Operation, Cycling, Auxiliary switches – Honeywell S20230-F User Manual

Page 7: Spst switches (table 5), Spdt switches (fig. 11 )

Advertising
background image

MS4120F; MS4620F,S; MS8120F,S; S2024-F; S20230-F FAST-ACTING, TWO-POSITION ACTUATORS

7

63-2584—7

OPERATION

The actuators are designed for use in Smoke Control Systems.

If power fails, the actuator spring returns to the 0° position. The

actuator mounts flush with the damper box. The actuator drives

from 0° to 95° and spring returns back to 0°.

The actuators are operated by an spst two-position controller.

When using an spst two-position controller, the actuator drives

to the damper fully open position when controller contact

makes and spring returns to the damper fully closed position

when controller contact breaks. The actuator drops to holding

power level on detection of stall, independent of hub position.

Cycling

The actuator and the internal spring are designed so that no

special cycling during long-term holding is required. Honeywell

recommends following all local, state, and national codes for

periodic testing of the entire smoke control system. Refer to

National Fire Protection Association (NFPA) National Fire

Codes

®

: NFPA90A, NFPA92A, and NFPA92B for your

application.

Auxiliary Switches

Some models include auxiliary switches (see Table 1).

SPST Switches (Table 5)

See Fig. 6 through 8 for SPST auxiliary switch wiring.

Table 5. SPST Auxiliary Switch Operation.

NOTE: Both sets of contacts are open when the actuator is

between 7° and 85°.

SPDT Switches (Fig. 11)

See Fig. 9 through 11 for SPDT auxiliary switch wiring.

Fig. 11. SPDT auxiliary switch operation.

Switch

Wire

Color

Makes

Breaks

(degrees from fully closed position)

blue

less than 7

greater than 7

85°

yellow

greater than 85

less than 85

BLACK/BLUE

BLACK/RED

BLACK/YELLOW

BLACK/BLUE

BLACK/RED

BLACK/YELLOW

LESS 7°

MORE 7°

GRAY/BLUE

GRAY/RED

GRAY/YELLOW

GRAY/BLUE

GRAY/RED

GRAY/YELLOW

LESS 85°

MORE 85°

7° SWITCH

85° SWITCH

M20679B

Advertising
This manual is related to the following products: