- 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.
- 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
Thông số kỹ thuật
- Power supply Us.......DC 20 - 30 V, < 2 VA
- Function.......12-channel single/OR
- Transformer input.......1…12, type STWA 1
- Overload cap.continous/max 10s.......100 A / 300 A
- Switching points E1, E2.......adjustable, AC 0,5...5 A
- Tolerance.......± 20%
- Switching points E3...E12.......on ≤ AC 1 A; off ≥ AC 0,3 A
- Switch-off delay.......10 sec.
- Switch-on delay.......approx. 0,5 sec.
- Output relay.......1 CO, 12 x Open-Collector
- Type of contact.......type 2 see general technical informations
- Open Collector.......max. DC 40 V/40 mA
- Testing conditions.......see general technical informations
- rated ambient temperature range.......-20°C…+55°C
- Dimensions H x B x T.......design V 6: 90 x 105 x 32 [mm], 37-pole
- Attachment.......on 35 mm DIN rail according to DIN EN 50 022 or with screws M4 (option)
- Protection housing / terminals.......IP 30 / IP 20
- Weight.......approx. 135 g