Operating Instructions

SED2 VFD Operation & Maintenance Manual
24 Siemens Building Technologies, Inc.
DIP Switch Settings
Motor Frequency & Units of Measurement Switches
In all versions of the SED2, the DIP switches for selecting the motor frequency and North
American or European units of measurement are located on the control board under the I/O
module. (See Chapter 4, Access to Connection Terminals for I/O module and control board
locations.) The I/O module, located under the operator panel, connects to the operator panel
either directly (frame sizes A through C/IP20) or via a cable (frame sizes D through E and all
IP54 models).
DIP Switch Position Function
ON North American operation (60 Hz, hp). 2
OFF European operation (50 Hz, kW), factory default.
1 OFF Not for customer use.
NOTE: This switch must be in the OFF position for
correct SED2 operation.
Analog Input Switches
For all versions of the SED2, the DIP switches used to configure the analog inputs are
located on the I/O module. (See Chapter 4, Access to Connection Terminals for I/O module
locations.) The I/O module, located under the operator panel, connects to the operator panel
either directly (frame sizes A through C/IP20) or via a cable (frame sizes D through E and all
IP54 models).
DIP Switch Position Function
1 OFF Analog Input 1, voltage, 0-10 Vdc, factory default.
1 ON Analog Input 1, current, 0-20 mA.
2 OFF Analog Input 2, voltage, 0-10 Vdc, factory default.
2 ON Analog Input 2, current, 0-20 mA.