Schneider Electric S520 Series, S530 Series, S540 Series, SK-520 Series, SK-530 Series Data Sheet

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Page 1

APPLICATION

These switches are manually operated devices adaptable to a wide variety of applications in pneumatic control systems. They are normally used to perform diverting or supply and exhaust functions to operate final control components or index relays in multiple switching systems.

The S520/SK-520 ia a four-branch switch. The S521/SK-521 is a five-branch switch that provides one blocked port in each knob position.

The S530/SK-530 is a four-branch switch which can be used to supply a signal to any one of three devices or supply any one of three signals to a device. Its unused ports are blocked. The S531/SK-531 is identical except for its unused ports being exhausted to atmosphere.

The S-540/SK-540 and S541/SK-541 are five-branch switches which follow the same operating pattern as the S530/SK-530 Series. However, they can supply a signal to any one of four devices or vice-versa. Unused ports are blocked in the S540/SK-540 and exhausted in the S541/SK-541.

Various dials are available for each model and for specific switch applications.

SPECIFICATIONS

Construction:

Case, Glass - filled nylon. Dials Plates, Anodized aluminum. Knob, Black sunburst plastic with pointer.

Environment:

Maximum Ambient Temperature, 140°F (60°C)

Supply Air Pressure: Clean, dry, oil free air required (ref.

EN-123).

Maximum, 30 psig.

Connections: Barbed fittings for 1/4" O.D. polyethylene or

5/32" I.D. polyurethane tubing.

Air Consumption: None. Air Flow Capacity: 1152 scim. Adjustments: Knob. Mounting: Designed for use on MCS-S-P manifold socket.

These devices can also be mounted by using the appropriate mounting bracket (See Table 2 Mounting Bracket Accessories) or PKS-1133 kit.

Dimensions: See Figure 1.

ACCESSORIES PROVIDED WITH SK-5XX

PKG-1133 Plastic mounting strap & adhesive base

ACCESSORIES

K51X Mounting bracket (See Table 2) MCS-S-P Manifold Socket 50-XX Dial Plates (See Table 4)

S520, S530, S540 Series

SK-520, SK-530, SK-540 Series

Two-, Three-, & Four-Position

Selector Switches

General Instructions

S5XX/SK-5XX shown without dial plate

Table-1 Specifications.

Model

Number

S520

SK-520

S521

SK-521

S530

SK-530

S531

SK-531

S540

SK-540

S541

SK-541

For Dial Plate Specifications, see page 2.

Table-2 Mounting Bracket Accessories.

Model

Number

K511 Single switch bracket

K512 One switch & one gauge per bracket

K514 Two switches & two gauges per bracket

Table-3 Replacement Parts.

Model

Number

K550 Replacement Knob

K551 Replacement Locknut

Description

2-Position - 4 branch

2-Position - 5 branch

(unused ports blocked)

3-Position - 4 branch

(unused ports blocked)

3-Position - 4 branch

(unused ports exhausted)

4-Position - 5 branch

(unused ports blocked)

4-Position - 5 branch

(unused ports exhausted)

Description

Page 2

Table-4 Dial Plates for use with S520/SK-520 and S521/SK-521.

Model Number Dial Markings

50-06 Blank

50-09 Occup. Unoccup. — —

50-11 Min. Max. — —

50-13 Winter Summer — —

50-14 Manual Auto — —

50-15 Auto Off — —

50-16 On Auto — —

50-17 On Off — —

50-18 Closed Auto — —

50-19 Open Auto — —

50-20 Open Closed — —

50-23 Day Night — —

50-24 Heat Cool — —

50-52 1 2 — —

Table-5 Dial Plates for use with S530/SK-530 and S531/SK-531.

Model Number Dial Markings

50-06 Blank

50-32 1 2 3 —

50-37 Open Auto Closed —

50-38 Heat Auto Cool —

50-39 Day Auto Night —

50-45 Winter Auto Summer —

50-46 Occup. Auto Unoccup. —

50-47 On Auto Off —

Table-6 Dial Plates for use with S540/SK-540 and S541/SK-541.

Model Number Dial Markings

50-06 Blank

50-48 2 3 4 1

50-49 Heat Vent Cool Auto

Figure-1 Internal Port Connections.

Page 3

PRE-INSTALLATION

Inspection

Inspect the carton for damage. If damaged, notify the appropriate carrier immediately. Inspect the device for obvious damage due to shipping. Return damaged products.

Required Installation Items

• Piping diagrams

• Tools (not provided)

Appropriate screwdriver(s) for mounting screws

• Mounting screws (not provided)

• Appropriate accessories

INSTALLATION

Caution:

1. Installer must be a qualified, experienced technician.

2. Make all connections in accordance with the piping diagram.

3. Do not locate the device in areas subjected to excessive vibration or corrosive atmospheres.

4. Do not exceed ratings of the device.

Figure-2 Panel Cutout Dimensions.

Clean, Dry Oil Free Air Supplies for Pneumatic Systems

Caution:

coalescing filter will provide clean, dry, oil free air required (reference EN-123).

Compressor oil must be non-paraffin mineral base or naphtha base. Synthetic or paraffin base oils will destroy pneumatic controls and void the warranty.

A refrigerated air dryer, particulate filter and a

MOUNTING INSTRUCTIONS

Panel Mounting

Inside, These devices have been designed to be mounted on a MCS-S-P manifold socket which is mounted to the appropriate manifold backplate.

Surface, These devices may also be mounted on a panel face (1/2" maximum panel thickness) by using a 1-1/64" mounting hole, see Figure 2.

Field Mounting

These devices may also be mounted without the backplate, socket and gasket by using the appropriate mounting bracket as shown in Table 2 or PKG-1133 kit that includes plastic mounting strap and adhesive mounting base.

Figure-3 Mounting Dimensions.

DIAL PLATE INSTALLATION

With the knob removed and the locknut run back for clearance, turn the dial plate to fit over the projections on the front of the switch body. Align and engage the vertical notch in the dial plate with the tab behind the top switch body projection. Tighten the locknut against the back of the dial and replace knob, see Figure 5.

MAINTENANCE

Regular maintenance of the total system is needed to assure sustained optimum performance.

REPAIR

No Field repair is possible. Replace selector switch with a functioning unit.

Page 4

Figure-4 K511, K512 & K514 Mounting Dimensions.

Figure-5 Dial Plate Installation.

F-23916-3

Figure-6 Automatic or Manual Changeover of Day/Night System.