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SED2 Drive Applications. Simple Applications. INPUTS. OUTPUTS. 0-10 V. Relay 1 -> Fault. On. Fault Reset. Relay 2 -> Run. ACTION. Standard I/O. 0-10 V 2-10 V 0-20 mA 4-20 mA Programmable functions. 0-10 V 2-10 V 0-20 mA 4-20 mA Ni 1000. SED2. 2 x analog inputs.

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SED2 Drive Applications


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simple applications
Simple Applications

INPUTS

OUTPUTS

0-10 V

Relay 1-> Fault

On

FaultReset

Relay 2-> Run

ACTION

standard i o
Standard I/O

0-10 V

2-10 V

0-20 mA

4-20 mA

Programmablefunctions

0-10 V

2-10 V

0-20 mA

4-20 mA

Ni 1000

SED2

2 x analog inputs

2 x analog outputs

Insulated

Programmablefunctions

PNP or NPN (sink/source)

Form C contacts

Programmablefunctions

30VDC, 5A

240VAC, 2A

6 x digital inputs

2 x digital outputs

P1

N2

USS

LonWorks (opt.)

Modbus (opt.)

RS-485

1 x motor PTC

application air temperature control cooling

100 %

0 %

SP=25°C

T

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

Digital Input

Digital Input

Analog Input

solution pid controller direct sensor connection
Solution: PID Controller Direct Sensor Connection

Ni 1000 Temperature Sensor

Drive Based PID w/ Hibernation Mode

Ni 1000Sensor

ni 1000 i o
Ni 1000 I/O

SED2

Ni 1000

Analog input

1 Safety Input

Digital input

application water pressure control

P1

P2

P3

P1

100 %

P3

P1

P2

P1

0 %

P

SP=2.5 bar

Application - Water Pressure Control
  • Function Description
  • Constant pressure (P)
  • Pump Logic Controller
  • (B&G Buster package)
  • P1, P2 and P3 on-off with motor
  • starters
solution built in pump cascading

100%

1.

2.

3.

P

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

pump staging i o
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

application temp control belt monitoring

100 %

0 %

SP=25°C

T

Application – Temp. Control + Belt Monitoring
  • Function Description
  • Exhaust fan –
  • Air flow monitoring (External, only alarm)
  • -Room temperature control, cooling
  • Sensor Ni 1000
  • -Set point +25°C
  • -Thermostat for switch on/off
  • Belt monitoring
solution v belt monitoring

Torque

Speed

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.

application temp control duct pressure control

100 %

0 %

SP=2.5

IWG

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
solution duct pressure control

Pressure

Speed Reduction

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.
static pressure control i o
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

bundled package
Bundled Package

The SED2 is equipped with TEC application 2722

Which includes 99 subpoints

for monitoring and control

(See Attached Document for TEC Schedule)

control terminals

Digital Inputs

Terminals

Parameter

Default

1

5

P0701=1

ON right

2

6

P0702=12

Reverse

3

7

P07a03=9

Fault Acknowledge 

4

8

P0704=15

Fixed Frequency

5

16

P0705=15

Fixed Frequency

6

17

P0706=15

Fixed Frequency

Digital Outputs

Terminals

Parameter

Default Operation

1

18,19,20

P0731

Drive fault

2

23,24,25

P0732

Drive running

Analog Inputs *

Terminals

Parameter

Default Operation

1

3,4

P0756(0)

0-10V dc

2

10,11

P0756(1)

0-10V dc

Analog Outputs

Terminals

Parameter

Default Operation

1

12,13

P0771(0)

Frequency

2

26,27

P0771(1)

Frequency

Control Terminals

* Can also be configured as NI1000 inputs.

mounting installation considerations
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?

enclosure ratings drive drive w bypass
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
mounting installation considerations20
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
mounting installation considerations21
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
mounting installation considerations22
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
slide23

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