Specifications

Commissioning
Siemens Building Technologies, Inc. 55
Commissioning
WARNING:
• Only authorized personnel trained in the setup, installation,
commissioning, and operation of the SED2 may work on the
product and mechanical system.
• SED2s operate at high voltages. In some components,
operation of electrical equipment involves using dangerous
voltages.
• In cases where faults in the control equipment could cause
significant equipment damage or severe physical injury (such
as potentially dangerous short circuits), use external
precautions to ensure and to enforce safe operation (such as
independent limit switches and mechanical interlocks).
• Emergency stop facilities must remain functional in all operating
modes of the control equipment. Resetting the emergency stop
facility must not result in an uncontrolled or undefined restart.
Do not use the SED2 as an emergency stop mechanism.
• The equipment incorporates internal motor overload protection
in accordance with UL508C, Section 42. See Motor I
2
t
Temperature Reaction parameter (P0610); I
2
t is ON by default.
(Motor overload protection can also be provided with an
external PTC temperature-thermistor sensor disabled by default
via Motor Temperature Sensor parameter (P0601). See the
Motor Overload Protection section in this manual for details.)
For reliable motor overload protection, the motor parameters
must be configured accurately.
• Certain parameter settings can cause the SED2 to start
automatically or to restart automatically after a fault or an input
power failure (provided the fault is eliminated or acknowledged
or the supply voltage is restored).