Omron NT600S Manual - Northern Industrial

Installation Section 2-22-2-2 Power Supply ConnectionConnect a 24 VDC power supply to the power input terminals.NoteUse 2 mm 2 or thicker wires to prevent voltage drop. Twist the wires together forwiring.S Make sure you connect the power supply wires with the correct polarity.S Do not connect AC power to the DC terminals.S If the power supply voltage does not conform to the stipulated rating, it coulddestroy the terminal or burn internal circuits.S If complying with EC directives (low voltage directives), observe the followingpoints:(1) Use a power supply with reinforced insulation to supply power to the PT.(2) If using the EL display type, embed the rear part of the PT in a control panelso that, after the product has been made ready for installation, the usercannot touch any part of it apart from the part where PT operations areperformed (the front panel).24 VDC+Breaker24 VDC Power SupplyReferenceWhen using an C200H direct communication the NT600S must be started up beforethe host. For details, refer to “Switching the Power ON/OFF When UsingC200H Direct” (page 62). When not using C200H direct communication, there areno restrictions on the order in which power supplies are switched ON and OFF.CautionS Noise preventionThe NT600S has a noise preventive feature against the power supply line noise.To further reduce noise, connect a noise filter to the power line. This will drasticallyreduce the ground noise.S Power supplyIn order to comply with EC directives, use a SELV power supply.Applicable power supply specifications are as follows.ItemPower supply voltageAllowable power supplyvoltage fluctuation range24 VDC20.4 VDC to 26.4 VDC(24 VDC –15%, +10%)ValuePower supply capacity ST121(B)-EVj 15W over ST211(B)-EVj 25W overS Parts used for connectionFor the connection to the power supply terminal block, twisted wires of 2 mm 2 orgreater cross sectional area and M 3.5 size crimp terminals must be used.Use crimp terminals to connect the power supply to the power input terminals.Recommended crimp terminals for M3.5 are given below.Tighten the screws on the terminal block to a torque of 0.8 N·m.28ηττπ://νιχοντρολσ.χοm