104 ZIEHL industrie-elektronik, 74523 Schwäbisch Hall, Germany, +49 791 504-0, info@ziehl.de, www.ziehl.de

Current Relays adjustable Type STW

Current-Relay for Obstacle Lights

AC 12 - 120 mA for LED-Lamps, 0,1...1 A for light bulbs

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Technical Data

Application:

Monitoring of LED-Lamps or light-bulbs in twin obsta-

cle lights with alarm (lamp failure) and switching on a

reserve lamp.

Monitoring of the function of single obstacle lights.

At conventional solutions with a change-over contact,

there is a short on-pulse at the reserve lamp everytime

when the system is switched on. The STW200 switches

it on only in case of a failure of the main lamp.

LED-lamps can also be monitored with long cables

between relay and lamp.

When monitoring LED-lamps a total failure is detected.

Failures of single LEDs are not detected.

Current-relays STW200 monitor

AC-currents for falling below an

adjusted limit. The ranges 12 ...

120 mA and 0,1 ... 1 A allow the

monitoring of LED-Lamps as

well as incandescent lamps in

obstruction lights.

Incaseofmainlampfailurearelay

switches on the reserve lamp.

An alarm contact is available for

signaling a lamp failure.

If an alarm is required in case of

failure of reserve lamp, a second

STW200 is used.

Measuring input 12...120 mA

for LED-lamps

Measuring input 0,1...1 A for

incandescent lamps (bulbs)

withstands current-peaks

when switching on lamp

Adjustment range 10...100

%

Relay for switching on reserve light in operating-

current mode

Relay for alarm in closed-current mode

Cable-length from relay to lamp up to 500 m

Display green = o.k., red = low current alarm

Housing 70 mm wide, mounting height 55 mm

Tolerance

Relay output

Type of contact

Measuring ranges

Tolerance / repeating error

Hysteresis

Delay alarm

rated ambient temp. range

Dimensions H x B x T

Line connection

Attachment

Protection housing/terminals

Weight

AC 230 V 50/60 Hz, < 3 VA

0,85 ... 1,1 Us

2 x 1 change-over contact

type 2 see "General Technical Informations"

AC 12...120 mA / AC 0,1...1 A

±15 % / <1 %

app. 5%

app. 2 s

-40°C...+55°C

V 4: 90 x 70 x 58 mm, mounting height 55 mm

35 mm DIN-rail or 2 screws M4 (option)

IP 30/ IP 20

app. 210 g

STW200

Part number:

S225530

AC 230 V