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Current-Relay STW12

Manufacturer:

Ziehl

Manufacturer part number:

S225127
Delivery date: 12 business days

Current Relay for AC-Detection, 12-channel, 12 open collector outputs, Single evaluation and OR-Circuit, open printed circuit board

218.4 CAD
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Quantity
10+
20+
Price
197.4 CAD
175 CAD
+ -
Products specifications
Brand ZIEHL
Country of origin Germany
Rated supply voltage DC 20 - 30 V, < 2 VA
Ambient temperature range -20...+55 °C
Overload capacity 100 A / 300 A
Switching point adjustable, AC 0,5...5 A
Protection housing IP 30
Protection terminals IP 20
Applied standards UL/CSA

The current relay STW12 monitors the current flow yes/no of up to 12 alternating-current circuits. If there is an AC-current of ≥1 A through a connected transformer STWA 1, the according output transistor switches and the yellow LED lights up. 

All the OR inputs are linked at the same time. If a current is identified in at least one of the monitored current circuits, a relay (1 changeover contact) picks up. 

The STW12 is installed at an open printed circuit board. The lower part can be used for snapfastening on a 35 mm DIN-rail or for screw fastening (option). The supply voltage is DC 24. This voltage can be used at the same time for inquiry of the output transistors. When requesting the outputs in 2 groups in multiplex operation, only 8 I/Os of the PLC are needed.

  • 12 inputs (for transformer STWA1)
  • 2 of these inputs with adjustable switching threshold AC 0,5...5 AA
  • 12 outputs (Open Collector) max. DC 40 V/40 mA
  • relay OR-linked (of all 12 inputs)
  • LED displays (1/channel)
  • Multiplex operation possible

Applications
The current relay STW12 is used where AC-current yes/no has to be evaluated, however, the exact value of the current is not relevant. Examples are the control of machines in suction plants or monitoring of the mode of operation of loads (on, off or damaged). The STW12 is suitable in particular for being used in connection with a PLC.

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Description

The current relay STW12 monitors the current flow yes/no of up to 12 alternating-current circuits. If there is an AC-current of ≥1 A through a connected transformer STWA 1, the according output transistor switches and the yellow LED lights up. 

All the OR inputs are linked at the same time. If a current is identified in at least one of the monitored current circuits, a relay (1 changeover contact) picks up. 

The STW12 is installed at an open printed circuit board. The lower part can be used for snapfastening on a 35 mm DIN-rail or for screw fastening (option). The supply voltage is DC 24. This voltage can be used at the same time for inquiry of the output transistors. When requesting the outputs in 2 groups in multiplex operation, only 8 I/Os of the PLC are needed.

  • 12 inputs (for transformer STWA1)
  • 2 of these inputs with adjustable switching threshold AC 0,5...5 AA
  • 12 outputs (Open Collector) max. DC 40 V/40 mA
  • relay OR-linked (of all 12 inputs)
  • LED displays (1/channel)
  • Multiplex operation possible

Applications
The current relay STW12 is used where AC-current yes/no has to be evaluated, however, the exact value of the current is not relevant. Examples are the control of machines in suction plants or monitoring of the mode of operation of loads (on, off or damaged). The STW12 is suitable in particular for being used in connection with a PLC.

Products specifications
Brand ZIEHL
Country of origin Germany
Rated supply voltage DC 20 - 30 V, < 2 VA
Ambient temperature range -20...+55 °C
Overload capacity 100 A / 300 A
Switching point adjustable, AC 0,5...5 A
Protection housing IP 30
Protection terminals IP 20
Applied standards UL/CSA
Product tags