will meet or
exceed your expectations of quality and reliability.
Every precaution has been taken to insure that your equipment will arrive undamaged;
however, accidents do occur. Therefore, the first thing you must do upon receipt of your
package is to inspect it for damage. If the box is damaged there is a possibility that the
equipment inside the box may be damaged as well. If this is the case YOU MUST FILE A
CLAIM with the delivering CARRIER. All shipments are F.O.B. our factory and it is YOUR
RESPONSIBILITY to file a claim for damages.
STORAGE:
If the actuators are scheduled for installation at a later date:
1. Store off the floor.
2. Store in a climate controlled building.
3. Store in a clean and dry area.
FOR FUTURE REFERENCE RECORD:
1. Actuator model number
2. Actuator enclosure type NEMA 4 , NEMA 4X _, NEMA 7 _, NEMA 4 & 7__
3. Actuator output torque LB-IN
4. Motor characteristics, Voltage Hertz Phase
5. Actuator serial number
6. Date of installation Put into operation
7. Valve Data:
7a. Manufacturer
7b. Style & fig. No.
7c. Size
7d. End connection
7e. Material of construction, Body Stem & ball
7f. Brake away torque LB-IN @ PSI
7g. Other helpful data
MEDIA:
1. System media
2. Temperature, (deg. F.) Maximum, . Minimum, .
3. Pressure PSI
*As this information is listed it is important to pay attention to all of the actuator specifications
relative to the valve specifications and system requirements. If the actuator is not properly sized
for the valve and application the life will be shortened or it may not work at all.
SNS20-28C Actuator with Internal Battery Back-up Installation, Operation & Maintenance Manual
Page 3
TOOLS REQUIRED:
ADDITIONAL TOOLS WILL BE REQUIRED FOR THE SCREWS TO MOUNT THE VALVE TO THE ACTUATOR.
SNS20C & SNS28C SERIES
Cover Screws 7/16” Socket
Terminal Strip Screws 3/16” Wide Flat Head Screwdriver
Cam Set Screw 5/64” Allen Wrench
Mounting Pad Screws 9/16” Socket
SUGGESTED MAXIMUM TORQUE VALUES FOR FASTENERS (IN-LBS.)
SCREW SIZE LOW CARBON STEEL 18-8 SS 316 SS ALUMINUM
2-56 2.2 2.5 2.6 1.4
4-40 4.7 5.2 5.5 2.9
6-32 9 10 10 5
8-32 18 20 21 10
10-24 21 23 24 13
10.32 30 32 33 19
¼-20 65 75 79 45
5/16-18 129 132 138 80
3/8-16 212 236 247 143
½-13 465 517 542 313
5/8-11 1000 1110 1160 715
SNS20-28C Actuator with Internal Battery Back-up Installation, Operation & Maintenance Manual
Page 4
PRODUCT DESCRIPTION:
The SNS20 – 28C Safe & Secure Series Actuator is a quarter turn Open/Close Actuator with Battery
Backup Power – ALL IN ONE! No more mounting a separate Fail Safe Unit to provide power in case of
external power failure. The actuator’s internal battery will provide power to the motor in the event of an
external power failure. The actuator can be configured in the field for FAIL OPEN or FAIL CLOSE.
This new series of actuator can operate loads from 2000 in/lbs. to 2800 in/lbs. These actuators can be
ordered to operate on input voltages of 115vac/230vac, 24vac/24vdc or 12vdc and are enclosed in a
SINGLE standard “L” series NEMA 7 style housing.
Switching from external power to battery power is seamless – when the external power source fails, the
internal transfer circuit switches to battery power automatically without any operator intervention.
Depending on the fail position setting that the operator has pre-selected for the actuator, the actuator will
drive the valve to that position. Once the external power is restored, the actuator will automatically switch
back to external power, and the battery will begin to re-charge automatically! The actuator will then return
to its last position before the power had failed.
This unit is available as a Standard OPEN/CLOSE Actuator or with the Modulating Option for precise valve
position control using 4-20mA, 0-10V or 1-5V external input signal. Position feedback is available for both
the standard and the modulating models.
A variety of other optional features are available for these actuators including but not limited to: Aux. Limit
Switches, Motor Brakes, Additional Conduit Entries, Mechanical Stops, Temperature and Condensation
Controls. Speed Controls & Timers are available mounted in a separate enclosure.
UNIT SPECIFICATIONS:
Enclosure rating: NEMA 4 Standard; NEMA 4X & NEMA 7 also available
Motor Duty Cycle: 100% Standard
Weight: 40 Lbs.
Mounting Pad: ISO 5211 F10 BC 4.015”
Operating Voltages: 115vac/230vac, 24vac/24vdc, 12vdc
Incoming Power Fuse: TR5 Pico Fuse, 250V / 10A
Motor Fuse: 10A Glass Cartridge, Slow Blow 5x20mm
Power: 120 Watts Max. / add 20 Watts for optional heater
Position Indication: Dome Style Visual Indicator
Battery: 12vdc, 1.4AHr
Battery Recharge Time: Approximately 8-10 Hours
Battery Life on Trickle Charge: 4-5 years
Auxiliary Switch Rating: Dry Contact, 15 Amps @ 250vac
Input Signal Contact Rating: Internally Generated – (12vdc @ 1A)
Temperature Range: -40°F to 150°F
Heater and Thermostat required below 0°F
SNS20-28C Actuator with Internal Battery Back-up Installation, Operation & Maintenance Manual
Page 5
MECHANICAL MOUNTING:
The Safe & Secure Actuator can be direct mounted to any valve using the standard ISO 5211 F10
Output. See the drawing below for the actuator output mounting dimensions for valves requiring
mounting hardware.
SNS20-28C Actuator with Internal Battery Back-up Installation, Operation & Maintenance Manual
Page 6
CUSTOMER ELECTRICAL CONNECTIONS FOR STANDARD OPEN/CLOSE:
All customer electrical connections are done per the below wiring diagrams. Incoming power
should be wired using 12awg minimum for DC and 18awg for AC. Control signal wiring may be
22awg or larger for direction control. All wiring is to be completed through the conduit opening
using the appropriate conduit –Refer to your local electrical codes. Remove the actuator cover
by loosening the cover screws and pulling straight up on the cover to complete the wiring and set-
up. Connect the Main Power to the actuator per the appropriate wiring diagram below. Assure
that the power wires are DE-ENERGIZED!
WIRING DIAGRAM: W200708
200708
DESCRIPTION: 115VAC/230VAC SNS2000 ACTUATOR STANDARD OPEN/CLOSE
OPTIONS SHOWN:
OPTIONS SHOWN:
OPTIONS SHOWN:
2 AUXILIARY SWITCHES
MOTOR BRAKE
HEATER AND THERMOSTAT
WARNING!
PAY CLOSE ATTENTION TO THE WIRING DIAGRAMS WHEN CONNECTING THE INPUT POWER TO THE ACTUATOR.
IMPROPER POWER CONNECTION CAN RESULT IN DAMAGE TO THE ACTUATOR OR SERIOUS INJURY TO THE INSTALLER.
SNS20-28C Actuator with Internal Battery Back-up Installation, Operation & Maintenance Manual
Page 7
CUSTOMER ELECTRICAL CONNECTIONS FOR STANDARD OPEN/CLOSE:
WIRING DIAGRAM: W200628
200628
DESCRIPTION: 24VAC & 24VDC SNS2000 ACTUATOR STANDARD OPEN/CLOSE
OPTIONS SHOWN:
OPTIONS SHOWN:
OPTIONS SHOWN:
2 AUXILIARY SWITCHES
MOTOR BRAKE
HEATER AND THERMOSTAT
NOTE: For all wiring, make sure the connectors and wires are fully seated after making all wiring
connections.
SNS20-28C Actuator with Internal Battery Back-up Installation, Operation & Maintenance Manual
Page 8
CUSTOMER ELECTRICAL CONNECTIONS FOR STANDARD OPEN/CLOSE:
WIRING DIAGRAM: W200707
200707
DESCRIPTION: 12VDC SNS2000 ACTUATOR STANDARD OPEN/CLOSE
OPTIONS SHOWN:
OPTIONS SHOWN:
OPTIONS SHOWN:
2 AUXILIARY SWITCHES
MOTOR BRAKE
HEATER AND THERMOSTAT
Customer Connections, Board Connector View
Extra Connections
–Relays and Status
Power & Signal Connections
–
AC/DC Inputs & Open/Close
SNS20-28C Actuator with Internal Battery Back-up Installation, Operation & Maintenance Manual
Page 9
CUSTOMER ELECTRICAL CONNECTIONS FOR MODULATING OPTION:
WIRING DIAGRAM: W200620
200620
DESCRIPTION: 115/230VAC ACTUATOR WITH MODULATING CONTROL
OPTIONS SHOWN:
OPTIONS SHOWN:
OPTIONS SHOWN:
2 AUXILIARY SWITCHES
MOTOR BRAKE
HEATER AND THERMOSTAT
SNS20-28C Actuator with Internal Battery Back-up Installation, Operation & Maintenance Manual
Page 10
CUSTOMER ELECTRICAL CONNECTIONS FOR MODULATING OPTION:
WIRING DIAGRAM: W200629
200629
DESCRIPTION: 24VAC & 24VDC ACTUATOR WITH MODULATING CONTROL
OPTIONS SHOWN:
OPTIONS SHOWN:
OPTIONS SHOWN:
2 AUXILIARY SWITCHES
MOTOR BRAKE
HEATER AND THERMOSTAT
Questo manuale è adatto per i seguenti modelli
1
Indice
