Application Planning; Secondary Electrical Conditions; Power Supply - Siemens SINUMERIK 840D sl Manual
Hide thumbs
Also See for SINUMERIK 840D sl:
- Function manual (2184 pages) ,
- Programming manual (1334 pages) ,
- Commissioning manual (1102 pages)
Table of Contents
Advertisement
1.2
Application planning
1.2.1
Secondary electrical conditions
1.2.1.1
Power supply
Requirements for DC power supplies
Danger of death caused by unsafe power supply
The DC power supply must be implemented as a circuit of Category PELV/DVC A according
to EN 61800-5-1.
Inadequately fused supply cables can be life-threatening
In the case of supply lines > 10 m, protectors must be installed at the device input in order to
protect against lightning (surge).
The DC power supply must be connected to the ground/shield of the NC for EMC and/or
functional reasons. For EMC reasons, this connection should only be made at one point. As
a rule, the connection is provided as standard in the S7-300 I/Os. In exceptional
circumstances when this is not the case, the ground connection should be made on the
grounding rail of the NC cabinet (also refer to /EMC/EMC Installation Guide.)
Table 1-1
Rated voltage
Non-periodic overvoltages
Transient voltage interruptions
Operator panel front: OP 012
Manual, 09/2016, A5E36371591B
DANGER
WARNING
Requirements of the DC power supply
According to EN 61131-2
Voltage range (mean value)
Voltage ripple, peak/peak
Powering up time when switched
on
Period of overvoltage
Recover time
Events per hour
Downtime
Recovery time
Events per hour
General information and networking
1.2 Application planning
24 VDC
20.4 VDC to 28.8 VDC
5% (unsmoothed 6-pulse recti‐
fication)
any
≤ 35 V
≤ 500 ms
≥ 50 s
≤ 10
≤ 3 ms
≥ 10 s
≤ 10
11
- Quick Links:
- Table of Contents
- Networking
Hide quick links:
Advertisement
Table of Contents
