Accessory List

ManualsBrandsBelimo ManualsCharacterized Control Valves3/4" B2 Series, 2-Way Characterized Control Valve (Nickel Plated Forged Brass Body) - Cv Rating (7.4)

Table Of Contents

800-543-9038 USA 866-805-7089 CANADA 203-791-8396 LATIN AMERICA

Application

The S1A and S2A auxiliary switches are used to indicate when a

desired position of a valve is reached or to interface additional

controls for a specific control sequence.

Operation

The S1A and S2A auxiliary switches are mounted onto the direct coupled

actuator. The switches are modular units that mount directly onto LR and

AR type actuators and are locked into place by guiding grooves on the

sides of the actuator.

A driver disk is attached to the actuator handle and offers direct

transmission of the actuator position to the micro switch cams. The

switching points can be set over the full scale of 0 to 1 simply by

adjusting the slotted discs.

Accessories

Auxiliary Switches S1A, S2A

For the non-spring return direct-coupled actuators

Types

S1A 1 SPDT 3 ft, 18 GA Appliance Cable

S1A/300

1 SPDT 6 ft, 18 GA Appliance Cable

S1A/500

1 SPDT 10 ft, 18 GA Appliance Cable

S2A

2 SPDT 3 ft, 18 GA Appliance Cable

S2A/300

2 SPDT 6 ft, 18 GA Appliance Cable

S2A/500

2 SPDT 10 ft, 18 GA Appliance Cable

Technical Data S1A S2A

Number of Switches 1 SPDT 2 SPDT

Weight 4.6 oz [130 g] 6.0 oz [170 g]

Switching Capacity 3A (0.5A), 250 VAC

Switching Point

Adjustable over Full Rotation (0° to 95°)

Pre-Setting With Scale Possible

Humidity

5 to 95% RH non-condensing

Ambient Temperature -22°F to 122°F [-30°C to +50°C]

Storage Temperature -40°F to 176°F [-40°C to 80°C]

Housing

NEMA 2 / IP54

Housing Rating UL94-5VA

Servicing

Maintenance Free

Agency Listings cULus acc. to UL60730-1

CE according to 73/23/EEC

Quality Standard ISO 9001

Wiring Diagram

Mounting Instructions

1. Press down the manual override button and rotate the actuator

fully counter clockwise.

2. Place the switch/potentiometer adaptor onto the hex shaft of the

handle which is in the center of the valve/actuator coupling.

3. Slide switch onto the actuator using the actuator guiding grooves

on the sides of the actuator.

4. Check for correct mating of the adaptor to the switch.

5. Adjust switch dials as necessary.