Niko 550-00001, Руководство по установке

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20. Digital potential-free sensor module
Follow the steps below to install the module:
1 Press the module onto the DIN rail until it clicks into place. Preferably position the module in the top row inside the
electrical cabinet to keep the SELV cables separate from the 230 V cables.
2 Connect the sensors to one of the screw terminals 1- 3 using the N.O. contact or the NPN transistor output.
3 Connect the mass of the sensors to the common screw terminal COM.
4 Connect the digital potential-free sensor module to the module before it. Slide the sliding contact of this module to
the right until it clicks into the digital potential-free sensor module. This will ensure that the bus and the power
supply voltage are connected.
Error codes
When the module is functioning properly, the STATUS LED will light up in TEST mode only. If one or several errors occur,
the LED will blink to indicate the error code of the error with the highest priority. The table below provides an overview of
all error codes.
Technical data
• suitable for SELV sensors with an N.O. contact or an NPN transistor output
• 4 screw terminals
• dimensions: DIN 2U
• sliding contact
• ambient temperature: 0 - 45°C
• CE marking
• Ensure that the installation is disconnected from the mains.
• The distance between the sensors and the module should not exceed 50 m.
• A maximum of three sensors can be connected per module.
• Always use sensors that are suitable for applications with a safety extra-low voltage (SELV).
• If the sensor uses an SELV (24 Vdc) power supply, then it is always suitable.
• If the sensor uses a 230 Vac power supply, then it must have a galvanically isolated output (SELV), or an
intermediate relay must be used.
LED ACTION ERROR POSSIBLE SOLUTIONS
STATUS LED Blinks – one pulse per two
seconds. Software error Wrong software version.*
*Download the latest software version
from the Niko website to upgrade the
module.