Subracks - Siemens SIMADYN D Hardware Manual

Aotewell Ltd

1.1.17 Subracks

Hardware - SIMADYN D
Edition 08.2005
HongKong|UK|China
www.aotewell.com
Power supply potentials
For SIMADYN D, the grounds of all secondary voltages must be
connected together and connected to the subrack housing and grounded;
this enhances the discharge of noise signals and voltages.
230/115 V AC
24 V DC
PE
Using clocked power supplies
If a clocked power supply is used for the 24V supply, the rated output of
the clocked power supply units must be designed for the inrush current of
SIMADYN D (the factor is 200 % of the rated current). Otherwise, the
clocked power supply can ramp-up along the short-circuit current limiting
and undefined conditions can occur.
• The subracks must be connected to the grounding/potential bonding
rail using the shortest possible 6mm 2 cable.
• All of the boards must be screwed into subracks. This is also required
during the commissioning phase!
• Empty slots must be provided with SIMADYN D slot covers.
• If modules are inserted in an adapter during the commissioning
phase, the front panel must be electrically connected to the housing
through the shortest possible path.
• Modules may neither be removed nor inserted under voltage.
• The connectors for serial interfaces must be screwed to the front
panel.
• The maximum temperature of the air drawn-in by the subrack is 55ºC.
The subrack must be mounted so that air can freely circulate. It must
be ensured that heat cannot build-up (no hotspots).
• The air drawn-in by the subrack must be as dust-free as possible.
sales@aotewell.com
Industry Automation
General technical data
Housing
+ 5 V
+ 15 V
- 15 V
Ground
1-13
+86-755-8660-6182
1