Technical data

SED2 Operation & Maintenance Manual
10 Siemens Building Technologies, Inc.
Chapter 4 – Electrical Installation
DANGER:
• To ensure safe operation of the equipment, authorized persons must install and
commission it in full compliance with the warnings, cautions, and notes in this
manual. Authorized persons must also follow general and regional installation
and safety regulations regarding work on sites with hazardous voltages
(EN 50178) and relevant regulations for the correct use of tools and personal
protective equipment.
• The SED2 must be grounded (per IEC 536, Class 1, NEC and other relevant
industry standards). Extremely hazardous conditi
ons can occur if the SED2 is not
correctly grounded.
• The SED2 is suitable for use in a circuit capable of delivering not more than
10,000 symmetrical amperes (ms), for a maximum voltage of 240/480/575V
when protected by a time delay Type J, H, or K fuse.
• Only hard-wired mains connections are permissible. Use Class 1 60/75° copper
wire only.
• The cross-section of the ground-
bonding conductor must be at least equal to that
of the power cables.
• The following terminals can carry hazardous voltages even when the SED2 drive
is not running:
− Mains power terminals: L/L1, N/L2, L3
− Motor terminals: U, V, W
− Link terminals: DC-, DC+/B+, DC/R+, B-
• The DC link capacitors of all SED2 drives remain charged with dangerous
voltages for 5 minutes after all supplies have been disconnected. Therefore,
after disconnecting the SED2 from the power source, always wait 5 minutes
before carrying out any work.
• The SED2 is capable of providing internal motor overload protection in
accordance with UL508C, Section 42. Accurately configure motor parameters for
motor overload protection to operate correctly. See Motor l2t Temperature
Reaction parameter P0610; I2T is on by default. Motor overload protection also
can be provided using an external PTC temperature sensor (disabled by default
via Motor Temperature Sensor parameter P0601).