STW12V
12470-0710-00
Page
3 / 8
www.ziehl.de
1 General Notes
Compliance with the following instructions is mandatory to ensure the functionality and safety of the
product. If the following instructions given especially but not limited for general safety, transport,
storage, mounting, operating conditions, commissioning and disposal / recycling are not observed,
the product may not operate safely and may cause a hazard to the life and limb of users and third
parties.
Deviations from the following requirements may therefore lead both to the loss of the statutory
material defect liability rights and to the liability of the buyer for the product that has become unsafe
due to the deviation from the specifications.
2 Application and brief description
ZIEHL current relays in the OR circuit are particularly suitable for applications where dusts, fumes, vapours or
gases are generated at various electrical consumers, which must be removed by a central extraction system.
An integrated shutdown delay controls the operation of the extraction system after working hours.
Automatic actuation with 12 inputs with adjustable response threshold.
Current is detected using current transducers type STWA1(H), current sensors S1 (also DC) or potential free
contacts.
If current is detected on at least one input, the current sensor turns on or a contact closes, the built-in relay
turns on. If the current is turned off in all monitored circuits or if it falls below the set response threshold (for
detection with STWA1(H)), the output relay disconnects with the set delay.
An adjustable response threshold allows the user to allow smaller currents without triggering switching
operations. For example, the device can be turned on to make adjustments in an electronic circuit (small
current through a current transducer). However, the extraction will not start until the main motor is turned on
(high current).
The adjustable shutdown delay makes it easy to set the delay time value.
3 Functional overview
monitoring up to 12 current circuits in an OR circuit
inputs for current transducer STWA1(H), current sensor S1 and potential free contacts
switching point adjustable 0.5 - 5 A (only for connection to the converter)
adjustable switch-off delay 1 - 60 s
plug-in connection terminals
low-voltage AC/DC adapter 24-240 V
distributor housing
4
Display and controls
1)
Response threshold adjustment
knob for transmitter connection
with integrated yellow LED:
LED is on
relay on
LED flashes
relay on
delay time active
LED is off
relay off
2)
Delay time adjustment knob
