Siemens SINUMERIK ONE NCU 1740 - Standards and Approvals

Max. switch-on (inrush) cur‐
rent
6 A
Power consumption, max. 315 W
Power loss, typ. 16 W
Dimensions W x H x D
4)
50 x 300 x 270 mm
Weight (without packaging) 2.4 kg
Bu󹪜er time of the real time
clock
4-6 weeks (after this time has elapsed, it may be necessary to set the
system time)
2) If power supply units with primary-side supplies up to 600 V AC (line-to-neutral voltage) are to be used,
the transient voltages on the primary side of the power supply unit must be limited to 4000 V.
3) Connect the device only to a 24 V DC power supply that is compliant with protective extra-low voltage
(PELV) requirements according to UL 61010.
4) With spacers.
2) Si une alimentation avec tension primaire jusqu'à 600 V CA (conducteur - point neutre) est mise en
œuvre, limiter les surtensions transitoires au primaire de l'alimentation à 4 000 V.
3) Raccorder l'appareil uniquement à une alimentation 24 V CC qui répond aux exigences de très basse
tension de protection (TBTP) selon UL 61010.
4) Avec entretoises.
11.2 Standards and approvals
CE approval
Figure 11-1 CE marking
The operator panels and the safety-relevant accessories satisfy the requirements and protection
objectives of the following EC directives. The operator panels and the safety-relevant accessories
comply with the harmonized European standards (EN), promulgated in the O󹪟cial Journals of
the European Community:
More information can be found in the Internet at the following link: SIOS (https://
support.industry.siemens.com/cs/document/59843164/)
China RoHs
The products comply with the China RoHs regulation.
More information can be found on the Internet at the following link: SIOS (https://
support.industry.siemens.com/cs/products?
dtp=Certi󹪝cate&ci=4736&mfn=ps&pnid=14575&lc=en-WW)
Technical data
11.2 Standards and approvals
NCU 1740
94 Equipment Manual, 10/2021, A5E51087503B AA