SED2 Drive Applications

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SED2 Drive Applications
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Simple Applications
INPUTS
OUTPUTS
0-10 V
Relay 1-gt Fault
On
FaultReset
Relay 2-gt Run
ACTION
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Standard I/O
0-10 V 2-10 V 0-20 mA 4-20 mA Programmablefuncti
ons
0-10 V 2-10 V 0-20 mA 4-20 mA Ni 1000
SED2
2 x analog outputs
2 x analog inputs
Insulated Programmablefunctions PNP or NPN
(sink/source)
Form C contacts Programmablefunctions 30VDC,
5A 240VAC, 2A
2 x digital outputs
6 x digital inputs
P1 N2 USS LonWorks (opt.) Modbus (opt.)
RS-485
1 x motor PTC
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Application - Air Temperature Control, Cooling

• Function Description
• Exhaust fan
• Air flow monitoring (External, only alarm)
• -Room temperature control, cooling
• Sensor Ni 1000
• -Set point 25C
• -Thermostat for switch on/off

Digital Input
Digital Input
Analog Input
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Solution PID Controller Direct Sensor Connection

• Ni 1000 Temperature Sensor
• Drive Based PID w/ Hibernation Mode

Ni 1000Sensor
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Ni 1000 I/O
SED2
Ni 1000
Analog input
1 Safety Input
Digital input
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Application - Water Pressure Control

• Function Description
• Constant pressure (P)
• Pump Logic Controller
• (BG Buster package)
• P1, P2 and P3 on-off with motor
• starters

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Solution Built-In Pump Cascading

• This function allows for control of up to two
  additional, cascaded pumps. With the two relay
  output contacts, the SED2 performs the cascading
  logic without additional controllers or I/O
  cards.
• -No separate controller required
• -Energy savings with SED2

Pressure demand
Cascade
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Pump Staging I/O
SED2
0-10 volt Pressure Transmitter
2 x analog input
1 On Command 1 safety input
2nd stage pump 3rd stage pump
6 x digital input
2 x digital output
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Application Temp. Control Belt Monitoring

• Function Description
• Exhaust fan
• Air flow monitoring (External, only alarm)
• -Room temperature control, cooling
• Sensor Ni 1000
• -Set point 25C
• -Thermostat for switch on/off
• Belt monitoring

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Solution V-Belt Monitoring

• The SED2 ensures reliable V-belt monitoring
  without the expense of an external sensor. Both
  speed and torque are compared to a user-defined
  tolerance band. If the parameters do not match,
  the drive trips in the event of V-belt failure.
• Also, the SED2 is able to monitor a pulse
  sequence from the sensor detecting rotation of
  the fan shaft.

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Application Temp. Control Duct Pressure
Control

• Function Description
• Exhaust fan Like air temperature control
  example
• -Air flow monitoring (External, only alarm)
• -Static pressure control
• 0-10v, 1-4inch wg
• -Set point 2.5 inch
• -Thermostat for switch on/off

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Solution Duct Pressure Control

• 0 10 Volt standard output signal
• 1 Accuracy over full scale
• Available in uni-directional ½, 1, 2 and 5
  wc
• Available in bi-directional ¼ wc.

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Static Pressure Control I/O
SED2
0-10 volt Pressure transmitter
2 x analog input
1 On Command 1 Safety Static Pressure Switch
6 x digital input
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Bundled Package
The SED2 is equipped with TEC application
2722 Which includes 99 subpoints for monitoring
and control (See Attached Document for TEC
Schedule)
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Control Board
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Control Terminals
Can also be configured as NI1000 inputs.
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Mounting Installation Considerations

• Type of environment
• - What is the location like? Does it fall
  within the drives operating ranges for
  altitude temperature
• Type of power
• - Line and load reactors reduce voltage. If
  voltage is already low, using them could have
  an effect on performance.
• - Does the power system supply at least 1
  impedance?
• Type of motor
• - Is it VFD rated?
• - Distance from the drive?
• - HP of the motors?
• - Age of the motor?

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Enclosure Ratings - Drive Drive W/Bypass

• IP 20
• No NEMA equivalent, needs to be mounted in
  another enclosure
• Generally used in US for OEM applications
• Our standard unit as it comes from the factory
• IP 21
• NEMA 1, protects operator from electrical hazard
  and protects the equipment from falling material
• Our standard unit when fitted with gland plate
  and dust cover
• IP 54
• No direct US equivalent, but exceeds NEMA 12
• NEMA 3R
• Water tight, limited need in drive applications

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Mounting Installation Considerations

• Line Reactor Installation
• Not recommended to reduce Harmonics
• Can be ordered with or without an enclosure
• Installed to protect the drive from
• Power spikes or sags caused from transfer to
  generator
• Poor heavy switch load on the same load center

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Mounting Installation Considerations

• Load Reactor Installation
• Long wire leads from drive to motor
• As wire length from drive to motor increases, the
  voltage spike increases
• Can be ordered with or without an enclosure
• Installed to protect the motor from
• Spikes caused from the drive switching
  frequencies or IGBT

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Mounting Installation Considerations

• Line and Load Reactor Installation
• Always use Siemens Building Technologies
  specified reactor
• For retro-fit applications
• REMOVE AND REPLACE EXISTING REACTORS WITH SBT
  SPECIFIED REACTORS

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Siemens SED2 VFD Advantages

• Low harmonics design
• Small enclosure size
• Many standard features
• Reduces operating cost
• Low power losses/high efficiency
• Minimal effect on customer power
• Wide power range from ½ to 125 HP