Introduction; General; Types Of System Control; Mechanical Installation - Siemens sed2 Commissioning Manual

2

Introduction

2.1 General

These are the Operating Instructions for the SED2 and are to be used for quick and simple commissioning. For
more details and the complete parameter list for specific applications, consult the relevant Reference Manual.
The SED2 range comprises VSDs for controlling the speed of fans and pump motors. The SED2 can also be pro-
grammed to manage many other motor functions and limits. These functions are set by parameters, which are
programmed using the operator panel.

2.1.1 Types of system control

The SED2 range of VSDs are normally controlled using the operator panel or input / output terminals. However,
there is an option for remote operation using serial communication. See the SED2 Reference Manual for further
details.
The output frequency and hence the motor speed can be controlled by digital or analog inputs. The digital inputs
can be programmed to control the motor speed by means of:
• Fixed frequency setpoints, using the
• Fixed frequencies, via binary inputs
• Motorized potentiometer function
The analog inputs can be programmed for voltage or current input using DIP selector switches. Process control,
using a standard proportional-integral-differential (PID) control loop function can be selected. This control is set up
using parameters and DIP selector switches for the analog inputs.
3

Mechanical installation

3.1 Mounting

3.1.1 Protection class IP20

The IP20 range of SED2 units can be mounted side by side without space in between. Keep the following minimal
clearance above and below the VSD for the movement of cooling air:
SED2
6/80
Siemens Building Technologies
HVAC Products
V
min.
SIEMENS SIEMENS
SED2
V
min.
Commissioning Guide
2 Introduction
buttons on the operator panel in hand mode
Frame size
A, B, C
D, E
Min. vertical clearance V
in mm
100
300
F 350
min.
CM1G5192en
26.02.2003