QR Systems MK-2 switching module
Line supervision module for dry contacts of control cabinets: open and short-circuit supervision, 30 V DC, 0 addresses, 20×10×4 mm.
Specifications
- Type
- switching module, dry-contact line supervision for open and short circuit
- Application
- with the QR Systems control panel and KS-02-250 controller
- Operating voltage
- 30 V DC maximum
- Current under short circuit
- 7.5 mA
- Address slots
- 0
- Wire cross-section
- 0.35 mm²
- Operating temperature
- −25…+55 °C
- Protection rating
- IP30
- Dimensions
- 20×10×4 mm (without wires)
- Weight
- up to 3 g
Description
The QR Systems MK-2 switching module supervises the line from the dry contacts of control cabinets and other process equipment connected to the outputs of the addressable control panel and the KS-02-250 system controller. The module's purpose is to supervise the circuit for open and short circuit, so the panel receives a reliable state of the line up to the equipment contact. The ultra-compact 20×10×4 mm body, excluding wires, fits in confined spaces, right at the cabinet terminals. The module takes no address slots, so the panel capacity stays available for detectors. Connection is by wire leads of 0.35 mm² cross-section according to the passport diagram: panel output and the equipment dry contact.
Advantages
- Open and short-circuit supervision — a line fault up to the dry contact is visible on the panel
- Current consumption under short circuit 7.5 mA — low load on the panel output
- 20×10×4 mm and up to 3 g — installation in confined spaces at the equipment terminals
- 0 address slots — saves the panel's address capacity
- Temperature range −25…+55 °C — operation in unheated rooms
- Protection rating IP30 — for installation inside a cabinet or junction box
Applications
- Supervising lines from the dry contacts of building equipment control cabinets
- Connecting process equipment to a QR Systems addressable system
- Monitoring the state of actuators on the outputs of the KS-02-250 controller
- Sites with unheated areas: warehouses, car parks, technical rooms
Frequently asked questions
How does the MK-2 differ from the MK-1?
What exactly does the module supervise?
Does the module occupy an address and how is it connected?
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